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GM

GM – Geomorphology

DM11
Convener: Daniel Parsons
Thu, 07 May, 12:45–13:45 (CEST)

GM1 – General Geomorphology

GM1.1

In the past years, it has become apparent that human activities are increasingly affecting the surface of the Earth. Extreme meteorological events are becoming the new norm, and changes in the climatic drivers of Earth surface processes are pushing the study of geomorphology towards new frontiers. Since several millennia, human activities are causing large changes in ecosystems, land use, hydrological routing, and direct anthropogenic modification of the landscape by construction. These changes impact systems across the full spectrum of geomorphology. A key challenge in the coming years is to translate our understanding of geomorphic processes, which is often based on observations of past or current conditions, into the rapidly changing future.
This session will bring together a series of invited speakers to provide insights and perspectives in this topic from across the field of geomorphology.

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Convener: Kristen Cook | Co-conveners: Annegret LarsenECSECS, Giulia Sofia, Matteo Spagnolo, Andrea Zerboni
Displays
| Wed, 06 May, 10:45–12:30 (CEST)

GM2 – Geomorphologist's Tools, Models and Methods

GM2.1

Geomorphometry and geomorphological mapping are important tools used for understanding landscape processes and dynamics on Earth and other planetary bodies. Recent rapid growth of technology and advances in data collection methods has made available vast quantities of geospatial data for such morphometric analysis and mapping, with the geospatial data offering unprecedented spatio-temporal range, density, and resolution. This explosion in the availability of geospatial data opens up considerable possibilities for morphometric analysis and mapping (e.g. for recognising new landforms and processes), but it also presents new challenges in terms of data processing and analysis.

This inter-disciplinary session on geomorphometry and landform mapping aims to bridge the gap between process-focused research fields and the technical domain where geospatial products and analytical methods are developed. The increasing availability of a wide range of geospatial datasets requires the continued development of new tools and analytical approaches as well as landform/landscape classifications. However, a potential lack of communication across disciplines results in efforts to be mainly focused on problems within individual fields. We aim to foster collaboration and the sharing of ideas across subject-boundaries, between technique developers and users, enabling us as a community to fully exploit the wealth of geospatial data that is now available.

We welcome perspectives on geomorphometry and landform mapping from ANY discipline (e.g. geomorphology, planetary science, natural hazard assessment, computer science, remote sensing). This session aims to showcase both technical and applied studies, and we welcome contributions that present (a) new techniques for collecting or deriving geospatial data products, (b) novel tools for analysing geospatial data and extracting innovative geomorphometric variables, (c) mapping and/or morphometric analysis of specific landforms as well as whole landscapes, and (d) mapping and/or morphometric analysis of newly available geospatial datasets. Contributions that demonstrate multi-method or inter-disciplinary approaches are particularly encouraged. We also actively encourage contributors to present tools/methods that are “in development”.

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Co-organized by ESSI2/NH3/PS4
Convener: Giulia Sofia | Co-conveners: Benjamin ChandlerECSECS, Frances E. G. ButcherECSECS, Susan Conway, Marek Ewertowski, Stuart GrieveECSECS, John K. HillierECSECS, Aleksandra Tomczyk
Displays
| Mon, 04 May, 14:00–15:45 (CEST)
GM2.5

Geochronological frameworks are essential for the study of landscape evolution. Over the last decades, geochronological techniques such as cosmogenic nuclides, thermochronology, radiocarbon and luminescence dating have improved in accuracy, precision, and temporal range. Recently, the development of new approaches, new isotopic/mineral systems and the opportunity to combine these techniques are expanding their range of applications. This session explores these advances and novel applications. These include studies of erosional rates and processes, sediment provenance, burial and transport times, bedrock exposure or cooling histories, landscape dynamics, and the examination of potential biases and discordances in geochronological data. We appreciate contributions that use dating tools which are established or in development, particularly those that quantify geomorphological processes with novel approaches and/or generic implications. We encourage studies that combine different techniques (e.g., CRN, luminescence, thermochronology, etc.) or data sets (e.g., field, remote sensing, numerical modelling), and/or highlight the latest developments and open questions in the application of geochronometers to landscape evolution questions.

Solicited presenter: Nathan Brown - UC Berkeley (USA)

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Co-organized by CL5
Convener: Stefanie TofeldeECSECS | Co-conveners: Georgina King, Sebastian Kreutzer, Duna Roda-BoludaECSECS, Renee van DongenECSECS
Displays
| Fri, 08 May, 08:30–10:15 (CEST)
GM2.6

Characterizing and monitoring Earth surface processes often requires the development of challenging scientific approaches leading to the rise of innovative techniques. From the highest mountains to the deepest oceans, passive to active monitoring techniques are in constant progress and push further terra incognita boundaries. In particular, seismic techniques are becoming widely used to detect and quantitatively characterise a wide variety of natural processes occurring at the Earth’s surface. These processes include mass movements such as landslides, rock falls, debris flows and lahars; glacial phenomena such as icequakes, glacier calving/serac falls, glacier melt and supra- to sub-glacial hydrology; snow avalanches; water storage and water dynamics phenomena such as water table changes, river flow turbulence and fluvial sediment transport. Where other methods often provide limited spatial and temporal coverage, seismic observations allow recovering sequences of events with high temporal resolution and over large areas. In addition to seismic techniques, recent advances in other in-situ geophysical instrumentation (e.g. Doppler radar, sub bottom profilers, etc.) or remote sensing techniques (e.g. inSAR, unmanned aerial systems, unmanned maritime systems, etc.) have made remote monitoring and data acquisition a reality. These novel techniques represent more affordable, practical solutions for the collection of spatial and temporal data sets in challenging environments.
These observational capabilities allow establishing connections with meteorological drivers, and give unprecedented insights on the underlying physics of the various Earth’s surface processes as well as on their interactions (chains of events). These capabilities are also of first interest for real time hazards monitoring and early warning purposes.
This session aims to bring together research on seismic methods as well as holistic, novel and/or in-development monitoring solutions to study Earth surface dynamics, particularly in challenging and hostile areas. We welcome contributions from a broad range of disciplines (including geomorphology, cryospheric sciences, seismology, natural hazards, volcanology, soil system sciences and hydrology) and applications (from landslides, snow avalanches, glaciers, cave systems, marine/lake and submarine systems, to volcano and permafrost monitoring).

Solicited presenter: Zack Spica - University of Michigan (USA)

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Co-organized by GI5/NH4/SM1
Convener: Anne SchöpaECSECS | Co-conveners: Wei-An ChaoECSECS, Velio CovielloECSECS, Andrea Manconi, Arnaud WatletECSECS, Zakaria GhazouiECSECS
Displays
| Wed, 06 May, 16:15–18:00 (CEST)
ITS4.6/NH6.7

Smart monitoring and observation systems for natural hazards, including satellites, seismometers, global networks, unmanned vehicles (e.g., UAV), and other linked devices, have become increasingly abundant. With these data, we observe the restless nature of our Earth and work towards improving our understanding of natural hazard processes such as landslides, debris flows, earthquakes, floods, storms, and tsunamis. The abundance of diverse measurements that we have now accumulated presents an opportunity for earth scientists to employ statistically driven approaches that speed up data processing, improve model forecasts, and give insights into the underlying physical processes. Such big-data approaches are supported by the wider scientific, computational, and statistical research communities who are constantly developing data science and machine learning techniques and software. Hence, data science and machine learning methods are rapidly impacting the fields of natural hazards and seismology. In this session, we will see research from natural hazards and seismology for processes over a broad range of time and spatial scales.

Dr. Pui Anantrasirichai of the University of Bristol, UK will give the invited presentation:
Application of Deep Learning to Detect Ground Deformation in InSAR Data

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Co-organized by ESSI2/GI2/GM2/HS12/NP4/SM1
Convener: Hui TangECSECS | Co-conveners: Kejie ChenECSECS, Stephanie OlenECSECS, Fabio CorbiECSECS, Jannes Münchmeyer
Displays
| Wed, 06 May, 08:30–10:15 (CEST)
ITS4.5/GI1.4

Environmental systems often span spatial and temporal scales covering different orders of magnitude. The session is oriented in collecting studies relevant to understand multiscale aspects of these systems and in proposing adequate multi-platform and inter-disciplinary surveillance networks monitoring tools systems. It is especially aimed to emphasize the interaction between environmental processes occurring at different scales. In particular, a special attention is devoted to the studies focused on the development of new techniques and integrated instrumentation for multiscale monitoring high natural risk areas, such as: volcanic, seismic, energy exploitation, slope instability, floods, coastal instability, climate changes and other environmental context.
We expect contributions derived from several disciplines, such as applied geophysics, geology, seismology, geodesy, geochemistry, remote and proximal sensing, volcanology, geotechnical, soil science, marine geology, oceanography, climatology and meteorology. In this context, the contributions in analytical and numerical modeling of geological and environmental processes are also expected.
Finally, we stress that the inter-disciplinary studies that highlight the multiscale properties of natural processes analyzed and monitored by using several methodologies are welcome.

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Co-organized by AS4/CL2/GM2/GMPV9/NH8/NP3/OS4/SM5/SSS10
Convener: Pietro Tizzani | Co-conveners: Antonello Bonfante, Francesca Bianco, Raffaele Castaldo, Nemesio M. Pérez, Annalisa Cappello
Displays
| Fri, 08 May, 08:30–12:30 (CEST)
CL5.1

During the Quaternary Period, the last 2.6 million years of Earth's history, changes in environments, and climate shaped human evolution. In particular, large-scale features of atmospheric circulation patterns varied significantly due to the dramatic changes in global boundary conditions that accompanied abrupt changes in climate. Reconstructing these environmental changes relies heavily on precise and accurate chronologies. Dependent on records, time range, and research questions, different methods can be applied, or a combination of various dating techniques.
Varve counting and dendrochronology allow for the construction of high-resolution chronologies, whereas radiometric methods (radiocarbon, cosmogenic in-situ, U-Th) and luminescence aim at longer time scales and often are complementary or supportive.
In this session, contributions are particularly welcome that aim to (1) reduce, quantify and express dating uncertainties in any dating method, including high-resolution radiocarbon approaches; (2) use established geochronological methods to answer new questions; (3) use new methods to address longstanding issues, or; (4) combine different chronometric techniques for improved results, including the analysis of chronological datasets with novel methods, e.g. Bayesian age-depth modelling. Applications may aim to understand long-term landscape evolution, quantify rates of geomorphological processes, or provide chronologies for records of climate change.

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Co-organized by GM2/SSS3
Convener: Irka Hajdas | Co-conveners: Andreas Lang, Gina E. Moseley, Arne RamischECSECS
Displays
| Wed, 06 May, 08:30–10:15 (CEST)
HS9.3

Hydromorphological processes in aquatic environments such as rivers, estuaries as well as lakes and reservoirs, include entrainment, transport, deposition and sorting processes which are key features for various research disciplines, e.g. geomorphology and paleoclimatology or hydraulics and river engineering. An accurate evaluation of entrainment, transport and deposition transport rates as well as limited supply processes like e.g. scouring or grain sorting, effecting channel morphology and bed composition, is fundamental for an adequate development of conceptual sediment budget models and for the calibration and validation of numerical tools. With improved algorithms as well as an increasing computational power, it became feasible to simulate the interaction of water, sediments and air (multiphase flows) with high resolution in space and time. In addition, with an increasing quantity and quality of validation and verification data, both from laboratory experiments and field studies, numerical models become more accurate and it is possible to gain new insight in complex physical processes, e.g. dune development, river bed armoring or density driven transport.

The main goal of this session is to bring together the community of scientists, scholars and engineers, investigating, teaching and applying novel measurement techniques, monitoring concepts and numerical models, which are crucial to determine sedimentary and hydro-morphological processes in rivers, lakes and reservoirs, estuaries as well as in coastal and maritime environments. Within the focus of this session are the evaluation, quantification and modelling of bed load and suspended load, flocculation, settling, and re-suspension/erosion of such processes relevant to morphological channel changes as bed form development, horizontal channel migration, bed armouring and colmation.

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Co-organized by GM2
Convener: Kordula Schwarzwälder | Co-conveners: Sándor Baranya, Stefan Haun, Nils Rüther, Bernhard Vowinckel, Stefan Achleitner, Gabriele Harb, Axel Winterscheid
Displays
| Wed, 06 May, 10:45–12:30 (CEST), Wed, 06 May, 14:00–15:45 (CEST)
ITS4.2/ESSI4.2

All areas in the Earth sciences face the same problem of dealing with larger and more complex data sets that need to be analyzed, visualized and understood. Depending on the application domain and the specific scientific questions to be solved, different visualization strategies and techniques have to be applied. Yet, how we communicate those complex data sets, and the effect that visualization strategies and choices have on different (expert and non-expert) audiences as well as decision-makers remains an under-researched area of interest. For this "PICO only" session, we not only invite submissions that demonstrate how to create effective and efficient visualizations for complex and large earth science data sets but also those that discuss possibilities and challenges we face in the communication and tailoring of such complex data to different users/ audiences. Submissions are encouraged from all geoscientific areas that either show best practices or state of the art in earth science data visualization or demonstrate efficient techniques that allow an intuitive interaction with large data sets. In addition, we would like to encourage studies that integrate thematic and methodological insights from fields such as for example risk communication more effectively into the visualization of complex data. Presentations will be given as PICO (Presenting Interactive COntent) on large interactive touch screens. This session is supported by ESiWACE2. ESiWACE2 has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No 823988.

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Co-organized by EOS7/CL5/GD10/GM2
Convener: Niklas Röber | Co-conveners: Michael Böttinger, Joseph Daron, Susanne Lorenz
Displays
| Tue, 05 May, 16:15–18:00 (CEST)
HS1.1.4

River monitoring remains a challenge for hydrologists and environmental agencies. The expansion of the human population, urbanisation, technological advancements and a changing global climate have put forward an ongoing water management agenda. River streamflow is one of the most crucial hydrological variables in terms of 'basin health' description (from an ecological point of view), and for flood risk management and modelling. However, despite significant efforts on river flow monitoring, long-term, spatially dense monitoring networks remain scarce, stressing the need for innovative solutions dealing with the twin challenges of a changing climate. Emerging innovative methods should be tested and benchmarked under different flow conditions to ensure accurate and consistent results and well-understood measurement uncertainties. Furthermore, these methods must be harmonised for promoting good practices and dissemination over the globe. In this context, this session focuses on:

1) The use of remote sensing approaches for hydrological and morphological monitoring;
2) Real-time acquisition of hydrological variables;
3) Innovative methodologies for measuring/modelling/estimating river stream flows;
4) Measuring the extremes of high and low flows associated with a changing climate;
5) Strategies to quantify and describe hydro-morphological evolution of rivers;
6) New methods to cope with data-scarce environments;
7) Inter-comparison of innovative and classical models and approaches;
8) Quantification of uncertainties; and,
9) Guidelines for hydro-morphological streamflow monitoring.

Contributions are welcome with emphasis on image-velocimetry or other velocity measurement techniques, wetted cross-section retrieval from digital surface models (e.g. computed with multi-media photogrammetry/structure-from-motion, or other bathymetric techniques), and quantification of stream flows and related uncertainties. Additionally, presentations of case studies using innovative sensors, Unmanned Aerial Systems (UASs) and Unmanned Surface Vehicles (USVs), airborne or satellite-based approaches, and traditional in-situ measurements are encouraged. This session is sponsored by the COST Action CA16219, Harmonisation of UAS techniques for agricultural and natural ecosystems monitoring (HARMONIOUS).
Note: This session is complemented by a field-based short-course, SC2.9, offering attendees the opportunity to experience some of these tools and techniques in a river environment.

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Co-organized by GM2/NH1
Convener: Alonso PizarroECSECS | Co-conveners: Filippo BandiniECSECS, Silvano F. Dal SassoECSECS, Nick Everard, Alexandre Hauet, Ida Westerberg, Anette EltnerECSECS, Mark Randall
Displays
| Mon, 04 May, 10:45–12:30 (CEST)
GI1.3

This session is a result of a merge between GI1.3 and GM2.3:

Recent advances in image collection and topographic measurements are providing unprecedented insight into landscape and process characterization across the geosciences. In parallel, the increasing availability of digitised historical images, going back to the late 1800s, together with advances in digital photogrammetry software, have provided new opportunities for assessing and reconstructing long-term surface evolution from local to landscape scale. Such data can extend high-resolution time series into the pre-satellite era and offer exciting potential for distinguishing anthropogenic from natural causes of environmental change. For both historic and contemporary scenarios, augmenting classic techniques with digital imagery and ‘structure from motion’ (SfM) processing has democratized data access and offers a new measurement paradigm to geoscientists.

Such data are now available over spatial scales from millimetres to kilometres, and over durations of single events to lasting time series (e.g. from sub-second to century-duration time-lapse), allowing evaluation of event magnitude and frequency interrelationships. Despite a large volume of historical images available for reprocessing with modern methods, their full potential has not yet been widely exploited and uncertainties remain on the optimal types of information that can be extracted. Substantial opportunities are likely to be exposed by exploring such data resources with machine and deep learning approaches.

The session welcomes submissions from a broad range of geoscience disciplines such as geomorphology, cryosphere, volcanology, hydrology, bio-geosciences, and geology. Our goal is to create a diverse and interdisciplinary session to explore the potential of 2D and 3D image and topographic datasets for reconstructing and interpreting environments and processes, past and present. We aim to exchange experiences of modern photogrammetric and topographic measurement and modelling technologies, along with their associated data processing tools, to highlight their potentials, limitations, and challenges in different environments.

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Co-organized by EOS9/CL2/CR2/GM2/HS13/NH6
Convener: Livia PiermatteiECSECS | Co-conveners: Penelope HowECSECS, Wilfried KarelECSECS, Anette EltnerECSECS, Andreas KaiserECSECS, Mike James, Mark SmithECSECS, Jack WilliamsECSECS
Displays
| Fri, 08 May, 08:30–10:15 (CEST)
GI2.3

The interactions between geo-environmental and anthropic processes are increasing due to the ever-growing population and its related side effects (e.g., urban sprawl, land degradation, natural resource and energy consumption, etc.). Natural hazards, land degradation and environmental pollution are three of the possible “interactions” between geosphere and anthroposphere. In this context, spatial and spatiotemporal data are of crucial importance for the identification, analysis and modelling of the processes of interest in Earth and Soil Sciences. The information content of such geo-environmental data requires advanced mathematical, statistical and geomorphometric methodologies in order to be fully exploited.

The session aims to explore the challenges and potentialities of quantitative spatial data analysis and modelling in the context of Earth and Soil Sciences, with a special focus on geo-environmental challenges. Studies implementing intuitive and applied mathematical/numerical approaches and highlighting their key potentialities and limitations are particularly sought after. A special attention is paid to spatial uncertainty evaluation and its possible reduction, and to alternative techniques of representation of spatial data (e.g., visualization, sonification, haptic devices, etc.).

In the session, two main topics will be covered (although the session is not limited to them!):
1) Analysis of sparse (fragmentary) spatial data for mapping purposes with evaluation of spatial uncertainty: geostatistics, machine learning, statistical learning, etc.
2) Analysis and representation of exhaustive spatial data at different scales and resolutions: geomorphometry, image analysis, machine learning, pattern recognition, etc.

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Co-organized by ESSI2/GM2/SSS10
Convener: Caterina GozziECSECS | Co-conveners: Marco Cavalli, Sebastiano Trevisani
Displays
| Wed, 06 May, 10:45–12:30 (CEST)
GI5.1

Ground Penetrating Radar (GPR) is a safe, advanced, non-destructive and non-invasive imaging technique that can be effectively used for inspecting the subsurface as well as natural and man-made structures. During GPR surveys, a source is used to send high-frequency electromagnetic waves into the ground or structure under test; at the boundaries where the electromagnetic properties of media change, the electromagnetic waves may undergo transmission, reflection, refraction and diffraction; the radar sensors measure the amplitudes and travel times of signals returning to the surface.

This session aims at bringing together scientists, engineers, industrial delegates and end-users working in all GPR areas, ranging from fundamental electromagnetics to the numerous fields of applications. With this session, we wish to provide a supportive framework for (1) the delivery of critical updates on the ongoing research activities, (2) fruitful discussions and development of new ideas, (3) community-building through the identification of skill sets and collaboration opportunities, (4) vital exposure of early-career scientists to the GPR research community.

We have identified a series of topics of interest for this session, listed below.

1. Ground Penetrating Radar instrumentation
- Innovative GPR systems and antennas
- Equipment testing and calibration procedures

2. Ground Penetrating Radar methodology
- Survey planning and data acquisition strategies
- Methods and tools for data analysis, interpretation and visualization
- Data processing, electromagnetic modelling, imaging and inversion techniques
- Studying the relationship between GPR sensed quantities and physical properties of inspected subsurface/structures useful for application needs

3. Ground Penetrating Radar applications and case studies
- Earth sciences
- Civil and environmental engineering
- Archaeology and cultural heritage
- Management of water resources
- Humanitarian mine clearance
- Vital signs detection of trapped people in natural and manmade disasters
- Planetary exploration

4. Combined use of Ground Penetrating Radar and other geoscience instrumentation, in all applications fields

5. Communication and education initiatives and methods

-- Notes --
This session is organized by Members of TU1208 GPR Association (www.gpradar.eu/tu1208), a follow-up initiative of COST (European Cooperation in Science and Technology) Action TU1208 “Civil engineering applications of Ground Penetrating Radar”.

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Co-organized by EMRP2/GM2/NH6
Convener: Aleksandar Ristic | Co-conveners: Alessandro FedeliECSECS, Lara Pajewski, Luis Rees-HughesECSECS, Milan VrtunskiECSECS
Displays
| Wed, 06 May, 10:45–12:30 (CEST)
ITS4.9/ESSI2.17

Most of the processes studied by geoscientists are characterized by variations in both space and time. These spatio-temporal phenomena have been traditionally investigated using linear statistical approaches, as in the case of physically-based models and geostatistical models. Additionally, the rising attention toward machine learning, as well as the rapid growth of computational resources, opens new horizons in understanding, modelling and forecasting complex spatio-temporal systems through the use of stochastics non-linear models.
This session aims at exploring the new challenges and opportunities opened by the spread of data-driven statistical learning approaches in Earth and Soil Sciences. We invite cutting-edge contributions related to methods of spatio-temporal geostatistics or data mining on topics that include, but are not limited to:
- advances in spatio-temporal modeling using geostatistics and machine learning;
- uncertainty quantification and representation;
- innovative techniques of knowledge extraction based on clustering, pattern recognition and, more generally, data mining.
The main applications will be closely related to the research in environmental sciences and quantitative geography. A non-complete list of possible applications includes:
- natural and anthropogenic hazards (e.g. floods; landslides; earthquakes; wildfires; soil, water, and air pollution);
- interaction between geosphere and anthroposphere (e.g. land degradation; urban sprawl);
- socio-economic sciences, characterized by the spatial and temporal dimension of the data (e.g. census data; transport; commuter traffic).

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Co-organized by GM2/HS12/NH8/NP4/SSS12
Convener: Federico AmatoECSECS | Co-conveners: Fabian GuignardECSECS, Luigi LombardoECSECS, Marj Tonini
Displays
| Fri, 08 May, 16:15–18:00 (CEST)
NH9.12

In recent years an increasing number of research projects focused on natural hazards (NH) and climate change impacts, providing a variety of information to end user or to scientists working on related topics.

The session aims at promoting new and innovative studies, experiences and models to improve risk management and communication about natural hazards to different end users.

End users such as decision and policy makers or the general public, need information to be easy and quickly interpretable, properly contextualized, and therefore specifically tailored to their needs. On the other hand, scientists coming from different disciplines related to natural hazards and climate change (e.g., economists, sociologists), need more complete dataset to be integrated in their analysis. By facilitating data access and evaluation, as well as promoting open access to create a level playing field for non-funded scientists, data can be more readily used for scientific discovery and societal benefits. However, the new scientific advancements are not only represented by big/comprehensive dataset, geo-information and earth-observation architectures and services or new IT communication technologies (location-based tools, games, virtual and augmented reality technologies, and so on), but also by methods in order to communicate risk uncertainty as well as associated spatio-temporal dynamic and involve stakeholders in risk management processes.

However, data and approaches are often fragmented across literature and among geospatial/natural hazard communities, with an evident lack of coherence. Furthermore, there is not a unique approach of communicating information to the different audiences. Rather, several interdisciplinary techniques and efforts can be applied in order to simplify access, evaluation, and exploration to data.

This session encourages critical reflection on natural risk mitigation and communication practices and provides an opportunity for geoscience communicators to share best methods and tools in this field. Contributions – especially from Early Career Scientists – are solicited that address these issues, and which have a clear objective and research methodology. Case studies, and other experiences are also welcome as long as they are rigorously presented and evaluated.

In cooperation with NhET (Natural hazard Early career scientists Team

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Co-organized by GM2
Convener: Raffaele AlbanoECSECS | Co-conveners: Valeria CigalaECSECS, Emanuela Toto, Veronica Casartelli, Jonathan RizziECSECS
Displays
| Fri, 08 May, 10:45–12:30 (CEST)
NH6.1

Remote sensing and Earth Observations (EO) are used increasingly in the different phases of the risk management and in development cooperation, due to the challenges posed by contemporary issues such as climate change, and increasingly complex social interactions. The advent of new, more powerful sensors and more finely tuned detection algorithms provide the opportunity to assess and quantify natural hazards, their consequences, and vulnerable regions, more comprehensively than ever before.
Several agencies have now inserted permanently into their program the applications of EO data to risk management. During the preparedness and prevention phase, EO revealed, fundamental for hazard, vulnerability and risk mapping. EO data intervenes both in the emergency forecast and early emergency response, thanks to the potential of rapid mapping. EO data is also increasingly being used for mapping useful information for planning interventions in the recovery phase, and then providing the assessment and analysis of natural hazards, from small to large regions around the globe. In this framework, Committee on Earth Observation Satellites (CEOS) has been working from several years on disasters management related to natural hazards (e.g., volcanic, seismic, landslide and flooding ones), including pilots, demonstrators, recovery observatory concepts, Geohazard Supersites and Natural Laboratory (GSNL) initiatives and multi-hazard management projects.

The session is dedicated to multidisciplinary contributions focused on the demonstration of the benefit of the use of EO for natural hazard and risk management.
The research presented might focus on:
- Addressed value of EO data in hazard/risk forecasting models
- Innovative applications of EO data for rapid hazard, vulnerability and risk mapping, the post-disaster recovery phase, and in support of disaster risk reduction strategies
- Development of tools for assessment and validation of hazard/risk models

The use of different types of remote sensing (e.g. thermal, visual, radar, laser, and/or the fusion of these) is highly recommended, with an evaluation of their respective pros and cons focusing also on future opportunities (e.g. new sensors, new algorithms).
Early-stage researchers are strongly encouraged to present their research. Moreover, contributions from international cooperation, such as CEOS and GEO initiatives, are welcome.

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Co-organized by GM2
Convener: Paolo Tarolli | Co-conveners: Kuo-Jen Chang, Maria Fabrizia Buongiorno, Michelle Parks, Antonio Montuori, Francesco Marchese
Displays
| Thu, 07 May, 14:00–18:00 (CEST)

GM3 – Weathering, Soils, and Sediment Transport

GM3.4

Biota affect hydrology, sediment transport, weathering, soil formation over variable temporal and spatial scales and thereby influence, hillslope, fluvial, coastal, and aeolian landscape form and dynamics. In turn, geomorphological processes have large impacts on ecological processes and biogeochemical fluxes by shaping topography and affecting water availability, which determines biological diversity and succession.

Understanding these feedbacks between biological and geomorphological processes is becoming increasingly important as new ‘building with nature’ projects emerge and also increasingly find its way into management (i.e. restoration projects, nature based solutions). Despite some advances, the conceptualisation and quantification of the processes, rates and feedbacks between geomorphology and ecology are still limited, particularly in systems that are sensitive to human-induced or natural environmental change (e.g. high-mountain and polar environments, deserts, hillslopes, rivers and wetlands, salt marshes and deltas). Furthermore, biogeomorphic feedbacks influence important environmental fluxes, and this connection remains poorly understood.

This session firstly seeks contributions that are investigating biogeomorphology on all spatial and temporal scales, including experimental, field and computational/numerical modelling studies. Secondly, the focus lies on studies investigating spatial and temporal variations in biogeomorphic systems controlled by complex feedbacks or heterogeneity in ecosystems which influence physical (e.g. sediment cohesion), biogeochemical (e.g. nutrient and carbon cycling) and ecological processes (e.g. biodiversity). This heterogeneity results in alterations to environmental fluxes (e.g. sediments, water, biogeochemical), the overall functioning of the systems, as well as any potential benefits from ecosystem services. By bringing together scientists from the fields of Geomorphology, Hydrology, Biogeosciences, and Soil Science, in this trans-disciplinary session we aim to stimulate discussion regarding the effects of ecosystem heterogeneity and complexity originating from biogeomorphic systems on environmental processes and feedbacks across varying spatial and temporal scales.

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Co-organized by HS9
Convener: Annegret LarsenECSECS | Co-conveners: Nico BätzECSECS, Jana EichelECSECS, William NardinECSECS, Wietse van de LagewegECSECS, Hana JurikovaECSECS
Displays
| Thu, 07 May, 16:15–18:00 (CEST)
GM3.5

Transport of sediments in geophysical flows occurs in mountainous, fluvial, estuarine, coastal, aeolian and other natural or man-made environments on Earth and has been shown to play important formative roles in planets and satellites such as Mars, Titan, and Venus. Understanding the motion of sediments is still one of the most fundamental problems in hydrological and geophysical sciences. Such processes can vary across a wide range of scales - from the particle to the landscape - which can directly impact both the form (geomorphology) and, on Earth, the function (ecology and biology) of natural systems and the built infrastructure surrounding them. In particular, feedback between flow and sediment transport as well as interparticle interactions including size sorting are a key processes in surface dynamics, finding a range of important applications, from hydraulic engineering and natural hazard mitigation to landscape evolution and river ecology.
Specific topics of interest include (but are not restricted to):
-particle-scale mechanics of entrainment and disentrainment
-Discrete element modelling of granular processes and upscaling into continuum frameworks
-upscaling and averaging techniques for stochastic processes related to granular processes
-interaction among grain sizes in poorly sorted mixtures, including particle segregation
-momentum/energy transfer between turbulent flows and particles
-derivation and solution of equations in particular for multiphase flows
-reach scale sediment transport and geomorphic processes
-shallow water hydro-sediment-morphodynamic processes
-fluvial processes in response to reservoir operation schemes

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Co-organized by HS13
Convener: Manousos Valyrakis | Co-conveners: Philippe Frey, Rui Miguel Ferreira, Alexandre Valance, Zhixian Cao, Kimberly Hill, Eric Lajeunesse, Mário J Franca
Displays
| Thu, 07 May, 08:30–12:30 (CEST)
GM3.6

Hydro-geomorphic connectivity has emerged as a significant conceptual framework for understanding the transfer of surface water and materials (e.g., sediment, plant propagules, and nutrients) through landscapes. The concept has had particular success in the field of catchment hydrology and fluvial geomorphology, but has also been employed in, for example, studies of soil erosion and hydrochory, and in neurosciences and social sciences. Connectivity as applied in various disciplines can be a transformative concept in understanding complex systems, allowing analyses of how such systems behave in terms of scaling, catastrophic/phase transitions, critical nodes, emergence and self-organization. However, recent research also highlights the widespread nature of natural longitudinal disconnectivity in river systems, such as beaver dams, log jams, lakes and wetlands. These and other forms of natural disconnectivity can have large spatial and temporal implications on ecological, geomorphic, hydrological and biogeochemical processes through buffering water and material fluxes. We aim to create a diverse interdisciplinary session that reflects a broad range of research seeking to illustrate the role of connectivity on various spatial scales as well as implications of and temporal and spatial variability of disconnectivity. We hope to use the session to develop a discussion of the dual roles of connectivity and disconnectivity to generate a basis for an integrated framework to be applied across the sciences in hydro-geomorphic systems and for managing complex systems and guiding river restoration.

Public information:
CHAT PROGRAMME

1) General introduction by the conveners (“setting the context”) – 5 min

2) ‘Mentimeter’ poll (conveners, authors, audience) – 5 min

3) Displays (max. 7 min per display):

• Invited “speakers” first (Gordon Grant, Ellen Wohl, Rebekah Levine)
• Then following the order as shown in the official EGU session programme (and in your panel to the right of the chat window)

Procedure: Each display will be announced by the session moderators asking the “speakers” to post key messages related to their display material. Then the audience is kindly asked to post questions/statements for discussion.

4) Concluding remarks (conveners) – 5 min

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Co-organized by HS13/SSP3, co-sponsored by IAG
Convener: Ronald PöpplECSECS | Co-conveners: Lina Polvi Sjöberg, Laura Turnbull, Manuel López-Vicente, Jantiene BaartmanECSECS, Lovisa Eirell, Anthony Parsons
Displays
| Wed, 06 May, 16:15–18:00 (CEST)
GM3.7

The erosion, transport, temporary storage, and deposition of sediment govern the fluxes and distribution of solid mass on the surface of the Earth. The rate and extent of these mass fluxes is controlled by the complex interplay of surface processes that act across a range of spatial and temporal scales. Understanding these processes and their dependence on external forcing (e.g. climate, tectonics) and internal feedbacks (autogenic dynamics) is instrumental for constraining the cycling of sediment from source-to-sink, and to invert sedimentary archives for past environments.
A growing body of studies continues to develop a process-based understanding of the coupling between climate, tectonics, erosion, and the transport of solids across large catchments. Important insights into sediment recycling and residence time have been provided by recent advances in geochemical and geophysical techniques, highlighting the dynamic nature of sediment transport. However, many challenges remain including; (1) fully quantifying the time- and spatial scales of sediment transport, (2) tracking signals across catchments and inverting sedimentary records, and (3) assessing the importance of large and infrequent events in controlling erosion and sediment transport.
In this session we welcome field-based, experimental, and modelling studies, that (1) constrain mechanisms, rates, and scales of erosion, transport, and deposition processes, (2) analyse the influence of internal and external forcing on these processes, (3) investigate the propagation of geochemical or physical signals across the earth surface (such as changes in sedimentary fluxes, grain size distributions, cosmogenic nuclide concentrations) and (4) invert sedimentary archives to learn about past environments. Contributions across all temporal and spatial scales are welcome. We particularly encourage early career scientists to apply for this session.

Solicited presenter: Elizabeth Dingle (Simon Fraser University)

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Co-organized by BG4/HS13/SSP3
Convener: Oliver FrancisECSECS | Co-conveners: Aaron BufeECSECS, Lisa HarrisonECSECS, Stefanie TofeldeECSECS
Displays
| Fri, 08 May, 10:45–12:30 (CEST)
SSS8.12

The changes in mineral and organo-mineral assemblages during pedogenesis are affected by chemical weathering and transformation of primary minerals over a wide range of time scales. The subsequent formation and transformation of secondary minerals are tightly linked to hydrological conditions and biological processes. Changes in mineral types, organo-mineral organisation and reactivities constrain the biogeochemical cycles of major elements (e.g., silicon, carbon, nitrogen, phosphorus, and sulphur) and trace elements (e.g., iron, manganese, antimony, cadmium, molybdenum, and selenium) which are often intricately coupled and controls the release, transport, and immobilization of nutrients and toxic trace elements, especially in redox-dynamic soil environments. The distribution of elements in soil affects soil quality, biota, ecosystem health, and ultimately, Earth’s climate and life. In this session, we invite field, laboratory, and modelling studies from a molecular-level to ecosystem observations exploring:
(1) the mechanisms and rates of mineral weathering, formation, and transformation at different time scales, as well as the links to biogeochemical element cycling,
(2) the speciation, reactivity, and environmental fate of elements during soil wetting and drying, freezing and thawing, and changing water-flow regimes, and
(3) the impact of mineral weathering and redox oscillations on element turnover, climate, and biota.

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Co-organized by BG3/GM3
Convener: Klaus Kaiser | Co-conveners: Beatrice GiannettaECSECS, Anika KlotzbücherECSECS, Mélanie Davranche, Jörg Schaller, Cecile Gautheron, Julia Cooke, Julien Bouchez
Displays
| Thu, 07 May, 08:30–12:30 (CEST)
HS8.1.4

Dissolution, precipitation and chemical reactions between infiltrating fluid and rock matrix alter the composition and structure of the rock, either creating or destroying flow paths. Strong, nonlinear couplings between the chemical reactions at mineral surfaces and fluid motion in the pores often leads to the formation of intricate patterns: networks of caves and sinkholes in karst area, wormholes induced by the acidization of petroleum wells, porous channels created during the ascent of magma through peridotite rocks. Dissolution and precipitation processes are also relevant in many industrial applications: dissolution of carbonate rocks by CO2-saturated water can reduce the efficiency of CO2 sequestration, mineral scaling reduces the effectiveness of heat extraction from thermal reservoirs, acid rain degrades carbonate-stone monuments and building materials.

With the advent of modern experimental techniques, these processes can now be studied at the microscale, with a direct visualization of the evolving pore geometry. On the other hand, the increase of computational power and algorithmic improvements now make it possible to simulate laboratory-scale flows while still resolving the flow and transport processes at the pore-scale.

We invite contributions that seek a deeper understanding of reactive flow processes through interdisciplinary work combining experiments or field observations with theoretical or computational modeling. We seek submissions covering a wide range of spatial and temporal scales: from table-top experiments and pore-scale numerical models to the hydrological and geomorphological modelling at the field scale. We also invite contributions from related fields, including the processes involving coupling of the flow with phase transitions (evaporation, sublimation, melting and solidification).

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Co-organized by ERE6/GM3/GMPV6
Convener: Piotr Szymczak | Co-conveners: Sylvain Courrech du Pont, Linda Luquot
Displays
| Tue, 05 May, 16:15–18:00 (CEST)
HS9.5

The transfer of sediments and associated contaminants play an important role in catchment ecosystems as they directly influence water quality, habitat conditions and biogeochemical cycles. Contaminants may include heavy metals, pesticides, nutrients, radionuclides, and various organic, as well as organometallic compounds. The environmental risk posed by sediment-bound contaminants is largely determined by the sources and rate at which sediments are delivered to surface water bodies, the residence time in catchments, lakes and river systems as well as biogeochemical transformation processes. However, the dynamics of sediment and contaminant redistribution is highly variable in space and time due to the complex non-linear processes involved. This session thus focuses on sources, transport pathways, storage and re-mobilization, and travel times of sediments and contaminants across temporal and spatial scales as well as their impact on catchment and freshwater ecosystems.

This session particularly addresses the following issues:
• Delivery rates of sediments and contaminants from various sources (i.e. agriculture, urban areas, mining, industry or natural areas);
• Transport, retention and remobilization of sediments and contaminants in catchments and river reaches;
• Modelling of sediment and contaminant transport on various temporal and spatial scales;
• Biogeochemical controls on contaminant transport and transformation;
• Studies on sedimentary processes and morphodynamics, particularly sediment budgets;
• Linkages between catchment systems and lakes, including reservoirs;
• Analysis of sediment archives to appraise landscape scale variations in sediment and contaminant yield over medium to long time-scales;
• Impacts of sediments and contaminants on floodplain, riparian, hyporheic and other in-stream ecosystems;
• Response of sediment and contaminant dynamics in catchments, lakes and rivers to changing boundary conditions and human actions.

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Co-organized by GM3
Convener: Marcel van der Perk | Co-convener: Núria Martínez-Carreras
Displays
| Tue, 05 May, 08:30–10:15 (CEST)
NH3.5

Debris flows are among the most dangerous natural hazards that threaten people and infrastructures in both mountainous and volcanic areas. The study of the initiation and of the dynamics of debris flows, along with the characterization of the associated erosion/deposition processes, is of paramount importance for hazard assessment, land-use planning and design of mitigation measures, including early warning systems.
A growing number of scientists with diverse backgrounds are studying debris flows and lahars. The difficulties in measuring parameters related to their initiation and propagation have progressively prompted research into a wide variety of laboratory experiments and monitoring studies. However, there is a need of improving the quality of instrumental observations that would provide knowledge for more accurate hazards maps and modeling. Nowadays, the combination of distributed sensor networks and remote sensing techniques represents a unique opportunity to gather direct observations of debris flows to better constrain their physical properties.
Scientists working in the field of debris flows are invited to present their recent advancements. In addition, contributions from practitioners and decision makers are also welcome. Topics of the session include: field studies and documentation, mechanics of debris-flow initiation and propagation, laboratory experiments, modeling, monitoring, hazard and risk assessment and mapping, early warning, and alarm systems.

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Co-organized by GM3/HS13
Convener: Marcel Hürlimann | Co-conveners: Velio CovielloECSECS, Xiaojun Guo, Roland Kaitna
Displays
| Tue, 05 May, 14:00–18:00 (CEST)
SSS10.7

Soil organic matter (SOM) is an ecosystem property that emerges from a suite of complex biological, geochemical, and physical interactions across scales. As the largest pool of actively-cycling terrestrial carbon, understanding how SOM persistence and vulnerability will respond to global change is critical. However, Earth System Models (ESMs) are often unable to capture emergent SOM patterns and feedbacks at across smaller spatial and temporal scales. Identifying, prioritizing, and scaling key driving mechanisms from detailed process models to advance ESMs is crucial, and better empirical constraints on SOM pools and fluxes are urgently needed to advance understanding and provide model benchmarks. Interdisciplinary research and observation networks collecting long-term, geographically-distributed data can help elucidate key mechanisms, and international efforts that synthesize and harmonize these data are needed to inform data-model comparisons.

We invite theoretical and empirical contributions that investigate controls on SOM across scales, from detailed process understanding to emergent landscape-scale dynamics in natural and managed ecosystems. We seek modelling studies that work across scales, data analyses that leverage multi-site networks and/or long-term experiments, or collaborations between empiricists and modelers within and across networks. Studies that use novel tools across scales, from microbial -omics to remote sensing, are also welcome.

This session has been promoted by:
• Sustainable Agro-ecosystems (AGRISOST, https://www.agrisost.org/en/)
• International Soil Modeling Consortium (ISMC, https://soil-modeling.org/)

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Co-organized by GM3/NP3
Convener: Katerina GeorgiouECSECS | Co-conveners: Rose AbramoffECSECS, Alison HoytECSECS, Avni MalhotraECSECS, Artem Vladimirov, Claudia CagnariniECSECS, Marion Schrumpf, Ana Maria Tarquis
Displays
| Thu, 07 May, 10:45–12:30 (CEST)

GM4 – Hillslopes, Catchments and Landscape

GM4.2

Physical erosion and chemical weathering dominate the evolution of surface and subterranean mountain landscapes over a wide range of temporal and spatial scales. Signals from processes such as glacial and periglacial erosion, chemical and mechanical weathering, rockfall, debris flow, and hillslope failure are preserved in downstream patterns of river and/or valley aggradation and incision as well as in the development of karst systems and their sediment deposits. These processes react to a wide spectrum of external and internal forcings (e.g. climatic variability, tectonic activity, spatial patterns of vegetation or sudden internal failure) often making it difficult to relate these records back to specific causal mechanisms.

Measuring the dynamical interplay of erosion, weathering and sedimentation as well as quantifying the rates and fluxes associated with the evolution of mountainous landscapes, is a crucial but challenging component of source-to-sink sediment research. Many of these processes also pose serious threats to the biosphere, mountain settlements and infrastructure. Understanding and quantifying these processes from both a societal and engineering point of view will lead to better preparation and responses to such threats.

We welcome contributions that (1) investigate the processes of production, mobilisation, transport, and deposition of sediment in mountain landscapes, (2) study the development of cave systems and their sedimentary archive in relation to external base-level conditions and internal dynamics (3) explore feedbacks between erosion and weathering due to natural and anthropogenic forcings, (4) address the role these processes play in the larger source-to-sink context, and (5) consider how these processes contribute to natural hazards specific to mountain landscapes. We invite presentations that employ observational, analytical or modelling approaches in mountain environments across a variety of temporal and spatial scales. We particularly encourage early career scientists to apply for this session.

Public information:
Block 1 schedule:

14:00-14:10: A bit of time to explore the displays.
14:10: Oliver Francis D1106 EGU2020-891 The fate of sediment after a large earthquake
14:20: Rachel Glade (solicited) D1107 EGU2020-12761 River canyon evolution governed by autogenic channel-hillslope feedbacks
14:35: Benjamin Campforts D1108 EGU2020-13064 To slide or not to slide: explicit integration of landslides and sediment dynamics in a landscape evolution model
14:45: Philippe Vernant D1109 EGU2020-9099 First quantitative evidences of ghost-rock karstification controlling regional karst geometry
14:55: Robert Hilton D1112 EGU2020-5624 A shifting view of erosion and the carbon cycle
15:05: Stephanie Olen D1114 EGU2020-5939 Synthetic aperture radar coherence as a proxy for geomorphic activity
15:15: Eric Deal D1115 EGU2020-5510 Analytical long-profile models of coupled glacier-fluvial systems
15:25: Anna Masseroli D1119 EGU2020-749 Differentiation among geomorphological processes in a mountain hydrographic basin by means of soils analyses
15:35: Alex Beer D1122 EGU2020-12980 Bedrock Topographic Evolution from Rockfall Erosion

Block 2 schedule:
16:20: Sharon Pittau D1123 EGU2020-10391 A multi-temporal inventory for constraining earthflow source-to-sink pathways in the Sillaro River basin, Northern Apennines
16:30: Emma Graf D1126 EGU2020-455 Where does all the gravel go? Tracking landslide sediment from the 2015 Gorkha earthquake along the Kosi River, Nepal
16:40: Paul Krenn D1127 EGU2020-13255 Analysing the impacts of extreme precipitation events on geomorphic systems in torrential catchments; a comparative study from Upper Styria, Austria
16:50: Benjamin Purinton D1129 EGU2020-3943 Multiband (X, C, L) radar amplitude analysis for a mixed sand- and gravel-bed river in the eastern central Andes
17:00: Jinyu Zhang D1131 EGU2020-12497 Reconstructing aggradation and incision of the Lancang River (Upper Mekong) at Yunlong reach, southeast Tibet
17:10: Frank Lehmkuhl D1132 EGU2020-3893 Quaternary paleoenvironmental change preserved in alluvial fans systems in semiarid to arid mountain areas: Examples from western Mongolia, western USA, and the Chilean Andes
17:20: Erica Erlanger D1134 EGU2020-12043 Partitioning the denudation flux between silicate and carbonate physical erosion and chemical weathering in the Northern Apennines
17:30: Tim Jesper Suhrhoff D1136 EGU2020-18195 Weathering signals in Lake Baikal and its tributaries
17:40: Maarten Lupker D1137 EGU2020-4480 Chemical weathering pathways in the central Himalaya – new constraints from DI14C and δ34S
17:50: Luca Pisani D1140 EGU2020-3935 Karst porosity development in layered and fractured carbonates: field evidences of structural control on sulfuric acid speleogenesis (Majella Massif, Italy)

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Co-organized by NH3/SSP3
Convener: Elizabeth DingleECSECS | Co-conveners: Luca C MalatestaECSECS, Erica ErlangerECSECS, Larissa de PalézieuxECSECS, Stefan HaselbergerECSECS, Andrea ColumbuECSECS, Jeremy Caves RugensteinECSECS
Displays
| Thu, 07 May, 14:00–18:00 (CEST)
GM4.3

Land cover plays a key role for geomorphic processes in steep-land environments. It exhibits both beneficial and adverse effects on hillslope denudation and substantially influences landscape evolution. Land cover information becomes of fundamental importance in many applications for assessing soil erosion loss and landslide activity at difference scales, from local to global analysis. Apparent land cover of a landscape affects the accuracy of most investigations that aim to detect, observe, analyse, model or predict geomorphic and landform-shaping processes. In contrast, denudational processes have a strong impact on both natural ecosystems and cultivated land, leading from increasing environmental diversity to economic damages.
This session is designed to cluster the most recent scientific researches on the analyses, modelling and prediction of soil erosion and landslide processes that are directly linked to land cover dynamics. Such variations can alter the soil properties as soil reinforcement and soil aggregation, and make the modelling and prediction of higher complexity.
Studies that pay heed on the impact of land cover changes on shallow or deep-seated and transient or long-term slope instabilities as well as surface water flow and related soil erosion processes are welcome. Research abstracts are invited to address:
1. observation and detection of different land cover types, land use changes and occurrences of erosion or landslides using a wide spectrum of technologies, from field measurements to remote sensing techniques;
2. analyses on the relationship between land cover and geomorphic processes from local to regional scale;
3. prediction of impacts on surface water flow, erosion and slope stability due to land cover changes;
4. innovative modelling approaches for assessing soil instabilities (statistical, physically-based, numerical) that focus on model implementation, parameterisation, uncertainties and simulation of land cover evolution;
5. development of guidelines and regulations for practitioners, technicians, policy and decision makers.
We highly welcome pioneering research from all fields, especially from geomorphology, agricultural science, soil science, geotechnics and environmental engineering. In particular, young career scientists are encouraged to contribute to the session with original and advanced studies.

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Co-organized by SSS2
Convener: Elmar SchmaltzECSECS | Co-conveners: Alessio CislaghiECSECS, Stefan StegerECSECS
Displays
| Tue, 05 May, 14:00–15:45 (CEST)
GM4.4

A key goal within geomorphic research is understanding the processes linking topographic form, erosion rates, and sediment production, transport and deposition. Numerical modelling, by allowing the creation of controlled analogues of natural systems, provides exciting opportunities to explore landscape evolution and generate testable predictions.

In this session, we invite contributions that use numerical modelling to investigate landscape evolution in a broad sense, and over a range of spatial and temporal scales. We welcome studies using models to constrain one or more of: erosion rates and processes, sediment production, transport and deposition, and sediment residence times. We also particularly wish to highlight studies that combine numerical modelling with direct Earth surface process monitoring techniques, such as topographic, field, stratigraphic, or geochronological data. Contributions using numerical models to unravel the interaction between environmental variables such as precipitation and lithology are further encouraged. There is no geographical restriction: studies may be focused on mountain environments or sedimentary basins, or they may establish links between the two. Studies beyond planet Earth are welcome too.

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Co-organized by SSS10
Convener: Fiona ClubbECSECS | Co-conveners: Benjamin CampfortsECSECS, Boris GailletonECSECS, Kimberly HuppertECSECS, Jörg Robl
Displays
| Tue, 05 May, 08:30–10:15 (CEST)
GM4.5

Denudation, including both chemical and mechanical processes, is of high relevance for Earth surface and landscape development and the transfer of solutes and sediments from headwater systems through main stem of drainage basin systems to the world oceans. Denudational hillslope and fluvial processes and associated source-to-sink fluxes and sedimentary budgets are controlled by a range of environmental drivers and can be significantly affected by climate change and anthropogenic activities.
The better understanding of possible effects of ongoing and accelerated environmental changes (including large-scale damming, hydrological change, and sediment mining) on present-day denudation requires systematic and quantitative studies on the actual drivers of denudational processes. Only if we have an improved quantitative knowledge of the drivers and rates of contemporary denudational hillslope and fluvial processes, as well as of the connectivity in landscapes and between hillslope and fluvial systems across a range of different spatio-temporal scales and selected climatic zones, can the possible effects of climatic changes and anthropogenic impacts and other disturbances be better assessed.
This session includes scientific contributions on denudational hillslope and fluvial processes, mass transfers, sedimentary budgets and landscape responses to ongoing and accelerated environmental changes in different climatic zones. Oral and poster contributions cover a wide range of different spatial scales, from hillslope and small headwater systems to large drainage basin systems. The session brings together and discusses a wide range of advanced techniques and methods of data collection and generation, including field-based, laboratory-based, remotely-sensed and dating techniques together with various approaches and methods of data analysis and geomorphologic modelling. The session seeks not only to identify the causes and drivers of changes in water, sediment and solute fluxes from "source-to-sink", but to also includes studies that present options for future sustainable management that recognise the particular characteristics and challenges of these complex systems.

The session is co-organized by the IAG Working Group on Denudation and Environmental Changes in Different Morphoclimatic Zones (DENUCHANGE).
Solicited speaker: Edgardo M. Latrubesse (Singapore)

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Co-organized by HS13/NH10, co-sponsored by IAG
Convener: Achim A. Beylich | Co-conveners: Katja Laute, Ana Navas, Olimpiu Pop, Zbigniew Zwoliński, Stephen Darby, Jim Best, Frances DunnECSECS
Displays
| Fri, 08 May, 14:00–15:45 (CEST)
NH3.10

In many parts of the world, landslide phenomena are a direct response to rapid environmental changes caused by global warming, human influences or other natural or technological hazards. The development of methods and strategies to evaluate hazard and risk posed by different types of landslides with different magnitudes in different environments has significantly progressed in the last decades due to rapid advance of computational and monitoring technologies. However, prognostic hazard and risk evaluations are highly challenged by the fact that local and regional environmental and meteorological conditions are subjected to rapid changes due to global warming and its consequences, modifying the local terrain susceptibility to landslides. Additionally, global change leads to significant changes in patterns of objects-at-risk due to population changes and concurring infrastructural developments.
This session aims to collect papers dealing with the advancement of methods and strategies for the prognostic spatio-temporal development of landslide hazard and risk scenarios and potentials in times of rapid global environmental change. Contributions dealing with the preparation and use of event-based landslide inventories for landslide hazard scenario assessments are welcomed as well as papers describing new advancements in process-oriented techniques for landslide hazard modelling at different spatial scales. Of particular interest are contributions concerned with the assessment of changing patterns of landslide-related risk posed to developing population and infrastructure in times of rapid environmental change.

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Co-organized by GM4
Convener: Paola Reichenbach | Co-conveners: Andreas Günther, Mihai Micu
Displays
| Thu, 07 May, 08:30–10:15 (CEST)
NH3.2

Rockfalls, rockslides and rock avalanches are fundamental modes of erosion on steep hillslopes, and among the primary hazards in steep alpine terrain. To better understand the processes driving rock slope degradation, mechanisms contributing to the triggering, transport, and deposition of resulting rock slope instabilities, and mitigation measures for associated hazards, we must develop insight into both the physics of intact and rock mass failure and the dynamics of transport processes. This session aims to bring together state-of-the-art methods for predicting, assessing, quantifying, and protecting against rock slope hazards. We seek innovative contributions from investigators dealing with all stages of rock slope hazards, from weathering and/or damage accumulation, through detachment, transport and deposition, and finally to the development of protection and mitigation measures. In particular, we seek studies presenting new theoretical, numerical or probabilistic modelling approaches, novel data sets derived from laboratory, in situ, or remote sensing applications, and state-of-the-art approaches to social, structural, or natural protection measures.

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Co-organized by GM4
Convener: Michael Krautblatter | Co-conveners: Axel Volkwein, Anne VoigtländerECSECS, Matthew WestobyECSECS, Andreas EwaldECSECS
Displays
| Thu, 07 May, 14:00–15:45 (CEST)
NH3.8

This session covers an overview of the progress and new scientific approaches for investigating landslides using state-of-the-art techniques such as: Earth Observation (EO), close-range Remote Sensing techniques (RS) and Geophysical Surveying (GS).

A series of remarkable technological progresses are driven new scientific opportunities to better understand landslide dynamics worldwide, including integrated information about rheological properties, water content, rate of deformation and time-varying changes of these parameters through seasonal changes and/or progressive slope damage.

This session welcomes innovative contributions and lessons learned from significant case studies and/or original methods aiming to increase our capability to detect, model and predict landslide processes at different scales, from site specific to regional studies, and over multiple dimensions (e.g. 2D, 3D and 4D).

A special emphasis is expected not only on the particularities of data collection from different platforms (e.g. satellite, aerial, UAV, Ground Based...) and locations (e.g. surface- and borehole-based geophysics) but also on new solutions for digesting and interpreting datasets of high spatiotemporal resolution, landslide characterization, monitoring, modelling, as well as their integration on real-time EWS, rapid mapping and other prevention and protection initiatives. Examples of previous submissions include using one or more of the following techniques: optical and radar sensors, new satellite constellations (including the emergence of the Sentinel-1A and 1B), Remotely Piloted Aircraft Systems (RPAS) / Unmanned Aerial Vehicles (UAVs) / drones, high spatial resolution airborne LiDAR missions, terrestrial LIDAR, Structure-from-Motion (SfM) photogrammetry, time-lapse cameras, multi-temporal DInSAR, GPS surveying, Seismic Reflection, Surface Waves Analysis, Geophysical Tomography (seismic and electrical), Seismic Ambient Vibrations, Acoustic Emissions, Electro-Magnetic surveys, low-cost sensors, commercial use of small satellites, Multi-Spectral images, etc. Other pioneering applications using big data treatment techniques, data-driven approaches and/or open code initiatives for investigating mass movements using the above-described techniques will also be very welcomed.

GUEST SPEAKER: this year, we invited professor Jonathan Chambers, team leader of the geophysical tomography cluster at the British Geological Survey (BGS).

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Co-organized by ESSI1/GI6/GM4
Convener: Antonio Abellan | Co-conveners: Janusz Wasowski, Masahiro Chigira, Oriol Monserrat, Jan BurjanekECSECS
Displays
| Wed, 06 May, 08:30–12:30 (CEST)
SSS9.10

According to the Global Wildfire Information System, every year approximately 350 million hectares of land are affected by wildfires. This global phenomenon is responsible for substantial environmental, social and economic losses, which together with land abandonment, droughts, absence of appropriate land management and urban development planning, are expected to aggravate land degradation. In addition, wildfires are becoming a persistent threat, since the fire risk is expected to increase in a context of a warmer and drier climate.
This increased land degradation as a consequence of wildfires has also been highlighted in the latest Climate Change and Land, IPCC special report on climate change, desertification, land degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems. The impacts of wildfires on soils and ecosystems severely affect ecosystem services supply such as raw material and water provisioning, carbon storage, erosion and flood control, and habitat support, which are essential for human life. Therefore, attention of researchers, stakeholders and decision makers worldwide is urgently needed.
The aim of this session is to join researchers that study the effects of wildfires on ecosystems from wildfire prevention to post-fire mitigation. We warmly invite studies that approach:
i. prescribed and/or experimental fires;
ii. fire severity and burn severity;
iii. fire effects on vegetation, soils and water;
iv. post-fire hydrological and erosive response;
v. post-fire management and mitigation;
either by means of laboratory, field experiments, and/or numerical modelling.

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Co-organized by GM4/NH7
Convener: Diana VieiraECSECS | Co-conveners: Jantiene BaartmanECSECS, Marcos FrancosECSECS, Antonio Girona-GarcíaECSECS, Paulo Pereira
Displays
| Wed, 06 May, 16:15–18:00 (CEST)
NH3.7

Landslides are ubiquitous geomorphological phenomena with potentially catastrophic consequences. In several countries, landslide mortality can be higher than that of any other natural hazard. Predicting landslides is a difficult task that is of both scientific interest and societal relevance that may help save lives and protect individual properties and collective resources. The session focuses on innovative methods and techniques to predict landslide occurrence, including the location, time, size, destructiveness of individual and multiple slope failures. All landslide types are considered, from fast rockfalls to rapid debris flows, from slow slides to very rapid rock avalanches. All geographical scales are considered, from the local to the global scale. Of interest are contributions investigating theoretical aspects of natural hazard prediction, with emphasis on landslide forecasting, including conceptual, mathematical, physical, statistical, numerical and computational problems, and applied contributions demonstrating, with examples, the possibility or the lack of a possibility to predict individual or multiple landslides, or specific landslide characteristics. Of particular interest are contributions aimed at: the evaluation of the quality of landslide forecasts; the comparison of the performance of different forecasting models; the use of landslide forecasts in operational systems; and investigations of the potential for the exploitation of new or emerging technologies e.g., monitoring, computational, Earth observation technologies, in order to improve our ability to predict landslides. We anticipate that the most relevant contributions will be collected in the special issue of an international journal.

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Co-organized by GM4
Convener: Filippo Catani | Co-conveners: Xuanmei Fan, Fausto Guzzetti, Binod Tiwari
Displays
| Wed, 06 May, 14:00–15:45 (CEST)
SSS2.9

Restoring degraded landscape, managing soil and water resources are important for human well-being. Hillslope management and bioengineering, reforestation, and torrent control work using transverse structures, such as check dams and more recently open check dams, are becoming more common to mitigate soil erosion and torrential hazards. Such techniques are particularly important as they control the flux of water, sediments, nutrients, and other solutes from headwaters to downstream in any watershed management. The design and criteria of the check dams are also facing challenges due to complex hydrological, geological, and biological processes that affect water and sediment transport over a wide range of spatial and temporal scales. However, there are still lack of long term monitoring and sufficient understanding on the effects of soil and water conservation techniques on soil erosion processes, vegetation restoration, and torrential hazards control. Integrated watershed management also becomes increasingly crucial to mitigate the unprecedented impacts of environmental changes (e.g. climate, land-use changes). In this fourth consecutive year of organizing the session during EGU, we welcome studies that focus on soil conservation techniques from hillslopes to watershed scale. Any contributions to the understanding of soil erosion control and sediment transport management based on detailed field monitoring, high-quality laboratory works, mathematic models and effectiveness assessment methods are welcomed. In particular, we propose an approach to join and share scientific and technical studies from all around the world related to the legacy effects of check-dams and the potential of open check dams, highlighting the role of complex interactions between ecological elements, geomorphic processes and engineering activities.

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Co-organized by GM4/HS13
Convener: Yang YuECSECS | Co-conveners: Peng Li, Manuel Esteban Lucas-Borja, Guillaume PitonECSECS, Demetrio Antonio Zema
Displays
| Tue, 05 May, 08:30–10:15 (CEST)
TS9.1

The consideration of entire “Source to Sink" systems is one of the most recent and challenging advance in earth surface dynamics and sedimentary geology. To understand S2S systems it is necessary to promote and enhance sharing of knowledge and concepts between previously separated disciplines that are involved in the analysis of S2S systems. In particular, studying S2S systems implies knowledge and skills from (1) geomorphology, which focuses on the understanding of erosion processes driving landform evolution and sediment fluxes, (2) stratigraphy/sedimentology, which focuses on the nature of sedimentary deposits and their distribution in time and space, and (3) tectonics and structural geology, which set the dimensions, geometry and dynamics of source/transfer areas and sedimentary basins (the sink). Understanding S2S systems also involves other Geosciences disciplines such as paleoclimatology and geochemistry, because they allow quantifying the factors controlling S2S systems dynamics (climatic controls on erosion, solid vs solute fluxes, etc.). The sedimentary record captures Earth’s environmental evolution through interactions with humans. Developing innovative strategies for shaping a sustainable future and responsible growth requires a holistic understanding of Earth’s resources and our impact on the environment that can be informed by the sedimentary archives.
The aim of this general session is to invite contributions from all S2S-related research fields in order to foster connections around a central theme and kickstart the emergence of a European S2S research community. In addition, we propose to use this session to initiate discussion on developing a strategy for S2S training of early-stage researchers to enable them to address the sedimentary system from source to sink and inform them of potential career opportunities in both the academic and non-academic sectors. We welcome all S2S-related and environmental signal propagation contributions, and in particular those addressing 1) perennial S2S dynamics in response to long-term tectonic and climatic signals in deep time, 2) transient S2S dynamics in response to short-term signals and extreme events, 3) generic S2S models inspired by nature, 4) relationships and feedbacks between human and S2S systems, 5) global to regional scale source-to-sink systems and the economic benefits of thinking in this mindset, and 6) innovative S2S training in academia and industry.

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Co-organized by GM4/SSP3, co-sponsored by IAS
Convener: Francois Guillocheau | Co-conveners: Jean Braun, Charlotte FillonECSECS, Benjamin Gréselle, Tor Somme
Displays
| Fri, 08 May, 08:30–10:15 (CEST)
SSS8.10

The dynamics of the solid Earth and its surface are strongly affected by their interplays as well as biota and climate. These constant feedback systems operate at a variety of spatial and temporal scales that are regulated in a complex system of interactions. For instance, in the critical zone -the terrestrial surface environment ranging from the lower atmosphere to the solid parent material- interplays not only regulate manifold ecosystems and bio-geochemical cycles, but also shape the Earth’s surface at the interface between atmosphere and lithosphere, where soils develop. At much larger scales, plate tectonics and global geodynamics control the physiography, climate and hydrosphere, which in turn strongly affect the surface feedback processes via tectonic, biological, geochemical and hydrological processes. Ultimately, climate and tectonics are prominent macro-ecological drivers of landscape development. But even though the underlying geology and tectonic processes have long been recognized as driving parameters, this is much less so for biological processes. The driving force of microorganisms, plants and animals on the shape of land surfaces is still poorly understood.
Understanding the links between the solid Earth and the external spheres of the Earth has experienced a recent upswing due to advanced analytical techniques, but also thanks to fostered interactions between researchers from different disciplines. This session aims to bring together geoscientists, soil scientists, climatologists and biologists working at different spatial and temporal scales on the feedback interactions between geology, topography, soils, climate and biosphere at the surface of the Earth. The session covers a multitude of topics from the microbial to the geodynamics time and space scales.

Solicited speakers are:
Carina Hoorn, University of Amsterdam, The Netherlands
Alexia Stokes, French National Institute for Agricultural Research – INRA, France
Veerle Vanacker, University of Louvain, Belgium

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Co-organized by BG1/CL4/GD1/GM4/SSP2
Convener: Steffen SeitzECSECS | Co-conveners: Laurent Husson, Annegret LarsenECSECS, Carsten W. Mueller, Pierre Sepulchre, Kirstin ÜbernickelECSECS
Displays
| Fri, 08 May, 08:30–10:15 (CEST)
NH3.1

Large slope instabilities have been recognised in mountainous areas in different lithological and geological domains, and on other planets. Slow to extremely fast moving, complex mass movements have been recognized and sometimes described as strongly interrelated. Many types of slope instabilities can be grouped within this broad class, each presenting different types of hazard and risk. Some major aspects of these slope instabilities are still debated:
- regional distribution and relevance;
- presence, distribution and significance of phenomena on other planets;
- triggering and controlling factors;
- dating of initial movements and reactivation episodes;
- style and state of past and present activity;
- passive and/or active control by structural-tectonic elements;
- hydrological boundary conditions;
- possible evolution and modelling;
- assessment of related hazard;
- influence of anthropogenic factors and effects on structures;
- role on the erosional and sediment yield regime in drainage catchments and mountain belts;
- technologies for monitoring and warning systems, and the interpretation of monitoring data.
Study of these instabilities involves geology, geomorphology, geomechanics, hydro-geochemistry, and geophysics. For landslides on other planets a few of these approaches can be adopted making more difficult the interpretation of the phenomena, the identification of triggerings and controlling factors.
Trenching and drilling can be used for material characterization, recognition of activity episodes, which can be combined with monitoring data for establishing of warning thresholds and systems.
Geophysical survey methods can describe both the geometrical and geomechanical characteristics of the unstable mass. Dating techniques can be applied to determine the age of movements. Modelling can be applied to evaluate instability and failure, triggering (rainfall, seismicity, volcanic eruption, deglaciation), failure propagation, collapse (rock avalanches, debris avalanches and flows), and secondary failures (rockfall, debris flows).
Different hydraulic and hydrologic boundary conditions and hydrochemistry are involved, both at failure and during reactivations. The impacts of such instabilities on structures and human activities can be substantial and of a variety of forms. Furthermore, the local and regional sediment yield could be influenced by the landsliding activity and different landslides (e.g. type, size) can play different roles.

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Co-organized by GM4
Convener: Giovanni Crosta | Co-conveners: Federico Agliardi, Masahiro Chigira, Fabio Vittorio De BlasioECSECS
Displays
| Tue, 05 May, 14:00–18:00 (CEST)
EMRP1.4

Rock deformation at different stress levels in the brittle regime and across the brittle-ductile transition is controlled by damage processes occurring on different spatial scales, from grain scale to fractured rock masse. These lead to a progressive increase of micro- and meso-crack intensity in the rock matrix and to the growth of inherited macro-fractures at rock mass scale. Coalescence of these fractures forms large-scale structures such as brittle fault zones and deep-seated rock slide shear zones. Diffuse or localized rock damage have a primary influence on rock properties (strength, elastic moduli, hydraulic and electric properties) and their evolution across multiple temporal scales spanning from geological times to highly dynamic phenomena as earthquakes, volcanic eruptions and landslides. In subcritical stress conditions, damage accumulation results in brittle creep processes key to the long-term evolution of geophysical, geomorphological and geo-engineering systems.

Damage and progressive failure processes must be considered to understand the time-dependent hydro-mechanical behaviour of faults (e.g. stick-slip vs asesismic creep), volcanic systems and slopes (e.g. slow rock slope deformation vs catastrophic rock slides), as well as the response of rock masses to stress perturbations induced by artificial excavations (tunnels, mines) and static or dynamic loadings. At the same time, damage processes control the brittle behaviour of the upper crust and are strongly influenced by intrinsic rock properties (strength, fabric, porosity, anisotropy), geological structures and their inherited damage, as well as by the evolving pressure-temperature with increasing depth and by fluid pressure, transport properties and chemistry. However, many complex relationships between these factors and rock damage are yet to be understood.

In this session we will bring together researchers from different communities interested in a better understanding of rock damage processes and consequence. We welcome innovative contributions on experimental studies (both in the laboratory and in situ), continuum / micromechanical analytical and numerical modelling, and applications to fault zones, reservoirs, slope instability and landscape evolution, and engineering applications. Studies adopting novel approaches and combined methodologies are particularly welcome.

Invited speakers:
- Brian Collins  (U.S. Geological Survey)
-  Jérôme Aubry  (Ecole Normale Supérieure de Paris)

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Co-organized by GM4/NH3
Convener: Federico Agliardi | Co-conveners: David Amitrano, Marie ViolayECSECS, Christian Zangerl, Lucas Pimienta, Benedikt Ahrens, Carolina GiorgettiECSECS, Marieke RempeECSECS
Displays
| Tue, 05 May, 08:30–12:30 (CEST)

GM5 – Riverine Geomorphology

GM5.1

Fluvial systems cover much of the Earth’s surface; they convey water, sediments, and essential nutrients from the uplands to the sea, intermittently transferring these materials from the river channel to the adjacent floodplain. The routing of sediment and water through the channel network initiates complex process-form interactions as the river bed and banks adjust to changes in flow conditions. Despite their ubiquity, little is known about the landform-driven morphodynamic interactions taking place within the channel that ultimately determine patterns of sedimentation and changes of channel form. Furthermore, an understanding of how these process-form interactions scale with the size of the fluvial system is also currently lacking. Recent technological advances now afford us the opportunity to study and to quantify these process-form interactions in detail across a range of spatial and temporal scales. This session aims to bring together interdisciplinary researchers working across field, experimental, and numerical modelling approaches who are advancing methods and providing new insights into: (i) sediment transport and morphodynamic functioning of fluvial systems, (ii) evaluating morphological change at variable spatial and temporal scales, such as at event vs. seasonal scales, and (iii) investigating the sedimentology of these river systems. We particularly welcome applications which investigate the morphodynamic response of fluvial systems in all types and sizes and we specifically would like to encourage submissions from early career researchers and students.

Public information:
To those authors (or co-authors) who wish to participate in the chat-based session, please prepare yourselves to answer the following question:
- Who are you and what are your research topic and the key message of your research? -

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Co-organized by HS13/SSP3
Convener: László BertalanECSECS | Co-conveners: Joshua Ahmed, Christopher HackneyECSECS, Eliisa Lotsari
Displays
| Mon, 04 May, 08:30–10:15 (CEST)
SSP3.5

Sedimentary features are the result of a complex interplay between the erosion, transport and deposition of grains under the action of a current - unidirectional, oscillatory, combined or multidirectional. Each sedimentary structure represents a palaeo-surface expression, and therefore they contain a record of the geomorphology driven by the flow conditions, provided that one understands how to invert and read this history. Evidence for sedimentary processes have been identified on Earth but also on other planetary bodies, based on observations of geomorphic features and stratigraphy.

Bedforms and other sedimentary features are generated in a wide variety of environments, including: aeolian wind-driven transport, rivers, estuarine, lacustrine and deltaic settings, pyroclastic currents, sub- and pro-glacial environments, shorelines and continental shelves, offshore storms, turbidity currents and subaqueous mass flows, deep-sea currents and extra-terrestrial bodies.

This session will host contributions regarding many aspects of the complex interaction between flow, bedforms and sedimentary structures on Earth and planetary surfaces, from their description to interpretation, and from modelling to experiments to field quantification, with studies ranging across differing spatial and temporal scales, from large-scale organisation patterns down to the grain-scale, as well as the palaeo-dynamic and morphodynamic aspects of control and feedback between flow, sediment transport and bedform evolution, on Earth and on Mars.

The varied contributions from field, laboratory, theoretical, and numerical approaches are intended to advance our knowledge of how to decipher the information contained in terrestrial and extra-terrestrial sedimentary bedforms, and help foster fruitful discussions between sedimentologists, geomorphologists, hydrologists, physicists and all researchers working on understanding bedform dynamics and their sedimentary products.

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Co-organized by GM5/HS13, co-sponsored by IAS
Convener: Anne BaarECSECS | Co-conveners: Maria Azpiroz-ZabalaECSECS, Guilhem Amin DouilletECSECS, Alice Lefebvre, Thaiënne van Dijk, Francesco SaleseECSECS, Steven BanhamECSECS
Displays
| Fri, 08 May, 08:30–10:15 (CEST)
HS9.4

Obtaining quantitative information on the spatial pattern of soil redistribution during storms and on the spatial sources supplying sediment to rivers is required to improve our understanding of the processes controlling these transfers and to design effective control measures. It is also crucial to quantify the transfer or the residence times of material transiting rivers along the sediment cascade, and to reconstruct the potential changes in sources that may have occurred at various temporal scales. During the last few decades, several sediment tracing or fingerprinting techniques have contributed to provide this information, in association with other methods (including soil erosion modelling and sediment budgeting). However, their widespread application is limited by several challenges that the community should address as priorities.
We invite specific contributions to this session that address any aspects of the following:
• Developments of innovative field measurement and sediment sampling techniques;
• Soil and sediment tracing techniques for quantifying soil erosion and redistribution;
• Sediment source tracing or fingerprinting studies, using conventional (e.g. elemental/isotopic geochemistry, fallout radionuclides, organic matter) or alternative (e.g. colour, infrared, particle morphometry) approaches;
• Investigations of the current limitations associated with sediment tracing studies (e.g. tracer conservativeness, uncertainty analysis, particle size and organic matter corrections);
• Applications of radioisotope tracers to quantify sediment transit times over a broad range of timescales (from the flood to the century);
• The association of conventional techniques with remote sensing and emerging technologies (e.g. LiDAR);
• Integrated approaches to developing catchment sediment budgets: linking different measurement techniques and/or models to understand sediment delivery processes.

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Co-organized by GM5
Convener: Olivier Evrard | Co-conveners: Gema Guzmán, Hugh Smith
Displays
| Tue, 05 May, 10:45–12:30 (CEST)

GM6 – Coastal and Submarine Geomorphology

GM6.1

Coastal wetland ecosystems, such as salt marshes, mangroves, seagrass beds and tidal flats, are under increasing pressure from natural and anthropogenic processes shifting climatic conditions, and are declining in area and habitat quality globally. These environments provide numerous ecosystem services, including flood risk mediation, biodiversity provision and climate change mitigation through carbon storage. Hence, the need to get a deeper understanding of processes and interactions in these environments, and how these may be altered by climate change has never been greater. This is the case for ‘managed’, restored wetlands and natural systems alike.
This session will bring together studies of coastal wetland ecosystems across climates and geomorphic settings, to enhance the understanding of ecosystem service provisioning, interactions between hydrodynamics, sediment and ecology, and identify best future management practices. Studies of all processes occurring within coastal wetlands are invited. This includes, but is not exclusive to, sediment dynamics, hydrology, hydrodynamics, biogeochemistry, morphological characterisation, geotechnical analysis, bio-morphodynamics, ecological change and evolution, impact of climate change, sea level rise, anthropogenic and management implications. Multidisciplinary approaches across spatial and temporal scales are encouraged, especially in relation to global climate change. This session aims to enhance our understanding of basic processes governing coastal wetland dynamics and to propose sustainable management solutions for contemporary environmental pressures.

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Co-organized by BG4/HS13/OS2
Convener: Mark Schuerch | Co-conveners: Thorsten BalkeECSECS, Helen BrooksECSECS, Ruth Reef, Christian SchwarzECSECS
Displays
| Fri, 08 May, 16:15–18:00 (CEST)
GM6.2

The world’s deltas and coastal wetlands support over 350 million people, yet account for less than 1% of the Earth’s surface. They protect people and assets from flooding and erosion, are increasingly considered as part of ‘nature-based’ or ‘soft engineered’ flood and erosion protection approaches and support an extensive range of ecosystem services and high levels of biodiversity. Yet coastal wetlands and delta are facing myriad threats due to biodiversity loss, habitat degradation, sea-level rise, subsidence, sediment extraction and compaction, groundwater extraction and modifications of their upstream catchments. Predicting how these sedimentary environments respond to combinations of such drivers (e.g. the changed frequency/magnitude of storm events) requires greater knowledge of their resistive properties at a range of scales, from landform response to extreme events to whole-system response to steadily shifting baselines (e.g. sea level rise).
This session aims to bring together the state-of-the-science knowledge from a range of disciplines (geomorphology, hydrology, ecology, biogeochemical and social sciences). We are committed to supporting early career researchers and this session should be of interest to practitioners working in the field of flood and erosion protection, particularly in the river and coastal context.

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Co-organized by OS2
Convener: Christopher HackneyECSECS | Co-conveners: Rachael CarrieECSECS, Frances DunnECSECS, Iris Moeller, Grigorios VasilopoulosECSECS
Displays
| Mon, 04 May, 16:15–18:00 (CEST)
GM6.3

Examining coastal morphodynamics from the nearshore through to inland dune systems is fundamental in understanding their short- to long-term behaviour. Coastal processes operate across large spatial and temporal scales and therefore comprehending their resulting landforms is complex.

At the coast, dunes provide the physical barrier to flooding during high energy storms, while beaches and nearshore areas help dissipate storm impact through a series of dynamic interactions involving sediment transfers and at times rapid morphological changes. Investigation of complex interactions between these three interconnected systems has become essential for understanding coastal behaviour.

This session, sponsored by the IGU-UGI Commission on Coastal Systems, welcomes contributions from coastal scientists interested in the measurement and modelling of the nearshore 25-0 m zone (waves, currents and sediment transport) and terrestrial coastal processes (on beaches and dunes) and responses within the three sub-units at various scales. The session will highlight the latest research developments in this part of the planet's geomorphic system and facilitate knowledge exchange between the submerged and sub-aerial coastal zones.

Public information:
We will be organising this session into time groupings on the day, with 5 displays in each 20 min slot according to the following order:
GROUP 1: 08:30 - 08:50
1. D986 |EGU2020-7875 Modelling nearshore sediment fluxes in embayed settings over a multi-annual timescale
Nieves Valiente, Gerd Masselink, Robert Jak McCarroll, Andy Saulter, Tim Scott, Daniel Conley, and Erin King
2. D988 | EGU2020-11236 A novel shoreface translation model for predicting future coastal change
Jak McCarroll, Gerd Masselink, Nieves Valiente, Mark Wiggins, Josie-Alice Kirby, Tim Scott, and Mark Davidson
3. D989 | EGU2020-4882 Two centuries of shoreline evolution and storm events in Dundrum Bay, Northern Ireland.
Edoardo Grottoli, Melanie Biausque, Derek W.T. Jackson, and Andrew J. G. Cooper
4. D990 | EGU2020-18730 Characteristics and dynamics of crescentic bar events at an open, Mediterranean beach
Rinse de Swart, Francesca Ribas, Daniel Calvete, Gonzalo Simarro, and Jorge Guillén
5. D991 |EGU2020-11977 Aeolian transport on a wet beach: Field observations from the swash zone
Christy Swann and sarah trimble

GROUP 2: 08:50 - 09:10
6. D992 | EGU2020-17470 Post-storm recuperation as a stepping-stone towards long-term integrated modelling in steep beaches
Katerina Kombiadou, Susana Costas, Dano Roelvink, and Robert McCall
7. D993 | EGU2020-406 Nearshore morphodynamics along the coastline of southern Sweden from detailed surficial mapping and hydrodynamic modelling
Johan Nyberg, Bradley Goodfellow, Jonas Ising, and Anna Hedenström
8. D994 | EGU2020-781 Wave, Tide and Morphological Controls on Embayment Circulation and Headland Sand Bypassing
Erin King, Daniel Conley, Gerd Masselink, Nicoletta Leonardi, Robert McCarroll, Timothy Scott, and Nieves Valiente
9. D995 | EGU2020-1407 Forecast of development of sea coasts on their morphodynamic state according to the results of space images descryption
Ruben Kosyan, Nickolay Dunaev, Tatyana Repkina, and Jose Juanes Marti
10. D996 | EGU2020-3072 Using unmanned aerial vehicle (UAV) photogrammetry for monitoring seasonal changes of barrier island in the southwestern coast of Taiwan
Hui-Ju Hsu, Shyi-Jeng Chyi, Chia-Hung Jen, Lih-Der Ho, and Jia-Hong Chen

GROUP 3: 09:10 - 09:30
11. D997 | EGU2020-4215 The Missing link between beach and clifftop dune – Landscape evolution of the climbing dune in the Feng-Chiue-Sha area of Hengchun Peninsula, Taiwan
Lih-Der Ho, Christopher Lüthgens, Chun Chen, and Shyh-Jeng Chyi
12. D998 | EGU2020-4883 Short-term morphological changes of multiple intertidal bars on macrotidal beaches: from seasonal to storm-scales.
Melanie Biausque, Edoardo Grottoli, Derek Jackson, and Andrew Cooper
13. D999 | EGU2020-2566 Databased simulation and reconstruction of the near shore geomorphological structure and sediment composition of the German tidal flats
Julian Sievers, Peter Milbradt, and Malte Rubel
14. D1000 | EGU2020-5184 The use of a low cost, time-lapse camera for high frequency monitoring of intertidal beach morphology
Emilia Guisado-Pintado and Derek W.T. Jackson
15. D1001 | EGU2020-8059 Longshore variation in coastal foredune growth on a megatidal beach from UAV measurements
Iain Fairley, Jose Horrillo-Caraballo, Anouska Mendzil, Georgie Blow, Henry Miller, Ian Masters, Harshinie Karunarathna, and Dominic Reeve

GROUP 4: 09:30 - 09:50
16. D1002 | EGU2020-8252 Spatial and temporal changes of sediment grain size along Israel’s Mediterranean cliff-dominated beaches
Onn Crouvi, Ran Shemesh, Oded Katz, Amit Mushkin, Navot Morag, and Nadav Lensky
17. D1003 | EGU2020-10010 Environmental change assesments in response to anthropogenic human footprint in the Nalón estuary (Asturias-NW Spain)
Germán Flor-Blanco, Efrén García-Ordiales, Germán Flor, Julio López Peláez, Nieves Roqueñí, and Violeta Navarro-García
18. D1004 | EGU2020-10251 Sedimentary evolution of a bedrock-conditioned incised valley since the Last Glacial Maximum: the Ría de Arousa (NW Spain)
Víctor Cartelle, Soledad García-Gil, Iria García-Moreiras, Castor Muñoz-Sobrino, and Natalia Martínez-Carreño
19. D1005 | EGU2020-10493 Sedimentary conditioning of a rocky strait during the Holocene transgression: Ría de Ferrol (NW Spain)
Soledad García-Gil, Víctor Cartelle, Castor Muñoz-Sobrino, Natalia Martínez-Carreño, and Iria García-Moreiras
20. D1006 | EGU2020-10501 A RANS numerical model for cross-shore beach profile evolution
Julio Garcia-Maribona, Javier L. Lara, Maria Maza, and Iñigo J. Losada

GROUP 5: 09:50-10:10
21. D1007 | EGU2020-11697 Coarse sediment tracing experiment at the Promenade des Anglais (Nice, France)
Duccio Bertoni, Giovanni Sarti, Giacomo Bruno, Alessandro Pozzebon, Rémi Doumasdelage, and Julien Larraun
22. D1008 | EGU2020-13206 Multiple sand bar dynamics in the macrotidal Shinduri beach, west coast of Korea
Tae Soo Chang, Hyun Ho Youn, and Seung Soo Chun
23. D1009 | EGU2020-17932 Empirical modelling of beach evolution: implementation of coupled cross-shore and longshore approaches
Teddy Chataigner, Marissa Yates, and Nicolas Le Dantec
24. D1010 | EGU2020-15230 Landscape drivers of coastal dune mobility
Thomas Smyth, Ryan Wilson, Paul Rooney, and Katherine Yates
25. D1011 | EGU2020-18568 Exploring the role of vegetation and sediment supply to coastal dune states using integrated process-based modelling
Susana Costas, Katerina Kombiadou, and Dano Roelvink

WRAP-UP 10:10 - 10:15

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Co-organized by OS2/SSP3, co-sponsored by CCS
Convener: Derek Jackson | Co-conveners: Emilia Guisado-Pintado, Irene Delgado-Fernandez
Displays
| Fri, 08 May, 08:30–10:15 (CEST)
GM6.4

Coasts worldwide face a great variety of environmental impacts as well as increased anthropogenic pressures of coastal zone urbanization and rapid population growth. Over the last decade coastal erosion has emerged as a widespread problem that causes shoreline retreat and irreversible land losses. The attempts of managers and other stakeholders to cope with erosion using different types of hard engineering methods may often aggravate this problem, damaging natural landscape and coastal ecosystems in unexpected and unpredicted ways. Other negative impacts of human activities on littoral environments are chronic and punctual pollution of beach and coastal sediments with associated health risks for human beings. Chronic pollution is often observed in coastal areas close to factories, industries and human settlements - because of waste water discharges, punctual contamination is often linked to beach oiling.
The session gives priority to the subjects of coastal geomorphology: evolution of coastal landforms, coastal morphodynamics, coastline alterations and various associated processes in the coastal zone, e.g. waves and sediment drift, which shape coastal features and cause morphological changes. Contributions to this session will focus on the mechanisms responsible for coastal erosion and shoreline behaviour (advance or retreat) and will address the many natural and human factors involved. The topics may include work on predictions of shoreline change and discussions on the effects of human activities and their continuing contribution to coastal changes. The session will also cover submissions on coastal vulnerability to the combined effects of natural and human-related hazards, any type of coastal and environmental sensitivity classifications, and risk assessments. Globally, coastal dunes are seriously threatened as people tend to modify landforms and habitats through their actions and regulations, and the session invites also studies on natural and human-induced geomorphological changes of sand dunes, and recent projects and examples of dune eco-restoration and re-building.
Last, but not the least, studies related to Marine Spatial Planning (MSP), including Integrated Coastal Management (ICM), are also welcome. For any MSP and ICM, it is essential to consider the dynamics across the land-sea interface, i.e. the Land-Sea Interactions (LSI) that involve both natural processes and the impact of human activities.

Public information:
We will organize the session in four groups. We stop very shortly on abstracts without displays and spend at least 5 minutes for those with uploaded displays.

GROUP 1: 10:45 - 11:10

1. D1012 | EGU2020-95: “The Future of the World's Sandy Beaches Under a Changing Climate.” Authors: Michalis Vousdoukas, Roshanka Ranasinghe, Lorenzo Mentaschi, Theocharis Plomaritis, and Luc Feyen.

2. D1013 | EGU2020-624: “A Feasibility Investigation for Developing Artificial Beachrocks: A Potential Measure for Coastal Protection in Southeast Yogyakarta Coast, Indonesia.” Authors: Lutfian Rusdi Daryono, Kazunori Nakashima, Satoru Kawasaki, Koichi Suzuki, Anastasia Dewi Titisari, Didit Hadi Barianto, Imam Suyanto, and Arief Rahmadi.

3. D1014D1014 | EGU2020-3174: “Disintegrated coastal zone management (DICZM): an example from Auckland, New Zealand.” Authors: Martin Brook, Alex Palma, Rosemary Garill, Nick Richards, and Jon Tunnicliffe.

4. D1015 | EGU2020-3320: “Enhancing shoreline advance by ploughing the intertidal beach: Physical simulation.” Authors: Erica Pellón, Iñigo Aniel-Quiroga, Mauricio González, and Raúl Medina.

5. D1016 | EGU2020-2124: “Innovative Approach for Addressing Coastal Erosion Protection Using Microbial Induced Carbonate Precipitation.” Authors: Md Al Imran, Kazunori Nakashima, Niki Evelpidou, and Satoru Kawasaki.



GROUP 2: 11:10 - 11:35

6. D1017 | EGU2020-1609: “Controls on coastal overwash morphology in natural and built environments.” Authors: Hannah Williams, Luke Taylor, Evan Goldstein, and Eli Lazarus.

7. D1018 | EGU2020-5716: “Coastal geomorphic response to volcano-tectonic activity in the Campi Flegrei Caldera: new insight from the geoarchaeological study of Portus Julius (Pozzuoli Gulf, Italy).” Authors: Claudia Caporizzo, Pietro Patrizio Ciro Aucelli, Gaia Mattei, Aldo Cinque, Salvatore Troisi, Michele Stefanile, Francesco Peluso, and Gerardo Pappone.

8. D1019 | EGU2020-4628: “Mapping of Coastal Cliff Erosion in Denmark.” Authors: Gregor Luetzenburg, Kristian Svennevig, Anders A. Bjørk, and Aart Kroon.

9. D1020 | EGU2020-11484: “Driving mechanisms of coastal cliff retreat in flysch deposits on the eastern Adriatic coast.” Authors: Goran Vlastelica, Kristina Pikelj, and Branko Kordić.

10. D1021 | EGU2020-20486: “Morphodynamic types of postglacial cliffs of the Southern Baltic.” Authors: Andrzej Kostrzewski, Marcin Winowski, and Zbigniew Zwoliński.



GROUP 3: 11:35 - 12:00

11. D1022 | EGU2020-20386: “Spatial diversity and time variability of erosion and accumulation processes on the unconsolidated cliffs of the Wolin Island (Southern Baltic - Pomeranian Bay).” Authors: Marcin Winowski, Zbigniew Zwoliński, Andrzej Kostrzewski, and Jacek Tylkowski.

12. D1023 | EGU2020-5755: “Geomorphological properties of the island of Hvar beaches (Croatia, Eastern Adriatic Coast).” Authors: Marin Mićunović and Sanja Faivre.

13. D1024 | EGU2020-7140: “Coastal Stability and Micro Morphology; Disturbances due to Human Interventions along West Coast of India.” Authors: Rafeeque Mk, Akhil Thulasidharan, Mintu E George, Suresh Babu Ds, and Prasad Tk.

14. D1025 | EGU2020-1623: “Surface sediments of Richards Bay Harbour, South Africa – potential pollutants (heavy metals, persistent organic pollutants, microplastics) and grainsize distribution.” Authors: Paul Mehlhorn, Marc Humphries, Peter Frenzel, Olga Gildeeva, Annette Hahn, Finn Viehberg, and Torsten Haberzettl.

15. D1026 | EGU2020-7592: “Bank Erosion Processes, Trends and Impacts in a Hypertidal Estuarine System.” Authors: Andrea Gasparotto, Julian Leyland, Stephen Darby, and Paul Carling.


GROUP 4: 12:00 - 12:20

16. D1027 | EGU2020-10272: “The coastal vulnerability of the north-eastern sector of Gozo Island (Malta, Mediterranean Sea).” Authors: Mauro Soldati, George Buhagiar, Anton S. Micallef, Angela Rizzo, and Vittoria Vandelli.

17. D1028 | EGU2020-19785: “A DPSIR analysis of aeolian sand dune mobilization along the coast of Manawatu-Wanganui in New Zealand.” Authors: Dissanayake Mudiyanselage Ruwan Sampath and Joana Gaspar de Freitas.

18. D1029 | EGU2020-11173: “Rapid shifts in the Baltic Sea region climate, detected from the ancient coastal formations and number of other ecosystems – how likely it is to happen again and what are the consequences?” Authors: Sandra Kuusik and Hannes Tõnisson.

19. D1030 | EGU2020-10487: “Aperiodic embayed sandy beach rotation and erosion-risk exposure on a hyper-muddy wave-exposed coast.” Authors: Edward Anthony, Antoine Gardel, Morgane Jolivet, Guillaume Brunier, and Franck Dolique.


WRAP-UP 12:20 - 12:30

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Co-organized by OS2, co-sponsored by CCS - IGU
Convener: Hannes Tõnisson | Co-conveners: Margarita Stancheva, Andreas Baas, Giorgio Anfuso, Guillaume Brunier
Displays
| Fri, 08 May, 10:45–12:30 (CEST)
SSP1.2

Directly observable relative sea-level (RSL) indicators (e.g. shore platforms, coral reef terraces, beach deposits, etc.) are used to constrain paleo sea levels and ice sheet extents and to improve GIA models and future projections of sea-level and ice-sheet responses. Biological proxies associated with and the physical characteristics of RSL indicators can be used to infer paleoclimate and together help inform climatic change and sea-level fluctuations throughout the Pleistocene. The preservation and distribution of these records assists in understanding regional earth surface processes following their deposition.

Recent advances in sea-level studies have called for increased spatiotemporal density of RSL indicators, including submerged and near-field localities, analyzed using standard definitions and methods. This session welcomes contributions to the global record of well-constrained Pleistocene sea-level indicators and associated proxies from a variety of coastal environments, not limited to peak interglacial periods. Re-interpretations of previously described records due to advancement in methods are also welcome.

This session falls within the purview of PALSEA (PALeo constraints on SEA level rise), a PAGES-INQUA Working Group, and the ERC-funded projects, WARMCOASTS and RISeR.

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Co-organized by CL4/GM6
Convener: Deirdre RyanECSECS | Co-conveners: Victor CartelleECSECS, Kim Cohen, Alessio Rovere
Displays
| Wed, 06 May, 08:30–10:15 (CEST)
GM6.7

The ocean floor hosts a tremendous variety of forms that reflect the action of a range of tectonic, sedimentary, oceanographic and biological processes at multiple spatio-temporal scales. Being able to map the form and shape of the seabed and to understand the processes that shape it is a major prerequisite to ocean and coastal management, nature conservation and hazard assessment as well as a key objective of national and international research programmes and IODP expeditions.

High quality seafloor maps are integral to submarine geomorphic investigations. Acoustic remote-sensing technologies (singlebeam, multibeam, sidescan, interferometric and synthetic-aperture sonars), deployed on various platforms, are fundamental to seafloor mapping. In relatively shallow and transparent waters, optical methods such as aircraft and satellite-based remote sensing and LIDAR are being employed with increasing success. Seafloor maps, especially when combined with sub-seafloor and/or seabed measurements, provide an exciting opportunity to integrate the approaches of geomorphology and geophysics, and to extend quantitative geomorphology offshore. 3D seismic reflection data has also given birth to the discipline of seismic geomorphology, which has provided a 4D perspective to continental margin evolution. Innovative processing and classification software, image analysis, machine and deep-learning applications are advancing developments in seabed-recognition techniques.

The aim of this interdisciplinary session is two-fold: (i) to highlight recent advances in seabed mapping and classification, and (ii) to improve the understanding of the causes and consequences of geomorphic processes shaping underwater landscapes, including submarine erosion and depositional processes, submarine landslides, sediment transfer and deformation, volcanic activity, fluid migration and escape, faulting and folding, among others. Contributions to this session can include work from any physiographic region, ranging from shallow coastal settings to abyssal plains and deep-sea trenches. Datasets of any scale, from satellite-predicted depth to ultra-high resolution swath bathymetry, sub-surface imaging and sampling, are anticipated.

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Co-organized by OS4/SSP3, co-sponsored by IAG
Convener: Aaron Micallef | Co-conveners: Markus Diesing, H. Christian Hass, Sebastian Krastel, Alessandra Savini, Maria Judge, Kim Picard, Anne-Cathrin WölflECSECS
Displays
| Wed, 06 May, 14:00–18:00 (CEST)
ITS2.4/HS12.1

This session provides a platform for cross-disciplinary science that addresses the continuum of the river and its catchment to the coastal sea. We invite studies across geographical borders; from the source to the sea including groundwater, and across the freshwater-marine water transition. The session welcomes studies that link environmental and social science, address the impacts of climate change and extreme events, and of human activities on water and sediment quality and quantity, hydromorphology, biodiversity, ecosystem functioning and ecosystem services of River-Sea systems, and that provide solutions for sustainable management of the River-Sea social-ecological system.
We need to fully understand how River-Sea-Systems function. How are River-Sea-Systems changing due to human pressures? What is the impact of processes in the catchment on marine systems function, and vice versa? How can we discern between human-induced changes or those driven by natural processes from climate-induced variability and extreme events? What will the tipping points of socio-ecologic system states be and what will they look like? How can we better characterise river-sea systems from the latest generation Earth observation to citizen science based observatories. How can we predict short and long term changes in River-Sea-Systems to manage them sustainably? What is the limit to which it is possible to predict the natural and human-influenced evolution of River-Sea-Systems? The increasing demand to jointly enable intensive human use and environmental protection in river-sea systems requires holistic and integrative research approaches with the ultimate goal of enhanced system understanding.

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Co-organized by BG4/GM6/NH5/OS2/SSP3, co-sponsored by IAS
Convener: Jana Friedrich | Co-conveners: Debora Bellafiore, Dietrich Borchardt, Andrea D'Alpaos, Michael Rode
Displays
| Mon, 04 May, 14:00–15:45 (CEST)
NH5.5

Coastal areas are vulnerable to ocean, atmospheric and land-based hazards. This vulnerability is likely to be exacerbated in future with, for example, sea level rise, changing intensity of tropical cyclones, increased subsidence (e.g. from groundwater extraction, tectonics), and increasing socio-economic development coupled to coastal squeeze in, particularly, the urbanised low elevation coastal zone. This calls for a better understanding of the underlying physical processes and their interaction with the coast. Numerical models therefore play a crucial role in characterizing coastal hazards and assigning risks to them. Drawing firm conclusions about current and future changes in this environment is challenging because uncertainties are often large, such as coastal impacts of likely and unlikely (also called high-end) sea level changes for the 21st century. Furthermore, studies addressing coastal impacts beyond this century pose new questions regarding the timescale of impacts and adaptation activity. This session invites submissions focusing on assessments and case studies at global and regional scales of potential physical impacts of tsunamis, storm surge, sea level rise, waves, and currents on coasts. We also welcome submissions on near-shore ocean dynamics and also on the socio-economic impact of these hazards along the coast.

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Co-organized by GM6/OS2
Convener: Luke JacksonECSECS | Co-conveners: Joern Behrens, Renske de WinterECSECS, Goneri Le Cozannet, Nicoletta LeonardiECSECS
Displays
| Thu, 07 May, 14:00–15:45 (CEST)
NH5.3

Tsunamis and storm surges pose significant hazards to coastal communities around the world. Geological investigations, including both field studies and modelling approaches, significantly enhance our understanding of these events. Past extreme wave events may be reconstructed based on sedimentary and geomorphological evidence from low and high energy environments, from low and high latitude regions and from coastal and offshore areas. The development of novel approaches to identifying, characterising and dating evidence for these events supplements a range of established methods. Nevertheless, the differentiation between evidence for tsunamis and storms still remains a significant question for the community. Numerical and experimental modelling studies complement and enhance field observations and are crucial to improving deterministic and probabilistic approaches to hazard assessment. This session welcomes contributions on all aspects of paleo-tsunami and paleo-storm surge research, including studies that use established methods or recent interdisciplinary advances to reconstruct records of past events, or forecast the probability of future events.

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Co-organized by GM6/SSP3
Convener: Ed GarrettECSECS | Co-conveners: Dominik Brill, Max Engel, Simon Matthias May, Jessica Pilarczyk
Displays
| Thu, 07 May, 08:30–10:15 (CEST)

GM7 – Glacial, Periglacial and Mountain Region Geomorphology

GM7.1

Present-day glacial and periglacial processes in cold regions, i.e. arctic and alpine environments, provide also modern analogues to processes and climatic changes that took place during the Pleistocene, including gradual retreat or collapse of ice sheets and mountain glaciers, and thawing and shrinking of low-land permafrost. Current geomorphological and glaciological changes in mid-latitude mountain ranges could also serve as a proxy for future changes in high-latitude regions within a context of climate change. Examples are speed-up or disintegration of creeping permafrost features or the relictification of rock glaciers.

For our session we invite contributions that either:
1. investigate present-day glacial and/or periglacial landforms, sediments and processes to describe the current state, to reconstruct past environmental conditions and to predict future scenarios in cold regions; or
2. have a Quaternary focus and aim at enhancing our understanding of past glacial, periglacial and paraglacial processes, also through the application of dating techniques.

Case studies that use a multi-disciplinary approach (e.g. field, laboratory and modelling techniques) and/or that highlight the interaction between the glacial, periglacial and paraglacial cryospheric components in cold regions are particularly welcome.

Keynote lectures:
Britta Sannel (Stockholm): Landscape dynamics in permafrost peatlands - past, present and uncertain future
Clare Boston (Portsmouth): The response of Østre Svartisen icefield, Norway, to 20th/21st Century climate change

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Co-organized by CL4/CR4
Convener: Andreas Kellerer-Pirklbauer | Co-conveners: Natacha Gribenski, Isabelle Gärtner-Roer, Sven Lukas
Displays
| Thu, 07 May, 08:30–10:15 (CEST)
GM7.2

Mountain glaciations provide an invaluable record for past and present climate change. The utilization of this potential is, however, not trivial because of the wide diversity of formerly and currently glaciated mountain ranges. In addition to their dynamic, complex, and interacting geomorphological process-systems, the specific different climatic and glaciological conditions make any subsequent global or intra-hemispheric correlations incredibly challenging. This problem is further enhanced by ongoing specialisation within the scientific community. Working groups primarily focusing on either individual aspects or selected mountain regions often remain somewhat disconnected. Only if significant bridging between specialised research communities is guaranteed, progress with the understanding of the complex interactions within mountain ranges can be achieved.
The primary aim of this session is to evaluate the potential of mountain glaciations records and stimulate further research in this important field of research. Contributions on all relevant aspects of the topic are welcomed, for example: (a) glacial landforms and reconstruction of past glaciers, (b) dating techniques and geochronology compilations, (c) glacier dynamics and palaeoclimatic interpretations, or (d) impacts of ecosystems and human evolution/society. Submissions targeting these connections are specifically encouraged. While we encourage submitting abstracts from all abovementioned topics within the broad field of mountain glaciations, we would like to invite in particular those highlighting the specific conditions of mountain glaciations or addressing the relationship and connections between different of their aspects. To address the diversity of mountain glaciations, contributions from high-, middle-, and low-latitude mountain ranges as well as from continental to maritime regions are all welcomed. The time scale of the session will cover the whole time range from Early Pleistocene glaciations to the LGM and Holocene/modern glaciers.

Solicited talk: Ann Rowan "Accelerating recent mass loss from debris-covered Khumbu Glacier in Nepal, and projected response to climate change by 2200 CE"

The session is a platform for everyone interested in the emerging collaborative research network “The Legacy of Mountain Glaciations” and a related splinter meeting (SMP 1) is scheduled for Wednesday, May 6th at 12.45 in room: 0.51. Please use this opportunity to meet and exchange ideas and expertise.

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Co-organized by CR4/SSP2
Convener: Stefan Winkler | Co-conveners: Lauren KnightECSECS, Giovanni Monegato, Jürgen Reitner
Displays
| Thu, 07 May, 10:45–12:30 (CEST)
CR2.2

Studies of ice extent, volume and dynamics during former glaciations are important for understanding past climates and evolution of the Earth’s surface, and also provide analogies for present-day ice sheets and their subglacial environments. This includes observations of glacial erosion, glacial transport and deposition of sediments, formation of fjords and their relation to ice streams, evidence for migration of ice divides, former locations of subglacial lakes, relations between high geothermal heat flow, basal ice melt and rapid ice flow, and other aspects of paleo glacier extent and behaviour. This session will bring together the interdisciplinary scientific community working on former ice covers from the perspectives of glacial geomorphology, quaternary geology, and numerical modeling. It will provide a forum in which field-based reconstructions and model-based simulations can be compared and contrasted. We particularly welcome contributions that shed light on ancient and more recent glaciations on Earth and their interaction with other components of the Earth System.

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Co-organized by GM7
Convener: Andy EmeryECSECS | Co-conveners: Eef van DongenECSECS, Jorge BernalesECSECS, Elisa MantelliECSECS, April DaltonECSECS, Samuel E. KelleyECSECS, Tom JordanECSECS, Kelly Hogan
Displays
| Tue, 05 May, 14:00–18:00 (CEST)
CR4.1

Glacial landscapes are constantly transforming in response to past and present climate and environmental conditions, e.g. available debris. Especially due to past and present global warming, rapid changes in these landscapes are observed. These changes are associated with transitions from different processual states : glacial – periglacial – paraglacial, and associated morphologies and landforms, including debris- covered glaciers and rock glaciers which are less understood. To unravel and quantify these past and present evolutions, controls and feedbacks, a broad spectrum of methods are available, including geomorphological mapping, dating, remote sensing, geophysics, numerical modelling, climate reconstruction, field observations and more. This session welcomes contributions related to all these methods, concepts and approaches used to investigate glacial-periglacial-paraglacial landscape evolution, controls and feedbacks. We seek abstracts on topics such as:
• conceptual frameworks of the evolution of glaciated landscapes;
• processual studies of glacial, paraglacial and periglacial landscapes across all temporal and spatial scales;
• transitions of glacial to periglacial or paraglacial landforms, and the role of debris cover within these glacier land systems
• geomorphometry of past and presently glaciated landscapes, debris-covered glaciers and rock glaciers.
• Interaction between debris-covered glaciers and the wider land system, for example, in terms of geohazards, erosion, sediment transport, and deposition.

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Co-organized by GM7
Convener: Johannes BuckelECSECS | Co-conveners: Adina Racoviteanu, Evan MilesECSECS, Lindsey Nicholson, Tobias Bolch, Anne VoigtländerECSECS, Jasper Knight, Darren Jones
Displays
| Wed, 06 May, 08:30–12:30 (CEST)
ITS1.10/NH9.27

In this session, we invite contributions to explore diverse experiences with inter- and transdisciplinary research and practice, that is specifically applied in the mountain context. Taking mountains as complex social-ecological systems, they provide a concrete and spatially-defined contexts in which to explore how global change phenomena manifests and how it poses challenges and opportunities for communities and society in general.

Addressing societal concerns, and finding suitable solutions with regards to associated impacts of global change in mountains, requires and inter- and transdisciplinary (IT-TD) approach to research and practice. We invite contributions based on empirical research and/or practical experience with IT-TD, to critically reflect on these practices in the mountains context and learn from experiences that explicitly address societal grand challenges such as (but not limited to) climate change impacts and adaptation, transformations to sustainability, disaster risk reduction, or transitions to low carbon economies. We welcome contributions depicting research experiences in European mountain regions, other mountain regions around the world, as well as contributions from Early Career Researchers.

The session is led and coordinated by the Mountain Research Initiative (MRI) with expectations to be able to draw from this session as inputs for the formulation of future research agendas and coordination of research collaborations in mountain regions, worldwide.

www.mountainresearchinitiative.org

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Co-organized by EOS4/CL4/CR7/GM7
Convener: Carolina Adler | Co-convener: Aino Kulonen
Displays
| Mon, 04 May, 14:00–15:45 (CEST)
ITS5.9/EOS4.14

World-wide an increasing number of research projects focus on the challenges associated with changes in the Arctic regions. Whereas these often have a natural and physical science focus, this session focuses on trans-disciplinary approaches to study the multiple phenomena associated with global warming, especially but not exclusively in Arctic regions. Another focus is to understand better how to tackle these in large, trans-disciplinary research projects, initiatives and programs (e.g. HORIZON2020 Nunataryuk, INTAROS and the T-MOSAIC program of the International Arctic Research Council, NSF Navigating the New Arctic), as well as communicating results effectively to the public in terms of outreach and education. Contributions are invited, but are not limited, to the following themes:
• science communication, education and outreach tools, and co-production of knowledge
• integration of social and natural science approaches
• indigenous and collaborative approaches to adaptation and mitigation, equitable mitigation, and risk perception
• socio-economic modelling in relation to Arctic environmental change,
• examining the impacts of permafrost thaw and other phenomena on health and pollution as well as infrastructure (and consequences of the built environment).

One of the aims of this session is to bring together researchers from both social and natural sciences who are involved or interested in reaching out to stakeholders and the general public, and share successful experiences. Examples from past, ongoing and future initiatives that include traditional indigenous knowledge and scientific tools and techniques are welcome.

This session merged from

ITS5.9/EOS4.14
Trans-disciplinary aspects of researching permafrost thaw: science communication, integration, monitoring, modelling and risk perception
Co-organized by CL4/CR4/GM7/HS12/NH9
Convener: Peter Schweitzer | Co-conveners: Annett Bartsch, Susanna Gartler

EOS4.1
Where human and natural systems meet: promoting innovative tools for Arctic outreach and education
Convener: Terenzio zenone | Co-conveners: Frederic Bouchard, Stein Sandven, Ylva Sjöberg, Donatella zona

CR4.5
Towards collaborative frameworks for permafrost research that incorporate northern principles: challenges and opportunities
Convener: Peter Morse | Co-conveners: Ryley Beddoe, Hugh O'Neill, Ashley Rudy, Greg Sieme

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Co-organized by CL4/CR4/GM7/HS12/NH9
Convener: Peter Schweitzer | Co-conveners: Susanna GartlerECSECS, Annett Bartsch, Terenzio zenone, Frederic Bouchard, Stein Sandven, Donatella Zona, Ylva Sjöberg
Displays
| Fri, 08 May, 08:30–10:15 (CEST)
SSP3.21

Bedrock depressions are common features of past and modern glacial landscapes. They are often referred to as overdeepenings and act as important terrestrial archives. Which processes control the formation and geometry of glacial overdeepenings? How did they evolve over time? Which chronological and environmental information can be derived from the sedimentary record? These are the questions that will be addressed in this session.

The timing, extent and driving mechanisms for the last major glacial cycle are increasingly better understood but remain poorly constrained for previous cycles. The early conceptual models, initially adopted to understand older glaciations, neglected much of the spatial and temporal complexity of glaciations. Furthermore, they suffered from a lack of constraining data, which is mainly due to the surficial incompleteness of the terrestrial records.
Some of these limitations may be overcome by studying the sedimentary infill of subglacially formed basins. It is generally accepted that glacial processes, supported by subglacial water, have carved these overdeepenings. However, considerable uncertainties remain concerning the erosional mechanisms and physical constraints.
The sedimentary record in overdeepenings is diverse, including glacial, glacio-lacustrine and fluvial sediments. Investigated records suggest that many overdeepened basins contain a multi-cycle infilling and erosion history. Overdeepenings may therefore act as sediment storages on the timescale of several glacial-interglacial cycles, and provide a valuable record of a landscape’s glacial history. The combination of sedimentological, geophysical, and chronological methods together with the application of landscape evolution models provides new insights into the development of these bedrock features and allows constraining the environmental conditions in the geological past.

This session shall stimulate discussions concerning the formation of subglacial depressions and that aim at deciphering the sedimentary fill of overdeepenings. Contributions may include investigations based on field observations and/or modelling of modern, Quaternary and pre-Quaternary glacial settings. Possible topics cover: (a) glacial and interglacial stratigraphic successions preserved in overdeepenings, (b) subglacial erosion and deposition, (c) glaciation chronology, and (d) landscape evolution.

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Co-organized by CR4/GM7, co-sponsored by IAS
Convener: Michael SchwenkECSECS | Co-conveners: Marius BuechiECSECS, Thomas BurschilECSECS, Urs Fischer, Bernhard Salcher
Displays
| Mon, 04 May, 10:45–12:30 (CEST)

GM8 – Aeolian and Dryland Geomorphology

GM8.1

Arid to sub-humid regions contribute ca. 40 % to the global land surface and are home of more than 40 % of the world’s population. During prehistoric times many important cultures had developed in these regions. Due to the high sensitivity of dryland areas even to small-scale environmental changes and anthropogenic activities, ongoing geomorphological processes but also the Late Quaternary palaeoenvironmental evolution as recorded in sediment archives are becoming increasingly relevant for geomorphological, palaeoenvironmental and geoarchaeological research. Dryland research is also boosted by methodological advances, and especially by emerging linkages with other climatic and geomorphic systems that allow using dryland areas as indicator-regions of global environmental change.
This session aims to pool contributions from the broad field of earth sciences that deal with geomorphological processes and different types of sediment archives in dryland areas (dunes, loess, slope deposits, fluvial sediments, alluvial fans, lake and playa sediments, desert pavements, soils, paleosols etc.) at different spatial and temporal scales. Besides case studies from individual regions and archives, methodical and conceptual contributions, e.g. dealing with the special role of eolian, fluvial, gravitational and biological processes in dryland environments, their preservation over time in the sedimentary records, and emerging opportunities and limitations to resolve past and current dynamics, are especially welcome in this session.

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Co-organized by CL4/SSP2
Convener: Hans von Suchodoletz | Co-conveners: Markus Fuchs, Joel Roskin, Abi Stone, Lupeng Yu
Displays
| Fri, 08 May, 10:45–12:30 (CEST)
AS3.8

The interactions between aerosols, climate, and weather are among the large uncertainties of current atmospheric research. Mineral dust is an important natural source of aerosol with significant implications on radiation, cloud microphysics, atmospheric chemistry and the carbon cycle via the fertilization of marine and terrestrial ecosystems.
In addition, properties of dust deposited in sediments and ice cores are important (paleo-)climate indicators.

This interdivision session is open to contributions dealing with:
(1) measurements of all aspects of the dust cycle (emission, transport, deposition, size distribution, particle characteristics) with in situ and remote sensing techniques,
(2) numerical simulations of dust on global and regional scales,
(3) meteorological conditions for dust storms, dust transport and deposition,
(4) interactions of dust with clouds and radiation,
(5) influence of dust on atmospheric chemistry,
(6) fertilization of ecosystems through dust deposition,
(7) any study using dust as a (paleo-)climate indicator including investigations of Loess, ice cores, lake sediments, ocean sediments and dunes.

We especially encourage to submit papers on the integration of different disciplines and/or modeling of past, present and future climates.

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Co-organized by BG1/CL4/GM8/SSP3, co-sponsored by ISAR
Convener: Jan-Berend Stuut | Co-conveners: Paola Formenti, Joanna Nield, Claire Ryder, Mingjin TangECSECS
Displays
| Fri, 08 May, 10:45–12:30 (CEST)

GM9 – Volcanic and Tectonic Geomorphology

GM9.1

The coupling between tectonics, climate and surface processes governs the dynamics of mountain belts and basins. First order constraints on this coupling are provided by geomorphic and sedimentary records, including longitudinal river profiles, fluvial terraces, downstream fining trends, growth strata, sediment provenance, sequence stratigraphy, and changing depositional environments. Moreover, the increasing integration of geochronological methods for quantifying erosion rates and source-to-sink sediment transfer with landscape evolution, stratigraphic, climatic, and tectonic models allows to advance our understanding of the interactions between surface processes, climate and tectonic deformation.

We invite contributions that use geomorphic and/or sedimentary records to understand tectonic deformation, climate histories, and surface processes, and welcome studies that address their interactions and couplings at a range of spatial and temporal scales. In particular, we encourage coupled catchment-basin studies that take advantage of numerical/physical modelling, geochemical tools for quantifying rates of surface processes (cosmogenic nuclides, low-temperature thermochronology, luminescence dating) and high resolution digital topographic and subsurface data. We also encourage field or subsurface structural and geomorphic studies of landscape evolution, sedimentary patterns and provenance in deformed settings, and invite contributions that address the role of surface processes in modulating rates of deformation and tectonic style, or of tectonics modulating the response of landscapes to climate change.

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Co-organized by TS9
Convener: Dirk Scherler | Co-conveners: Anneleen Geurts, Duna Roda-BoludaECSECS, Alex Whittaker
Displays
| Tue, 05 May, 10:45–12:30 (CEST), Tue, 05 May, 14:00–15:45 (CEST)
TS7.10

Orogenic plateaus and their margins are integral parts of modern mountain ranges and offer unique opportunities to study the feedback between tectonics and climate through the Earth’s surface. Complex interactions and feedbacks occur among a wide range of parameters, including crustal and deep-seated deformation, basin growth, uplift, precipitation and erosion, landscape and biological change; and lead to (i) the growth, recycling, and destruction of the lithosphere; (ii) shifts in surface elevation; and (iii) high topography that can affect atmospheric circulation. These controlling factors result in plateau lateral growth and its characteristic morpho-climatic domains: humid, high-relief margins that contrast with (semi-)arid, low-relief plateau interiors.

This session aims at creating a discussion forum on the complex interactions and feedbacks among climatic, surficial and geodynamic processes that challenge the notion of a comprehensive mechanism for surface uplift and topographic growth in orogenic plateaus and their margins. To fuel the exchange, we welcome studies of orogenic plateaus worldwide at various scales, from the Earth’s mantle and crust to its surface and atmosphere. We particularly encourage contributions that aim at bridging temporal and spatial gaps between datasets using an interdisciplinary approach or novel techniques.

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Co-organized by CL4/GD5/GM9/SSP1
Convener: David Fernández-BlancoECSECS | Co-conveners: Maud J.M. Meijers, Alexander RohrmannECSECS, Flora BajoletECSECS
Displays
| Wed, 06 May, 14:00–15:45 (CEST)
TS10.3

Geologic processes are generally too slow, too rare, or too deep to be observed in-situ and to be monitored with a resolution high enough to understand their dynamics. Analogue experiments and numerical simulation have thus become an integral part of the Earth explorer's toolbox to select, formulate, and test hypotheses on the origin and evolution of geological phenomena.

To foster synergy between the rather independently evolving experimentalists and modellers we provide a multi-disciplinary platform to discuss research on tectonics, structural geology, rock mechanics, geodynamics, volcanology, geomorphology, and sedimentology.

We therefore invite contributions demonstrating the state-of-the-art in analogue and numerical / analytical modelling on a variety of spatial and temporal scales, varying from earthquakes, landslides and volcanic eruptions to sedimentary processes, plate tectonics and landscape evolution. We especially welcome those presentations that discuss model strengths and weaknesses, challenge the existing limits, or compare/combine the different modelling techniques to realistically simulate and better understand the Earth's behaviour.

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Co-organized by GD10/GM9
Convener: Frank ZwaanECSECS | Co-conveners: Fabio CorbiECSECS, Ágnes KirályECSECS, Valentina Magni, Michael Rudolf
Displays
| Mon, 04 May, 10:45–12:30 (CEST)
TS12.1

Plate tectonic processes and associated rates of deformation can be quantified using geomorphological and sedimentary evidence in actively deformed landscapes. A variety of geomorphic markers (e.g., topography and rivers, fluvial deposits, marine terraces) and sedimentary archives (e.g., syntectonic sedimentation, stratigraphic evidence) can be used to constrain rates and dates of tectonic deformation and its processes. Any of these and their combinations, when used in key natural laboratories at adequate time spans, can provide essential clues to understand the tectonic activity and large-scale geodynamic evolution of tectonic plates, and unravel the dynamic changes and tip-points in plate boundary conditions.

We invite contributions that aim to understand the dynamics and evolution of active plate boundaries and deforming plate interiors through geomorphic and/or sedimentary evidence. We welcome all types of studies regardless of their methodology, and especially interdisciplinary efforts, that use geomorphic and sedimentary records to quantify the rates of active deformation and tectonic events, at key sites and across various spatial and temporal scales.

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Co-organized by GD6/GM9/SSP1
Convener: Gino de GelderECSECS | Co-conveners: Lucilla Benedetti, David Fernández-BlancoECSECS, Martine Simoes
Displays
| Thu, 07 May, 10:45–12:30 (CEST)

GM10 – Geomorphology and Climate

ITS2.3/CL1.19

The Ancient Silk Road was one of the most important passages for trans-Eurasia exchange and human migration, which witnessed the rise and fall of ancient civilizations in Central Eurasia. In the central part of the Ancient Silk Road, where the climate condition is extremely dry and the ecosystem is very fragile. The climate and environment changes, especially the water resources change in this area, can significantly influence the spatio-temporal distribution of Ancient Silk Road network, the trans-Eurasia exchange and human migration along the Ancient Silk Road, and the civilization evolution of these ancient cities and towns among the Ancient Silk Road network. This session aims to explore the history of trans-Eurasia exchange, human migration, Ancient Silk Road network spatial change, civilization evolution and climate and environment change, as well as relationship among them in the areas along the Ancient Silk Road. We welcome presentations concerning these issues from multi-disciplinary perspectives, to promote the advancements of research in the field.

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Co-organized by GM10/SSP1
Convener: Juzhi Hou | Co-conveners: Jianhui Chen, Guanghui Dong, Xiaoyan Yang, Haichao XieECSECS
Displays
| Mon, 04 May, 08:30–10:15 (CEST)
SSP1.9

What role did climate dynamics play in human evolution, the dispersal of Homo sapiens within and beyond the African continent, and key cultural innovations? Were dry spells, stable humid conditions, or rapid climate fluctuations the main driver of human evolution and migration? In order to evaluate the impact that different timescales and magnitudes of climatic shifts might have had on the living conditions of prehistoric humans, we need reliable and continuous reconstructions of paleoenvironmental conditions and fluctuations from the vicinity of paleoanthropological and archaeological sites. The search for the environmental context of human evolution and mobility crucially depends on the interpretation of paleoclimate archives from outcrop geology, lacustrine and marine sediments. Linking archeological data to paleoenvironmental reconstructions and models becomes increasingly important.

As a contribution towards a better understanding of these human-climate interactions the conveners encourage submission of abstracts on their project’s research on (geo)archaeology, paleoecology, paleoclimate, stratigraphy, and paleoenvironmental reconstructions. We especially welcome contributions offering new methods for dealing with difficult archive conditions and dating challenges. We hope this session will appeal to a broad audience by highlighting the latest research on paleoenvironmental reconstructions in the vicinity of key sites of human evolution, showcasing a wide variety of analytical methods, and encouraging collaboration between different research groups. Conceptual models, modelling results and model-data comparisons are warmly welcomed, as collaborative and interdisciplinary research.

Keynote speaker:

Prof. Dr. Andrew Cohen (University of Arizona) will talk on:
Continental scientific drilling: A game changer for understanding ecosystem evolution in Africa.

Dr. Annette Hahn (MARUM, University of Bremen) will talk on:
Driving forces of southern African hydroclimate: integrating source to sink and multi-archive studies.

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Co-organized by GM10
Convener: Verena E. FoersterECSECS | Co-conveners: Annett Junginger, Inka MeyerECSECS, Janina Bösken, Christian ZeedenECSECS
Displays
| Fri, 08 May, 08:30–12:30 (CEST)

GM11 – Planetary Geomorphology

GM11.1

Planetary Geomorphology aims to bring together geomorphologists who study the Earth with those who work on other bodies such as Mars, Venus, Mercury, the Moon, icy satellites of the outer solar system, comets, and/or asteroids. Studies applicable to landscapes on any scale on any solid body are welcome. We particularly encourage those who use Earth analogues or laboratory/numerical simulation to submit their work. Considered processes could include aeolian, volcanic, tectonic, fluvial, glacial, periglacial, or "undetermined" ones. We especially welcome contributions from early-career scientists and geomorphologists who are new to planetary science. This year our invited speaker Michelle Koutnik will talk about the general theme of ice preservation and landscape erosion during glacial retreat on Earth and Mars.

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Co-organized by PS4, co-sponsored by IAG
Convener: Susan Conway | Co-conveners: Stephen BroughECSECS, Frances E. G. ButcherECSECS, Tjalling de Haas, Nikolaus J. Kuhn
Displays
| Wed, 06 May, 14:00–15:45 (CEST)
PS4.2

With three rover launches scheduled in 2020, another giant leap in Mars exploration is expected in the next decade. In this session, we welcome contributions about lessons learned from past/current missions, terrestrial analog studies, laboratory experiments and modelling as well as future exploration and prospects.

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Co-organized by GM11
Convener: Jessica Flahaut | Co-conveners: Benjamin Bultel, Xiao Long, Arianna Piccialli, Agata KrzesinskaECSECS
Displays
| Mon, 04 May, 08:30–12:30 (CEST)

GM12 – Geomorphology, People and Heritage

GM12.1

Geodiversity, including surface and subsurface phenomena, objects and processes, reflects the current state of abiotic nature on the Earth. For this purpose, various methods of assessing geodiversity are used, from through mapping to simultaneous monitoring of dynamic elements of the geographical environment.
- Traditionally, rich descriptions of single variables and a static image of geodiversity is obtained through mapping, which registers the current face of the Earth.
- Another solution is a simultaneous record and/or multitemporal assessment of geodiversity through monitoring systems of key environmental elements, including satellite monitoring and geomatics techniques. This approach makes it possible to track changes in geodiversity at different time intervals and thus gain information on dynamic geodiversity.
For both static and dynamic geodiversity, it is essential to choose the right variables and approach that will best reflect the nature of both types of geodiversity as well as will be relevant for issues related to the services offered by geodiversity. Identifying these Essential Geodiversity Variables (EGVs, sensu Schrodt et al. 2019) as geoindicators is the main task of this session.
The large amount of available geoindicators makes it difficult to identify those that would comprehensively meet the expectations of specialists from various disciplines involved in the geodiversity assessment. Nevertheless, geodiversity is now recognized as highly relevant to both scientific and management issues related to Earth surface processes and landscape evolution and an effort for improved EGVs selection should be made. Our EGVs perspective is to contribute to the establishment of a Driver-Pressure-State-Impact-Response (DPSIR) framework associated to environmental issues related to global change, ecosystem services and geoheritage.
This session invites scientific oral and poster contributions on geodiversity in context of geoheritage of natural and cultural landscapes.
The joint session is organized by the IAG Working Group on Landform Assessment for Geodiversity and the IAG Working Group on Geomorphological Sites.

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Co-organized by EOS6, co-sponsored by APG and IAG
Convener: Zbigniew Zwoliński | Co-conveners: Irene BollatiECSECS, Paola Coratza, Marco Giardino, Franziska SchrodtECSECS
Displays
| Wed, 06 May, 08:30–10:15 (CEST)
ITS2.2/GM12.5

Documenting the diversity of human responses and adaptations to climate, landscapes, ecosystems, natural disasters and the changing natural resources availability in different regions of our planet, cross-disciplinary studies in human-landscape interaction provide valuable opportunities to learn from the past. This session is targeted at providing a platform for scientists with common interests in geomorphology and geoarchaeology and, in particular, the complex and integrated nature of the relationship between landforms, geomorphological processes and societies during the Anthropocene, and how this has developed over time at different spatial and temporal scales.

This session seeks related interdisciplinary papers and specific geomorphological or geoarchaeological case-studies that deploy various approaches and tools to address the reconstruction of former and present human-environmental interactions from the Palaeolithic period through the modern. Topics related to records of the Anthropocene from Earth and archaeological science perspectives are welcome. We are inviting contributions that focus on the two-way interactions between geomorphological processes/landforms and human activity. These should show how the various factors of the physical environment interact with the Anthroposphere, and, in turn, how population and individuals may affect (and change) these factors. Furthermore, contributions may include (but are not limited to) insights about how people have coped with environmental disasters or abrupt changes; defining sustainability thresholds for farming or resource exploitation; distinguishing the baseline natural and human contributions to environmental changes. In this context, topics of different fields may be addressed in the session such as landform evolution, landscape sensitivity and resilience in the overall context of the interrelation between geomorphology and society, geohazards, geoheritage and conservation, geomorphological responses to (and evidence for) environmental change, and applied geomorphology. Moreover, issues of scale and hierarchies may be addressed, and methods and applications of dynamic rather than equilibrium ideas and metaphors. Ultimately, we would like to understand how strategies of human resilience and innovation can inform our modern strategies for addressing the challenges of the emerging Anthropocene, a time frame dominated by human modulation of surface geomorphological processes and hydroclimate.

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Co-organized by BG3/CL4/NH8/SSP1/SSS3
Convener: Julia MeisterECSECS | Co-conveners: André Kirchner, Guido Stefano MarianiECSECS, Kathleen Nicoll, Hans von Suchodoletz, Sanja Faivre, Sven Fuchs, Margreth Keiler
Displays
| Mon, 04 May, 14:00–18:00 (CEST)
ITS2.17/SSS12.2

Human interaction with the environment has gone through several stages of evolution. Being a product of the natural evolution of living organisms in the biosphere, Homo sapiens as a species has evolved in the geochemical conditions of the virgin biosphere. The rapid development of intellectual abilities of this genus allowed, first, to survive in adverse environmental conditions around the whole world, then, to cultivate the land, transform the entire system of biocenoses, and now to create a new habitat for man exclusively. The result was a significant geochemical transformation of the virgin biosphere, but a kind of punishment for the achieved progress was the emergence of a number of endemic diseases of a geochemical nature. Nowadays a variety of anthropogenic sources of pollution and their location in various natural geochemical conditions require not only constant monitoring of the chemical state of soil, water, air and food products, but also the development of spatially differentiated approaches to assessing the risk of provoked diseases. To solve this problem it is necessary concertedly interpreting a geochemical and medical information in order to assess the risks to human health associated with modern natural and anthropogenic geochemical features in urban and rural habitats. During session we propose to discuss:
1) global trends of health transformation in new geochemical environment of modern noosphere;
2) criteria for determining pollution level depending on environmental and geochemical constrains;
3) new approaches to assess the risk of diseases of geochemical nature in different countries;
4) the problem of mapping the risk zones, related to negative medical effects due to deficiency or excess of certain chemical elements or compounds.
Session co-sponsored by the European Association of Geochemistry.

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Co-organized by EOS4/AS4/BG2/GM12/GMPV10/HS13/NH9, co-sponsored by EAG
Convener: Elena Korobova | Co-conveners: Maria Manuela Abreu, Jaume Bech, Glenda Garcia-Santos, Liudmila KolmykovaECSECS, Virginia Aparicio, Manfred Sager
Displays
| Tue, 05 May, 14:00–18:00 (CEST)
GI2.8

The session gathers geoscientific aspects such as dynamics, reactions, and environmental/health consequences of radioactive materials that are massively released accidentally (e.g., Chernobyl and Fukushima nuclear power plant accidents, wide fires, etc.) and by other human activities (e.g., nuclear tests).

The radioactive materials are known as polluting materials that are hazardous for human society, but are also ideal markers in understanding dynamics and physical/chemical/biological reactions chains in the environment. Thus, the radioactive contamination problem is multi-disciplinary. In fact, this topic involves regional and global transport and local reactions of radioactive materials through atmosphere, soil and water system, ocean, and organic and ecosystem, and its relation with human and non-human biota. The topic also involves hazard prediction and nowcast technology.

By combining 34 years (> halftime of Cesium 137) monitoring data after the Chernobyl Accident in 1986, 9 years dense measurement data by the most advanced instrumentation after the Fukushima Accident in 2011, and other events, we can improve our knowledgebase on the environmental behavior of radioactive materials and its environmental/biological impact. This should lead to improved monitoring systems in the future including emergency response systems, acute sampling/measurement methodology, and remediation schemes for any future nuclear accidents.

The following specific topics have traditionally been discussed:
(a) Atmospheric Science (emissions, transport, deposition, pollution);
(b) Hydrology (transport in surface and ground water system, soil-water interactions);
(c) Oceanology (transport, bio-system interaction);
(d) Soil System (transport, chemical interaction, transfer to organic system);
(e) Forestry;
(f) Natural Hazards (warning systems, health risk assessments, geophysical variability, countermeasure);
(g) Measurement Techniques (instrumentation, multipoint data measurements);
(h) Ecosystems (migration/decay of radionuclides).

The session consists of updated observations, new theoretical developments including simulations, and improved methods or tools which could improve observation and prediction capabilities during eventual future nuclear emergencies. New evaluations of existing tools, past nuclear contamination events and other data sets also welcome.

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Co-organized by AS4/BG1/ERE4/GM12/NH9
Convener: Daisuke Tsumune | Co-conveners: Nikolaos Evangeliou, Yasunori IgarashiECSECS, Liudmila KolmykovaECSECS, Masatoshi Yamauchi
Displays
| Fri, 08 May, 10:45–12:30 (CEST)
NH9.3

This session aims at a better understanding of the vulnerability of the built environment (building envelop, building content and infrastructure) to different types of natural hazards. The main focus herein is to present different models and approaches to bridge the gap between ex-post loss and damage assessment and ex-ante predictive models. Studies on loss, damage and vulnerability often address different scales and spatial patterns obstructing the comparison and transfer of results and methods. Moreover, although existing models (matrices, indices and functions) demonstrate high variance, analysis of the associated uncertainties remains fragmentary. We invite contributions addressing vulnerability, loss and damage assessment and we provide a platform for scientific exchange and implementation for successful disaster risk reduction strategies focusing on building back better, mitigation and adaptation.

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Co-organized by GM12
Convener: Maria Papathoma-Koehle | Co-conveners: Sven Fuchs, Margreth Keiler
Displays
| Fri, 08 May, 14:00–15:45 (CEST)
NH9.11

This session addresses knowledge exchange between researchers, the public, policy makers, and practitioners about natural hazards. Although we welcome all contributions in this topic, we are particularly interested in: (i) The communication (by scientists, engineers, the press, civil protection, government agencies, and a multitude other agencies) of natural hazards risk and uncertainty to the general public and other government officials; (ii) Approaches that address barriers and bridges in the science-policy-practice interface that hinder and support application of hazard-related knowledge; (iii) The teaching of natural hazards to university and lower-level students, using innovative techniques to promote understanding. We also are specifically interested in distance education courses on themes related to hazard and risk assessment, and disaster risk management, and in programmes for training in developing countries. We therefore solicit abstracts, particularly dynamic posters, on all aspects of how we communicate and educate the better understanding of natural hazards. We plan on having a PICO session to ensure a lively combination of discussion and poster presentation.

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Co-organized by EOS7/GM12/HS13/SM3
Convener: Joel GillECSECS | Co-conveners: Bruce D. Malamud, Alison SneddonECSECS, Adam D. Switzer, Faith TaylorECSECS
Displays
| Wed, 06 May, 16:15–18:00 (CEST)

GM13 – Karst and Cave Geomorphology

CL1.26

Speleothems and continental carbonates (e.g. travertines, anthropogenic travertines, subglacial and cryogenic carbonates) are important continental archives, which can provide precisely dated, high-resolution records of past environmental and climate changes across all climate zones. This session aims to showcase the most recent developments and findings related to analytical developments, process understanding, and new records on annual, seasonal, sub- and orbital timescales. In this session, contributions are particularly welcome on: (1) monitoring of soil and cave systems in order to improve understanding of the speleothem and continental carbonate archive; (2) high-resolution orbital and sub-orbital palaeoclimate reconstructions on Quaternary timescales and longer; (3) new and novel techniques as well as methodological developments as applied to speleothems and continental carbonates; (4) interdisciplinary approaches that combine speleothem and/or continental carbonate records with other proxy archives and/or modelling.

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Co-organized by GM13
Convener: Gina E. Moseley | Co-conveners: Andrea Borsato, Jens Fohlmeister, Gabriella KoltaiECSECS, Franziska LechleitnerECSECS
Displays
| Mon, 04 May, 08:30–10:15 (CEST)
HS8.2.6

Karst environments are characterized by distinctive landforms and unique hydrologic behaviors. Karst systems are commonly extremely complex, heterogeneous, and very difficult to manage because their formation and evolution are controlled by a wide range of geological, hydrological, geochemical and biological processes. Further, karst systems are extremely vulnerable due to the direct connection between the surface and subsurface compartments through conduit networks. The great variability and unique connectivity may result in serious engineering problems: on one hand, karst groundwater resources are readily contaminated by pollution because of the rapidity of conduit flow; on the other hand, the presence of karst conduits that weak