Plenary geomorphology division session and ECS award lecture. This session will consist of the Geomorphology Early Career Scientist Award winner’s lecture, talks from the GM OSPP winners, and additional invited talks.

This is a poster-only session that welcomes contributions about any topic related to geomorphology. If you do not find a GM session that is a good fit for your abstract, this is the place for you. We also particularly welcome contributions about the discipline of geomorphology in general, history of science analyses, interdisciplinary research, career pathways and opportunities, equality-diversity-inclusion (EDI) stories, educational and outreach topics.

Mountain environments are dynamic systems shaped by interconnected physical, biological, and chemical processes. Recent changes in climate, including elevation-dependent warming, shifting precipitation patterns, retreating glaciers, degrading permafrost and intensifying storms are reshaping these critical landscapes. These changes have a direct impact on ~35% of the global population, who live and work within or downstream of these regions. To address this complex, global challenge, this session aims to explore the diverse problems and approaches to monitoring, modelling, and predicting environmental change. It is essential to draw upon perspectives across the physical sciences to reduce uncertainties around future compounding hazard and risk. We welcome contributions focused on mountain system dynamics through, for example, remote sensing, numerical modelling, laboratory techniques, and field observations. This session is closely related to the objectives of the ‘Sediment Cascades and Climate Change (1)’ initiative and encourages an interdisciplinary dialogue between and beyond the fields of climatology, hydrology, sedimentology, and geomorphology.
(1) https://sedimentcascades.webspace.durham.ac.uk/

Our planet is shaped by a multitude of physical, chemical and biological processes. Most of these processes and their effect on the ground’s properties can be sensed by seismic instruments – as discrete events or continuous signatures. Seismic methods have been developed, adopted, and advanced to study those dynamics at or near the surface of the earth, with unprecedented detail, completeness, and resolution. The community of geophysicists interested in Earth surface dynamics and geomorphologists, glaciologists, hydrologists, volcanologists, geochemists, biologists or engineering geologists interested in using arising geophysical tools and techniques is progressively growing and collaboratively advancing the emerging scientific discipline Environmental Seismology.

If you are interested in contributing to or getting to know the latest methodological and theoretical developments, field and lab scale experimental outcomes, and the broad range of applications in geomorphology, glaciology, hydrology, meteorology, engineering geology, volcanology and natural hazards, then this session would be your choice. We anticipate a lively discussion about standing questions in Earth surface dynamics research and how seismic methods could help solving them. We will debate about community based research opportunities and are looking forward to bringing together transdisciplinary knowledge and mutual curiosity.

Topical keywords: erosion, transient, landslide, rockfall, debris flow, fracturing, stress, granular flow, rock mechanics, snow avalanche, calving, icequake, basal motion, subglacial, karst, bedload, flood, GLOF, early warning, coast, tsunami, eruption, tremor, turbidity current, groundwater, soil moisture, noise, dv/v, HVSR, fundamental frequency, polarization, array, DAS, infrasound, machine learning, classification, experiment, signal processing.

Geomorphometry, the quantitative analysis of land surfaces, employs mathematical, statistical, and image processing techniques to measure and understand morphological, hydrological, ecological, and other characteristics of landscapes. This session explores the latest advancements in geomorphometry and geomorphological mapping, essential tools for investigating landscape dynamics on Earth and other planetary bodies.

The increasing availability of high-resolution geospatial data, including global Digital Elevation Models (DEMs), LiDAR, and Structure-from-Motion (SfM) models, opens new opportunities for detailed morphometric analysis, from mapping novel landforms to uncovering complex surface processes. However, these advancements also pose significant challenges in data handling, processing and analysis, necessitating innovative geo-computation techniques, high-performance computing, and new analytical methods tailored to diverse contexts.

This session welcomes studies that showcase advanced methods in geomorphometry, including high-performance and parallel computing implementations, as well as conventional computing, or resource-limited computing tailored to wider communities or citizen-science applications.

We invite contributions from all disciplines, including geomorphology, planetary science, natural hazards, computer science, and Earth observation, focusing on but not limited to:

- Applications of Digital Elevation, Terrain, Surface Models and Point Clouds
- Utilization of high-resolution LiDAR, photogrammetry, and satellite data
- Innovations in automated surface analysis, machine learning, and algorithm development
- Morphometry of Earth and planetary surfaces, including studies of surface change
- Techniques for collecting and deriving geospatial data products
- Extraction and analysis of geomorphometric variables
- Mapping and morphometric analysis of landforms and landscapes
- Modeling natural hazards on terrestrial, marine and planetary surfaces
- Geomorphometry applications in urban planning and cultural heritage
- Professional, commercial, and industrial applications bridging academia and industry

We particularly encourage interdisciplinary approaches and contributions that highlight professional and industrial applications, including software development and toolkits that facilitate the practical use of geomorphometric techniques. Join us to discuss the frontiers of geomorphometry and its applications across disciplines.

Sediment transport is a fundamental component of all geomorphic systems (including fluvial, aeolian, coastal, hillslopes and glacial), yet it is something that we still find surprisingly difficult both to monitor and to model. Robust data on where and how sediment transport occurs are needed to address outstanding research questions, including the spatial and temporal controls on critical shear stress, the influence of varying grain size distributions, and the impact of large magnitude events. Recent developments have provided a) new opportunities for measuring sediment transport in the field; and b) new ways to represent sediment transport in both physical laboratory models and in numerical models. These developments include (but are not limited to) the application of techniques such as seismic and acoustic monitoring, 3D imaging (e.g. CT and MRI scanning), deployment of sensors such as accelerometers, replication of field topography using 3D printing, use of luminescence as a sediment tracer, remote sensing of turbidity, discrete numerical modelling, and new statistical approaches.

In this session we welcome contributions from all areas of geomorphology that develop new methods for monitoring and modelling all types of sediment transport, or that showcase an application of such methods. Contributions from ECRs and underrepresented groups are particularly encouraged.

3D data are becoming ubiquitous throughout geomorphology, with the rapid expansion in the availability of high-resolution topographic data, such as from terrestrial or airborne LiDAR, advances in the availability of CT scanning for sedimentological analysis, and the collection of combined topographic and bathymetric data from rivers and coasts. These data take the form of high-density 3D point clouds or image stacks, which might be used to model a landscape, a sediment core, or a riverbed, for example. Using 3D data to extract meaningful geomorphic information involves challenges in data acquisition, storage, analysis, and computational processing, which requires the innovation of new techniques or algorithms to efficiently process and analyse large volumes of data.

This session welcomes studies taking advantage of 3D data to advance our understanding of geomorphology, landscape evolution, or sediment transport. Abstract submissions may address any type of 3D data, including but not limited to topo-bathymetric data, CT scanning, terrestrial and airborne LiDAR, and UAV data. Topics may involve data acquisition; methods for processing and/or segmenting 3D data; extracting features such as landforms, sediment grain sizes, orientations, and shapes; or topographic change detection and landscape evolution. Submissions from early career scientists and from those in underrepresented groups within the geosciences are particularly encouraged.

Imaging the Earth’s surface and reconstructing its topography to study the landscape and (sub-) surface processes have strongly evolved during the past two decades, sometimes separately in different scientific disciplines of geosciences. New generations of satellites, Uncrewed Aerial Vehicles (UAVs), LiDAR systems, Structure-from-Motion (SfM) methods and deep learning approaches have made 2D, 3D and 4D (time series) data acquisitions easier, cheaper, and more precise. The spatial, temporal and spectral resolutions of the measurements cover wide ranges of scales, offering the opportunity to study the evolution of the ground surface from local to regional scale with unprecedented details. Coupled with the development of optimized workflows to digitize and process analogue data, such as historical aerial photographs, geoscientists now have various sets of tools to better understand our rapidly changing environments and distinguish the anthropogenic and natural causes of these changes.

However, challenges still exist at both methodological and application levels. How to properly acquire images and 3D data in harsh, remote or non-ideal environments? How to deal with complex camera distortions? How to process unknown, damaged and/or poorly overlapping digitized analogue photographs? How to properly assess the precision of these measurements and take these estimates into account in our results and interpretation? How to deal with heterogeneous time series? These questions exemplify situations commonly faced by geoscientists.

In the present session, we would like to gather contributions from a broad range of geoscience disciplines (geomorphology, glaciology, volcanology, hydrology, bio-geosciences, geology, soil sciences, etc.) to share our views and experience about the opportunities, limitations and challenges that modern 2D/3D/4D surface imaging offers, no matter the physical process or environment studied. Contributions can cover any aspects of surface imaging, from new methods, tools and processing workflows to precision assessments, time series constructions and specific applications in geosciences. We would like to especially emphasize contributions that cover 1) novel data acquisition and processing approaches (including image matching, camera distortion correction, complex signal/image and point cloud processing, and time series construction), 2) data acquisition in complex and fast-changing environments, and 3) innovative applications in geosciences.

Over recent decades, geochronological techniques such as cosmogenic nuclides, thermochronology, radiocarbon and luminescence dating have improved in accuracy, precision and temporal range. Developments in geochronological methods, data treatment and landscape evolution models have provided new insights into the timing, rates and magnitude of earth surface processes. The combination of geochronological data from different techniques with numerical modeling has enormous potential for improving our understanding of landscape evolution.

This session includes studies ranging from erosion rates, sediment provenance, burial and transport times, bedrock exposure, surface uplift rates, cooling histories and landscape dynamics to technical developments and novel applications of key Quaternary geochronometers such as cosmogenic nuclides and luminescence. We welcome contributions that apply novel geochronological methods, that combine geochronological techniques with numerical modeling or landscape evolution analyses, and that highlight the latest developments and open questions in the application of geochronometers to landscape evolution problems.

Transport of sediments in geophysical flows occurs in mountainous, fluvial, estuarine, coastal, aeolian and other natural or man-made environments on Earth, while also shapes the surface of planets 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 fluid and sediment transport as well as particle 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, geomorphology and river ecology.

A) particle-scale interactions and transport processes:
- mechanics of entrainment and disentrainment (fluvial and aeolian flows)
- momentum (turbulent impulses) and energy transfer between turbulent flows and particles
- upscaling and averaging techniques for stochastic transport processes
- granular flows in dry and submerged environments
- grain shape effects in granular flow and sediment transport
- interaction among grain sizes in poorly sorted mixtures, including particle segregation
- discrete element modelling of transport processes and upscaling into continuum frameworks
B) reach-scale sediment transport and geomorphic processes
- links between flow, particle transport, bedforms and stratigraphy
- derivation and solution of equations for multiphase flows (inc. fluvial and aeolian flows)
- shallow water hydro-sediment-morphodynamic processes
- highly unsteady and complex water-sediment or granular flows
- flash floods, debris flows and landslides due to extreme rainfall
C) large-scale landscape evolution, geohazards, and engineering applications
- natural and built dam failures and compound disasters
- coastal processes, e.g., long-shore and cross-shore sediment transport and the evolution of beach profile/shoreline
- reservoir operation schemes and corresponding fluvial processes
- design of hydraulic structures such as fish passages, dam spillways, also considering the impact of sediment
- dredging, maintenance and regulation for large rivers and navigational waterways

The Quaternary Period (last 2.6 million years) is characterized by frequent and abrupt climate swings and rapid environmental change. Studying these changes requires accurate and precise dating methods that can be effectively applied to environmental archives. Different methods or a combination of various dating techniques can be used depending on the archive, time range, and research question. Varve counting and dendrochronology allow for the construction of high-resolution chronologies. In contrast, radiometric methods (radiocarbon, cosmogenic in-situ, U-Th) and luminescence dating provide independent anchors for chronologies that span longer timescales. We particularly welcome contributions 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 modeling. Applications may aim to understand long-term landscape evolution, quantify rates of geomorphological processes, or provide chronologies for records of climate change and anthropogenic effects on Earth's system.

Continuous monitoring of natural physical processes is crucial for understanding their behaviour. The variety of instruments available enhances data collection, aiding in the comprehension of these processes. Long-term data collection reveals trends and patterns, such as seasonal variations, multi-year cycles, and anthropogenic impacts (e.g., deforestation, urbanization, pollution). Conversely, short-term monitoring is vital for real-time decision-making, improving hazard assessment, risk management, and warning systems. Effective data analysis and innovative instrumentation contribute to developing mitigation and adaptation strategies. This session highlights the application of geosciences and geophysical instrumentation, including sensors in natural and laboratory environments, for monitoring natural phenomena and utilizing data systems to study these processes.
The session disseminates advanced research on natural physical processes and the use of scientific principles to address future challenges, including extreme climatic conditions. It encourages novel, interdisciplinary approaches to monitoring, aiming to establish historical baselines. This session seeks to bridge scientific knowledge and technological advancements to improve monitoring and understanding of natural physical processes. The session is inter- and transdisciplinary (ITS), covering topics such as:

1. Destructive and Non-Destructive Sensing Techniques, including contactless and remote sensing methodologies.
2. Monitoring System Developments for understanding hydro-meteorological processes, glaciers, soil erosion, settlements, liquefaction, landslides, earthquakes, volcanic events, and wildfires.
3. Real-Time Monitoring Systems, integrating geoscience data with Building Information Modelling (BIM), digital twins, robotic monitoring, and automation for improved decision-making.
4. Advances in Data Systems for efficient real-time monitoring and processing of large data volumes using Cloud Data Platforms, Distributed and Scalable Data Systems, Real-Time Data Processing, AI, Machine Learning, Data Privacy and Security, and Edge Computing.
5. Storage Technologies and Data Integration, including advancements in Graph Databases, Data Interoperability, and Multi-Model Databases.
6. Intelligent data analysis approaches to analyse accurate and precise interpretation of big data sets driven by various technologies.

Recent advancements in thermochronology have significantly broadened its applicability to provide insights on Earth-system processes across various geological settings and timescales. However, novel applications of thermochronometric techniques sometimes reveal limitations in our understanding of thermochronometric systems and flaws of their associated theoretical models. This session aims to present the state-of-the-art of mid- and low-temperature thermochronometric systems – including but not limited to the Ar/Ar, fission tracks, Raman dating, (U-Th)/He, 4He/3He and trapped charge dating systems – and assess their ability (and disability) to provide reliable datasets for geological interpretation. We welcome contributions that explore (1) theoretical and experimental work introducing new thermochronometers or aiming at improving our understanding of current systems, (2) innovative approaches to quantify and model thermochronometric data, (3) integration of thermochronology with field observations, remote sensing, geomorphological techniques, isotopic methods and modeling (numerical and analog), and (4) applications that constrain the timing, magnitude, and rates of processes affecting the lithosphere and shaping the Earth surface across various temporal and spatial scales. We particularly welcome contributions aiming at providing new constraints on relief evolution, deposition/erosion, source to sink processes, sediment provenance, weathering, faulting, hydrothermalism, tectonics, geothermal changes, formation of ore deposits. These insights will pose important implications for the broader Earth-science community.

Humans have been successfully mapping the remotest and most inhospitable places on Earth, and the surfaces and interiors of other planets and their moons at highest resolution. However, vast areas here on Earth remain blank spots and are located in areas that have not been accessed either through field surveys, geophysical methods or remote sensing due to technical and/or financial challenges. Some of these regions are crucial, as they hold the potential to uncover important geological and habitat information to facilitate future exploration efforts and an overall better understanding of our environment.
Such extreme and remote locations are commonly associated with the ocean floor, or planetary surfaces, but these extreme worlds might also be found in hot deserts, under the ice, in high-mountain ranges, in volcanic edifices, hidden underneath dense canopy cover, or located within the near-surface crust. All such locations are prime targets for remote sensing mapping in a wider sense. The methodological and technical repertoire to investigate extreme and remote locations is thus highly specialized and despite different contexts there are commonalities not only with respect to technical mapping approaches, but also in the way how knowledge is gathered and assessed, interpreted and visualised regarding its scientific but also its economic value.
This session invites contributions to this field of geologic mapping and cartography of extreme (natural) environments with a focus on the scientific synthesis and extraction of information and knowledge.
A candidate contribution might cover, but is not limited to, topics such as:
- ocean mapping using manned and unmanned vehicles and devices,
- offshore exploration using remote sensing techniques,
- crustal investigation through drilling and sampling,
- mapping campaigns in glaciated regions
- subsurface investigation using radar techniques,
- planetary geologic and geophysical mapping,
- geologic investigation of desert environments.
The aim of this session is to bring together researchers mapping environments that are hardly accessible or not accessible at all, thus often relying on geophysical or remote sensing techniques as main source for collecting data and information. We would like to focus on geological and geophysical mapping of spots for which we have no or only very limited knowledge due to the harsh environmental conditions, and we would thus exclude areas that are inaccessible for political reasons.

The past years have seen a renaissance in applications of meteoric cosmogenic 10Be and the 10Be(meteoric)/9Be(stable) ratio in the terrestrial, oceanic, and helio-magneto-atmospheric realms. Terrestrial applications include quantifying soil residence times, dating of landforms such as moraines and sedimentary sections, soil mixing and transport, catchment-wide erosion, weathering and denudation rates as well as subglacial erosion. Marine applications include reconstructions of cosmogenic production rates, ocean water circulation, trace metal input and global paleo-weathering. Many of these applications rely on knowing the meteoric 10Be depositional flux, which is provided by marine and ice core/lake archives. Conversely, 10Be concentrations and the 10Be/9Be ratio are used to reconstruct changes in the meteoric 10Be depositional flux related to helio- and geomagnetic modulation of the cosmic ray flux. For a better quantitative understanding of these records, modelling-based approaches encompass atmospheric production and delivery models that include aerosol chemistry and transport models and state-of-the-art physics-based 10Be production functions.

This session invites a broad range of contributions surrounding meteoric 10Be, with the aim to bring together colleagues from these different communities to stimulate discussion and foster collaboration. The contributions may include, but are not limited to, the “model side” (e.g. construction of atmospheric production/delivery models, their downscaling, and inter-model comparison as well as comparison to observational data, systematics/laws of meteoric 10Be production and depositional flux, effects of geo- and heliomagnetic variations), and the “observational side”. This may include studies relying on either knowing the depositional flux, such as meteoric 10Be/9Be in terrestrial weathering and denudation, dating of landforms, or reconstructing the depositional flux from geomagnetic field observations or from terrestrial and marine archives, as well as oceanic applications.

Mountains are iconic landmarks, impressive sides, water sources, and home to many people. In the high elevation and over-steepened topography of the high mountain ranges such as the Alps, Himalayas, Andes, and Rockies, to name a few, catastrophic hazards unfold from high elevations, and trigger often associated events on their long way downstream, amplifying the effects even further. These events can be widespread or start in very confined and localized places. Typically, they are triggered by earthquakes, severe storms, and/or a concatenation of events like rapid warming of high-elevation snowpack, rain on frozen ground, the failure of a moraine-dammed lake, avalanches or landslides triggering further mass mobilization and so forth. As global warming progresses and equilibrium altitude lines of glaciers and freezing zones in general move upslope, large areas become ice-free and uncover large amounts of now mobile materials that were frozen and stable before. These freshly exposed, often easily erodible materials add now to the overall thread. Their location at high elevations and with the altitude-associated potential energy make these materials even more prone to compounding events in the future.

We welcome contributions investigating in space and time:

- catastrophic mobilization of sediments and cascading events
- hazards associated with deposition and runout features
- concepts of compounding and cascading dynamics
- connectivity between hillslopes and river networks
- feedback loops of stabilizing and destabilizing processes on the slopes

We invite presentations that focus on observational, conceptual, methodological, or modeling approaches or a combination of those in all kinds of mountain environments and particularly encourage early career scientists to apply for this session.

Flooding is one the deadliest and most costly natural hazards on the planet. Nearly one billion people are exposed to the risk of flooding in their lifetimes with about 300 million people impacted in any given year. As a result, flooding results in major impacts on both individuals and societies, with estimated costs of 60 billion (US$) annually.
There is a clear consensus that climate change is already causing increases in the frequency and intensity of extreme rainfall events, a trend that is expected to intensify in the coming decades. As a result, it is expected that there will be a further substantial rise in flood hazard in the coming decades, with societal exposure to this risk aggravated still further as a result of population growth and the encroachment of people and infrastructure onto floodplains.
However, climate change is not the only factor influencing the evolution of flood hazard. The carrying capacity of river and delta channels to convey storm runoff without inundating adjacent floodplains is also key, yet this conveyance capacity varies through time in response to changes in roughness and due to channel re-shaping by erosion and sedimentation. Other factors such as floodplain connectivity and, in lowland rivers and deltas, changes in sea level, are also of great importance.
This session invites contributions that explore the ways in which hydrological, geomorphological, and climatic drivers interact to determine flood hazard in rivers and deltas. We also welcome studies investigating how interventions such as flood barriers, managed floodplains and hard engineering are contributing to increases or reductions in flood risk. We especially encourage interdisciplinary studies involving experimental, modelling, and field-based approaches that are advancing methods and providing new insights into: (i) how the morphodynamic functioning of fluvial systems is driving changes in recent past, present, and future trajectories of flood hazards; (ii) the effects of human-induced perturbations on flood hazard and risk; (iii) climate related impacts on future trends in flood hazard; (iv) patterns, trends and drivers of flooding and morphological changes across present and historical records.

Natural hazards, such as floods and slope failures, mobilize large quantities of sediment in fractions of time. Yet, their impact on sedimentary systems and landscape evolution can last from the event scale to millions of years. Understanding sediment generation by natural hazards, as well as the interactions between natural hazards and other source-to-sink processes, is important for predicting the response of planetary surfaces to past and future environmental change. This session invites contributions on the role of natural hazards in source-to-sink systems over all spatial and temporal scales. Likewise, we are interested in how source-to-sink studies contribute to understanding past or future hazards.

We welcome research on a wide range of hazards including landslides, rockfalls, rock avalanches, debris flows, volcanic eruptions, flooding, tsunamis, and climate warming-induced hazards like thawing permafrost and retreating glaciers. We seek submissions that explore the roles of climate, tectonics, and human impacts on natural hazards and sediment dynamics. We especially encourage studies investigating dynamic feedbacks among natural hazards, sediment routing systems, and human modification of the landscape. We welcome contributions using any combination of field, experimental, theoretical, or numerical approaches.

Coastal areas are highly exposed to multiple natural and anthropic hazards. Ongoing global warming has triggered accelerated sea-level rise (SLR) and variation in terms of the intensity and frequency of extreme meteorological events. SLR, storms and tsunamis can generate temporary flooding and permanent submersion of the coastal areas, depending on the geomorphological and sedimentological (underwater and subaerial) features. Worldwide, low-lying coastal areas such as alluvial plains, deltas, and lagoons, are considered the most prone to be impacted by the expected increase in magnitude and frequency of the climate-driven processes (e.g., erosion, retreat, and flooding) with significant consequences on those ecosystems and human settlements. With the aim of identifying tailored adaptation activities and supporting the sustainable management of the coastal sectors, the scientific challenge is to assess the impacts of sea level variations on coastal natural and anthropic assets and to define potential coastal resilience over the next decades by the exploitation high-resolution datasets and advanced tools and technologies, which include remote sensing, machine learning, deep learning and computer vision methodologies. This session is devoted to collect contributions focussing on the expected global, regional, and local coastal modifications, the potential impacts of extreme meteorological and inundation events over time, as well as the socio-economic assets exposed to sea-level rise. Geomorphological studies on coastal dynamic and evolution by means of multidisciplinary methodologies and investigations as indicated are welcome:
a) modelling approaches for coastal risk assessment, b) influence of coastal dynamics on coastal infrastructures, c) multi-risk assessment of the coastal zone, d) the impact of erosion, flooding on natural environments, infrastructures, socioeconomic assets and heritage sites, e) application of innovative techniques of Artificial Intelligence (AI) for the analyses of data collected in coastal area, f) development of new techniques of remote survey and sensing for coastal environment.

Coastal areas are among the most dynamic elements of the physical landscape, strongly influenced by both short-term (e.g., catastrophic meteo-marine events, human impacts) and long-term (e.g., tectonics, climate change, volcanic activity) forcing factors. Therefore, the study of coastal proxies can offer a series of benchmarks for estimating processes and associated timescales.
Among the most studied processes in coastal areas are relative sea-level changes. Any landscape feature whose environment of formation is linked to a former sea level can be used as a sea level index point (SLIP). SLIPs can be of different types: geomorphological (e.g., marine terraces, shoreline angles), biological (e.g., coral reef terraces), sedimentary (e.g., beach deposits, saltmarshes or beach ridges).
Although there is a comprehensive understanding of the relative sea-level changes during the Holocene, our knowledge of such dynamics during past interglacials remains limited. This session invites the international sea-level community to present studies broadly related to Quaternary interglacials. We welcome contributions on new field or remote sensing data, synthesis and databases specifically related to sea-level changes (including geochronological methods). We also welcome contributions exploring other coastal processes at the same timescale, focussing on wave conditions, extreme coastal events, and coastal modelling.
This session falls under the purview of PALSEA-Next, a working group of the International Union for Quaternary Sciences (INQUA) and Past Global Changes (PAGES) and from the WARMCOASTS project, funded by the European Research Council under the EU Horizon 2020 Research and Innovation Programme (grant agreement n. 802414).

Alpine mass movements, rockfalls, rockslides and rock avalanches are among the primary hazards and drivers of landscape evolution in steep terrain. The physics of rock slope degradation and dynamics of failure and transport mechanisms define the hazards and possible mitigation strategies and enable retrodictions and predictions of events and controls.

This session aims to bring together state-of-the-art methods for predicting, assessing, quantifying, and protecting against rock slope hazards across spatial and temporal scales. 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. We especially encourage contributions from geomechanics/rock physics, geodynamics, geomorphology and tectonics to better understand how rockfall, rockslides and rock avalanches act across scales.

Innovative contributions dealing with mass movement predisposition, detachment, transport, and deposition are welcome on (i) insights from field observations and/or laboratory experiments; (ii) statistical methods and/or artificial intelligence to identify and mapped mass movements; (iii) new monitoring approaches (in-situ and remote sensing) applied at different spatial and temporal scales; (iv) models (from conceptual frameworks to theoretical and/or advanced numerical approaches) for the analysis and interpretation of the governing physical processes; (v) develop strategies applicable for hazard assessment, mitigation and protection. We also aim at triggering discussions on preparedness and risk reduction, and studies that integrate social, structural, or natural protection measures.

At EGU 2025, this session has its 20th edition. Since 2006, it builds a growing community and network at EGU and beyond for senior scientists as well as young researches.

Slope instability phenomena – affecting diverse materials with a variety of mechanisms (e.g., earthslides, rockfalls, debris flows) – are recognised to be driven by weather patterns largely differing in terms of variables (precipitation, temperature, snow melting) and significant time span (from a few minutes up to several months). However, local modifications induced by human intervention, such as socio-economic-induced land use/cover changes, reduced soil management due to land abandonment, or the implementation and maintenance of Nature-Based Solutions, are recognised to play a key role in defining landslide hazard and risk. In turn, these local human-induced factors can be strongly influenced by weather dynamics. For instance, hydrological and thermal regimes regulate vegetation suitability, then land cover and, in turn, landslide hazard and risk.
A clear and robust evaluation of how ongoing and expected global warming and the resulting climate change can affect these factors and, hence, landslide risk represents a clear key need for practitioners, communities, and decision-makers.
This session aims to provide a discussion forum for studies concerning the analysis of the role of climate-related variables and slope-atmosphere interaction on landslide triggering, propagation, and activity and/or on the effectiveness of protection measures across different geographic contexts and scales. Test cases and investigations (by exploiting monitoring and modelling) to evaluate ongoing and future landslide activity are welcome. Furthermore, investigations focused on data-driven approaches (Machine Learning, AI), through which the variations induced by climate and environmental changes on triggering, dynamics, and hazard are analysed, are greatly welcome.

Large mass movements in rock, debris, and ice in glacial masses, represent enormous risks. These complex systems are difficult to describe, investigate, monitor, and model. Hence a reliable model of these phenomena requires acquisition and analysis of all available data to support successive steps up to the management of Early Warning systems.
Large instabilities affect all materials (rock, weak rocks, debris, ice), from low to high altitudes, evolving as slow or fast complex mass movements. This and the complex dependency on forcing factors result in different types and degrees of hazard and risk. Some aspects of these instabilities are still understudied and debated, because of difficult characterization and few cases thoroughly studied. Regional and temporal distribution, relationships with controlling and triggering factors are poorly understood resulting in poor predictions of behavior and evolution under present and future climates. How will it change their state of activity under future climatic changes? How this will impact on existing structures and infrastructures? How can we improve our predictions? Relationships among geological and hydrological boundary conditions and displacements are associated with the evolution in space and time of thermo-hydro-mechanical controls as well as the properties of the unstable mass. Even for well-studied and active phenomena warning thresholds are mostly qualitative, based on semi-empirical approaches. Hence a multidisciplinary approach and robust monitoring data are needed. Many modeling approaches can be applied to evaluate instability and failure, considering triggerings, and failure propagation, leading to rapid mass movements. Nevertheless, these approaches are still phenomenological and have difficulty explaining the observed behavior. The impacts of such instabilities on structures represent a relevant risk and an opportunity in terms of investigations and quantitative measurements of the effects on tunnels, dams, and roads. The design of these structures and knowledge of their expected performance are fundamental.
We invite to present case studies, share views and data, discuss monitoring and modeling approaches and tools, to introduce new approaches for threshold definition, including advanced numerical modeling, Machine Learning for streamline and offline data analyses, development of monitoring tools, and dating or investigation techniques.

The growing availability of multi-temporal landslide inventories, for example from multi-epoch LiDAR, InSAR, and monitoring, has precipitated a shift from static landslide susceptibility evaluations to a better understanding of both spatial and temporal variations in landslide activity. In parallel, the development of regional to global hydroclimatic models, re-analysis products, next generation remote sensing products, and compilations of in-situ observations (such as ERA5, SMAP-L4, and GSDR) is allowing researchers to obtain a broader understanding of the hydro-meteorological conditions that affect landslide activity: for example soil moisture, snow melt, precipitation, and meso and synoptic scale weather systems. Currently, researchers and practitioners are exploring how linkages between historical landslide activity and hydro-meteorological drivers can be integrated to improve data driven models for landslide situational awareness and early warning systems. This session seeks to bring together a wide range of perspectives from geomorphology, hydrology, meteorology, remote sensing, data science and beyond to share experiences and to spur future research advances and operational application development.

Subtopics may include:
• Constructing multi-temporal landslide activity data sets utilizing remote sensing data and/or point source terrestrial data
• Linking regional landslide activity trends and variability to hydro-meteorological, geological, morphological, or other conditions.
• Evaluating the suitability of different hydroclimatic models, re-analysis datasets, remote sensing products, and in-situ observations to different landslide and terrain types or research objectives
• Approaches to quantifying linkages between hydro-meteorological drivers and landslide activity
• Development and testing of new algorithms and infrastructure, including machine and deep learning approaches, to support weather-related landslide situational awareness and warning

Landslides can trigger catastrophic consequences, leading to loss of life and assets. In specific regions, landslides claim more lives than any other natural catastrophe. Anticipating these events proves to be a monumental challenge, encompassing scientific curiosity and vital societal implications, as it provides a means to safeguard lives and property.
This session revolves around methodologies and state-of-the-art approaches in landslide prediction, encompassing aspects like location, timing, magnitude, and the impact of single and multiple slope failures. It spans a range of landslide variations, from abrupt rockfalls to rapid debris flows, and slow-moving slides to sudden rock avalanches. The focus extends from local to global scales.

Contributions are encouraged in the following areas:

Exploring the theoretical facets of predicting natural hazards, with a specific emphasis on landslide prognosis. These submissions may delve into conceptual, mathematical, physical, statistical, numerical, and computational intricacies.
Presenting applied research, supported by real-world instances, that assesses the feasibility of predicting individual or multiple landslides and their defining characteristics, with specific reference to early warning systems and methods based on monitoring data and time series of physical quantities related to slope stability at different scales.
Evaluating the precision of landslide forecasts, comparing the effectiveness of diverse predictive models, demonstrating the integration of landslide predictions into operational systems, and probing the potential of emerging technologies.

Should the session yield fruitful results, noteworthy submissions may be consolidated into a special issue of an international journal.

Geo-hydrological hazards pose a serious threat around the world, compromising the safety of human life, the protection of economic activities, ecosystems and biodiversity, environmental and archaeological assets. Among natural disasters, those related to geo-hydrological phenomena, such as floods and slope instabilities, play a particularly critical role in mountainous regions. Surface landslides, rapid earth/debris flows, and soil erosion are the mass wasting phenomena most influenced by rainfall events over the slopes, while overflowing of water onto dry lands and sediment transport during high flow events are processes driven by hydrology at the catchment scale. The variations in intensity, frequency and duration of rainfalls due to climate change could translate into an exacerbation of ground effects and substantial increase in the risk in the urbanised areas, therefore in the costs associated with geo-hydrological phenomena. Gaining insight the factors that influence the development of a weather-related phenomenon and the impact on exposed elements and therefore assessing risk is essential for developing resilient communities capable of facing future climatic challenges.
We invite contributions on all facets of geo-hydrological hazard in the context of climate variability, exploring the theoretical aspects of prediction up to the consequent space-time landscape evolution and risk management. This includes studies on individual hazards, multiple hazards, or interactions and cascades of hazards. We also encourage contributions that explore the application of scientific methods in practice and the effective use of data to mitigate risks.

Contributions focusing on, but not limited to, novel developments and findings on the following topics are particularly encouraged, even presenting case studies:
- Characteristics of weather and precipitation patterns leading to extreme and high impact events;
- Advanced methodologies and cutting-edge techniques for predicting geo-hydrological phenomena, covering elements such as impact location, timing, magnitude, spatial evolution etc.;
- Ground effects assessment and landscape evolution in different risk contexts of both single and multiple events;
- Relationships between the climate change and the increasing hazard phenomena in their complexity and heterogeneity;
- Vulnerability and hazard mitigation procedures;
- Strategies for increasing preparedness, and self-protective response as preventive actions.

Extreme hydro-meteorological events drive many hydrologic and geomorphic hazards, such as floods, landslides and debris flows, which pose a significant threat to modern societies on a global scale. The continuous increase of population and urban settlements in hazard-prone areas in combination with evidence of changes in extreme weather events lead to a continuous increase in the risk associated with weather-induced hazards. To improve resilience and to design more effective mitigation strategies, we need to better understand the triggers of these hazards and the related aspects of vulnerability, risk, mitigation and societal response.
This session aims at gathering contributions dealing with various hydro-meteorological hazards that address the aspects of vulnerability analysis, risk estimation, impact assessment, mitigation policies and communication strategies. Specifically, we aim to collect contributions from academia, industry (e.g. insurance) and government agencies (e.g. civil protection) that will help identify the latest developments and ways forward for increasing the resilience of communities at local, regional and national scales, and proposals for improving the interaction between different entities and sciences.
Contributions focusing on, but not limited to, novel developments and findings on the following topics are particularly encouraged:
- Physical and social vulnerability analysis and impact assessment of hydro-meteorological hazards
- Advances in the estimation of socioeconomic risk from hydro-meteorological hazards
- Characteristics of weather and precipitation patterns leading to high-impact events
- Relationship between weather and precipitation patterns and socio-economic impacts
- Socio-hydrological studies of the interplay between hydro-meteorological hazards and societies
- Hazard mitigation procedures
- Strategies for increasing public awareness, preparedness, and self-protective response
- Impact-based forecast, warning systems, and rapid damage assessment.
- Insurance and reinsurance applications

Evolving climate patterns and land use changes, coupled with improved monitoring capabilities, are contributing to a notable increase in seismic and infrasound detections of surficial mass movements. These events — landslides, rock/ice/snow avalanches, debris flows, lahars, pyroclastic density currents, glacial processes, etc. — can pose significant hazards, and there is a pressing need to better understand, characterize, and mitigate them. While these sources are not routinely monitored in real-time like earthquakes, ever-expanding seismic and infrasound networks offer opportunities for rapid early warning and post-event detection and analysis. Improved data sources and techniques can also help search for reliable precursors to catastrophic failure and can be used to characterize existing slope instabilities.

This session explores innovative methods that improve our comprehension of these non-earthquake seismic and acoustic sources and enhance our ability to characterize and monitor them and mitigate their associated hazards. We invite presentations that investigate various types of surficial mass movements by leveraging seismic and/or infrasound techniques, including the application of machine learning or inclusion of ancillary constraints through ground-based, airborne, and satellite imagery or other geophysical data streams. Topics of interest encompass — but are not limited to — source detection, location, characterization, modeling, and classification; precursory signal analysis; monitoring; innovative instrumentation (e.g., distributed acoustic sensing, nodal sensors, large-N arrays/networks); and hazard mitigation.

Wildfires are a worldwide phenomenon with many environmental, social, and economic implications, which are expected to escalate as a consequence of climate change and land abandonment, management, and planning, further promoting land degradation and decreasing ecosystem services supply.
The current situation demands from the scientific community the study of wildfire effects on the ecosystems and the development of integrated tools for pre- and post-fire land management practices that reduce the vulnerability to wildfires and their impacts. However, this research urges the attention not only from researchers, but also from stakeholders and policy-makers all over the world, since basic resources such as raw materials, water, and soils as well as habitats are at stake.
This session aims at gathering researchers on the effects of wildfires on ecosystems, from wildfire prevention to post-fire mitigation. We kindly invite laboratory, field, and/or modelling studies involving the following topics:
i. prescribed and/or experimental fires;
ii. fire severity and burn severity;
iii. fire effects on vegetation, soil and water;
iv. post-fire hydrological and erosive response;
v. post-fire management and mitigation;
vi. socio-economic studies on pre- and post-fire land management;
vii. fire risk assessment and modelling.

Nature-based solutions and eco-engineering interventions aim to work with natural processes to mitigate increased incidence in hydrometeorological extremes due to climate change. Examples of nature-based solutions include the addition of large wood or vegetation patches, floodplain reconnection, and the creation of blue-green urban infrastructures. The aims and design strategies for these interventions build on hydrological, biogeomorphic, and geochemical processes at multiple spatial and temporal scales including ecohydraulic interactions with vegetated canopy flows and large wood, sediment transport, and feedbacks with ecologic processes. Implementation and assessment frameworks for nature-based solutions are rapidly developing, with many challenges and open questions remaining. Therefore, an improved understanding of basic process-based function of nature-based solution designs and development of modelling strategies are urgently needed to ensure intervention efficacy meet the challenge of mitigating increasing extremes in a changing climate.

This session aims to form a broad range of cross-sector scholarship, including academic researchers, water managers, community stakeholders, and independent researchers. We invite you to submit abstracts broadly related to the following topics:
• Design of resilient nature-based solutions under a changing climate (floods versus droughts)
• Frameworks to evaluate nature-based solutions
• Modelling strategies of nature-based solutions: physical and numerical
• Field investigations of nature-based solutions including remote-sensing
• Implications of nature-based solutions on flow structures and sediment transport
• Ecological impacts and ecosystem services of nature-based solutions
• Management and maintenance of nature-based solutions
• Case studies of successful nature-based solution strategies including socio-economic aspects

It is clear that human impact on earth surface processes is almost ubiquitous. At present the scale of human impacts upon geomorphic systems is considerably larger than at any point in the past with a plenitude of either direct or indirect impacts on the systems’ structure and function. This session aims to provide a platform for studies on the role of humans as agents of geomorphic change and associated environmental feedbacks. We also welcome studies which conceptionally discuss the importance of geomorphology as a discipline within the overall Anthropocene debate. We look for both, conceptional contributions, and quantitative approaches, e.g. based on modelling and/or field surveys, addressing the effects of human agency on all geomorphological process domains (aeolian, fluvial, cryospheric, coastal, hillslope). This could include, but is not limited to the effects of construction works, river engineering, land use/management, or climate change. Moreover, this session especially welcomes studies contrasting natural and human dominated systems.

Human activity became a major player of global climatic and environmental change in the course of the late Quaternary, during the Anthropocene. Consequently, it is crucial to understand these changes through the study of former human-environmental interactions at different spatial and temporal scales. 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, provides valuable opportunities to learn from the past. To do so, cross-disciplinary studies in Geoarchaeology offer a chance to better understand the archaeological records and landscapes in context of human culture and the hydroclimate-environment nexus over time. This session seeks related interdisciplinary papers and specific geoarchaeological case-studies that deploy various approaches and tools to address the reconstruction of former 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. Furthermore, contributions may include (but are not limited to) insights about how people have coped with environmental disasters or abrupt changes in the past; defining sustainability thresholds for farming or resource exploitation; distinguishing the baseline natural and human contributions to environmental changes. Ultimately, we would like to understand how strategies of human resilience and innovation can inform our modern policies for addressing the challenges of the emerging Anthropocene, a time frame dominated by human modulation of surface geomorphological processes and hydroclimate.

The integration of geological and archaeological methodologies proves valuable for the study of human activity and landscape evolution, especially as the application of advanced analytical methods becomes more frequent. The formation of archaeological sites is closely coupled with geomorphological processes resulting in the deposition, preservation, reworking and exposure of sediments and remains of human activity. In addition to its anthropogenic record, an archaeological site can be investigated as an archive recording the interaction of fluvial, aeolian and tectonic events that operate on various temporal and spatial scales. However, despite the shared perspectives of archaeological and geomorphological studies, those two fields are not commonly integrated within a unified holistic framework, which limits their impact.

This session is open to a wide range of studies that integrate the study of geomorphological, sedimentological and environmental proxies at archaeological sites, alongside investigations that incorporate geological approaches to address archaeological and geomorphological questions. The goal is set to provide a platform for describing common challenges and achievements that may lead to synergistic outcomes and outline directions for future cooperation and for the establishment of a common language. The session is not restricted to any specific time period or geographical area, but rather wishes to highlight methodological novelties and common challenges shared by both disciplines.

Geodiversity encompasses all the natural abiotic elements of the Earth, such as the range of geological, geomorphological, hydrological, and pedological features and processes. Human societies have utilized these elements for thousands of years. It provides essential ecosystem services and benefits, offering spaces for societal development and goods essential for life. Geodiversity also plays a significant role in the historical and religious context and traditional practices of various communities.
'Geoheritage' refers to elements of geodiversity considered worthy of protection, offering insights into Earth's history. Understanding this history is vital for comprehending current climate and environmental changes and fostering climate-resilient societies. Geoheritage and geodiversity are important in a sustainable society, significantly contributing, e.g., through geotourism, to the attainment of the United Nations’ Sustainable Development Goals.
Several initiatives have been developed to promote geodiversity and geoheritage. For instance, in 2021, UNESCO endorsed the International Geodiversity Day, which has been celebrated globally on October 6th since 2022. Furthermore, the Zumaia Declaration of the International Union of Geological Sciences (IUGS) in October 2022 emphasized the importance of promoting and preserving geoheritage and geodiversity for societal benefit.
In this context, the session aims to offer a comprehensive platform for studies on geodiversity and geoheritage, establishing an international hub for collaboration and raising awareness of their societal role. Focus areas includes:
• Methods and tools in geodiversity and geoheritage, such as assessments and mapping techniques.
• Geoconservation and geotourism management, with strategies for geoheritage site preservation and community involvement through citizen science projects.
• Geoheritage and education, highlighting experiences in innovative educational programs and the role of geoparks in disseminating geoscientific knowledge and increasing geoheritage awareness.
• The social and cultural links between geodiversity, geoheritage, and cultural identity.
• The interaction between geodiversity and biodiversity, emphasizing the role of abiotic components in ecosystem services.
The session is co-organised by the Geomorphosites Working Group of the International Association of Geomorphologists (IAG) and ProGEO, the International Association for the Conservation of Geological Heritage.