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Session programme

NH2

NH – Natural Hazards

NH2 – Volcanic Hazards

NH2.1 Media

More than 75% of the volcanic activity on Earth occurs underwater. Recent unrest observed at many submarine volcanoes raises serious concerns regarding the level of risk posed to local communities. Many parameters of submarine to emergent volcanic activity are under active investigation, including how explosive activity varies with water depth, magma properties and magma composition. This session brings together experts from diverse disciplines to explore hazards posed to island and coastal communities as well as mechanisms of submarine to emergent volcanic activity.

The session will include presentations that integrate innovative and emerging technologies to enable focused and multi-disciplinary studies of recent and ancient eruptions and their products, as well as breakthrough developments in understanding the impact of disastrous submarine volcanic hazards on present and past societies.

We call for abstracts in the following areas:
- Identification of submarine volcanic hazards such as explosive eruptions, volcanic earthquakes, submarine landslides, hydrothermal emissions and volcanogenic tsunamis.
- Studies of the mechanics of submarine and emergent volcanic eruptions and formation of oceanic islands.
- Investigations of optimal monitoring technologies and state of the art methods that provide new insights into explorations of submarine volcanoes, which host hydrothermal systems, mineral deposits and biomediated processes.
- Recommendations for volcanic crisis management, public awareness and preparedness through an improved understanding of the hazards and impacts of submarine volcanoes.

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Co-organized as GMPV5.18
Convener: Paraskevi Nomikou | Co-conveners: Magnus Tumi Gudmundsson, Marie Dolores Jackson, Steffen Jørgensen
Orals
| Wed, 10 Apr, 08:30–10:15
 
Room L8
Posters
| Attendance Wed, 10 Apr, 10:45–12:30
 
Hall X3
BG1.68

The European countries are often recognised as the cradle of some of the world’s most important cultural heritage in stone. The cultural, artistic and social importance of stone monuments and lithic works of art evidences the general need to safeguard our praiseworthy cultural heritage. Unfortunately, we are confronted with some problems concerning their conservation, such as the increase of atmospheric contamination, the complex interactions between physical, chemical and biological factors, vandalism, lack of maintenance, and inefficient conservation treatments. This session will focus on the novel approaches that have been recently developed in the field of stone cultural heritage. The new emerging technologies, together with the variety of strategies, methodologies and biotechnological approaches available today show the wide range of possibilities that can be applied to stone heritage conservation. We invite studies devoted to: (i) novel tools for the identification of microorganisms and metabolites responsible for stone biodeterioration; (ii) biomaterials used for the preservation of granite and limestone materials; (iii) natural products from plants or microorganisms as innovative bioactive compounds for controlling biodeterioration; (iv) biotechnological approaches for the preservation of stone-built heritage and removal of sulphates, nitrates or organic substances from stone walls; (v) bioremediation strategies for building restoration. Experimental design setups, laboratory-based assays and field tests are also welcomed.

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Co-organized as ERE7.3/NH2.4
Convener: Patricia Sanmartín | Co-conveners: Ana Z. Miller, Domenico Pangallo, Guadalupe Piñar Larrubia
Posters
| Attendance Wed, 10 Apr, 10:45–12:30
 
Hall A
GMPV5.1

The session deals with the documentation and modelling of the tectonic, deformation and geodetic features of any type of volcanic area, on Earth and in the Solar System. The focus is on advancing our understanding on any type of deformation of active and non-active volcanoes, on the associated behaviours, and the implications for hazards. We welcome contributions based on results from fieldwork, remote-sensing studies, geodetic and geophysical measurements, analytical, analogue and numerical simulations, and laboratory studies of volcanic rocks.
Studies may be focused at the regional scale, investigating the tectonic setting responsible for and controlling volcanic activity, both along divergent and convergent plate boundaries, as well in intraplate settings. At a more local scale, all types of surface deformation in volcanic areas are of interest, such as elastic inflation and deflation, or anelastic processes, including caldera and flank collapses. Deeper, sub-volcanic deformation studies, concerning the emplacement of intrusions, as sills, dikes and laccoliths, are most welcome.
We also particularly welcome geophysical data aimed at understanding magmatic processes during volcano unrest. These include geodetic studies obtained mainly through GPS and InSAR, as well as at their modelling to imagine sources.


The session includes, but is not restricted to, the following topics:
• volcanism and regional tectonics;
• formation of magma chambers, laccoliths, and other intrusions;
• dyke and sill propagation, emplacement, and arrest;
• earthquakes and eruptions;
• caldera collapse, resurgence, and unrest;
• flank collapse;
• volcano deformation monitoring;
• volcano deformation and hazard mitigation;
• volcano unrest;
• mechanical properties of rocks in volcanic areas.

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Co-organized as G3.10/NH2.5/TS10.2
Convener: Valerio Acocella | Co-conveners: Agust Gudmundsson, Michael Heap, Sigurjon Jonsson, Virginie Pinel
Orals
| Wed, 10 Apr, 10:45–12:30, 14:00–18:00
 
Room D1
Posters
| Attendance Thu, 11 Apr, 16:15–18:00
 
Hall X2
GMPV5.2

Over the past few years, major technological advances allowed to significantly increase both the spatial coverage and frequency bandwidth of geochemical and geophysical observations at active volcanoes. Establishment of high-rate GPS networks, continuous gravity meters, dense arrays of broad-band seismometers, and networks of instruments for the quantitative measurement of volcanic gas emissions now permits an unprecedented, multi-parameter vision of the surface manifestations of mass transport beneath volcanoes. Accompanying these progresses are new models and processing techniques leading to innovative paradigms for the interpretation and inversion of observational data. Within this context, this session aims at bringing together a multidisciplinary audience to discuss about the most recent innovations in monitoring approaches and to present observations, methods and models that increase our understanding of volcanic processes.

We welcome contribution related to (1) New instruments and techniques for the measurement of geophysical and geochemical parameters, from in-situ methods to ground-, air- and space-based remote sensing techniques; (2) Reports of significant case histories, documenting the relationships between the measured parameters and the evolving volcanic processes; (3) New modelling frameworks for the interpretation of the observed data, and their significance in terms of eruption forecasting.

The session will provide an opportunity to discuss volcanic activity from a monitoring perspective on a wide range of volcanoes. We therefore encourage submission of papers that are easily understandable to a broad, multi-disciplinary audience.

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Co-organized as AS3.28/NH2.7/SM5.9
Convener: Jurgen Neuberg | Co-conveners: Evgenia Ilyinskaya, Thomas R. Walter
Orals
| Thu, 11 Apr, 08:30–12:30
 
Room -2.21
Posters
| Attendance Thu, 11 Apr, 14:00–15:45
 
Hall X2
GMPV5.12

Volcanic edifices consist of diverse suites of pyroclastic successions, originated from primary (e.g. tephra fall, lava flow) and reworking processes (e.g. alluvial activity). The volcanoclastic sediments have witnessed the magma fragmentation and subsequent transportation mechanism as flow, turbulent current or tephra fall. Such pyroclastic deposits therefore hold key evidence to understand volcano-stratigraphy, eruption re-occurrence rates, and dominant transportation modes. This session aims to discuss sedimentary and volcanological aspects of volcanoclastic deposits. We invite presentations covering (1) field-based description and interpretation of volcanoclastic sediments, (2) reconstruction of eruptive and sediment transport processes, (3) experimental and numerical simulation of volcano-related sediment transport, and (4) development of new methodologies to understand the formation of volcanoclastic sediments. These topics are critical to understand volcanic phenomena and to improve upon existing volcanic monitoring efforts, and to forecast volcanic hazards in the future.

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Co-organized as NH2.9/SSP3.12, co-sponsored by IAVCEI-CVS
Convener: Gabor Kereszturi | Co-conveners: Eric Breard, Andrea Di Capua, Gonca Gençalioğlu-Kuşcu, Alison Rust
Posters
| Attendance Tue, 09 Apr, 16:15–18:00
 
Hall X2
GMPV5.15

Glaciers and volcanoes interact in a number of ways, including instances where volcanic/geothermal activity alters glacier dynamics or mass balance, via subglacial eruptions or the deposition of supraglacial tephra. Glaciers can also impact volcanism, for example by directly influencing mechanisms of individual eruptions resulting in the construction of distinct edifices. Glaciers may also influence patterns of eruptive activity when mass balance changes adjust the load on volcanic systems. However, because of the remoteness of many glacio-volcanic environments, these interactions remain poorly understood.
In these complex settings, hazards associated with glacier-volcano interaction can vary from lava flows to volcanic ash, lahars, pyroclastic flows or glacial outburst floods. These can happen consecutively or simultaneously and affect not only the earth, but also glaciers, rivers and the atmosphere. As accumulating, melting, ripping or drifting glaciers generate signals as well as degassing, inflating/ deflating or erupting volcanoes, the challenge is to study, understand and ultimately discriminate these potentially coexisting signals. We wish to fully include geophysical observations of current and recent events with geological observations and interpretations of deposits of past events.
We invite contributions that deal with the mitigation of the hazards associated with ice-covered volcanoes, that improve the understanding of signals generated by ice-covered volcanoes, or studies focused on volcanic impacts on glaciers and vice versa. Research on recent activity is especially welcomed. This includes geological observations e.g. of deposits in the field or remote-sensing data, together with experimental and modelling approaches. We also invite contributions on past activity and glaciovolcanic deposits. We aim to bring together scientists from volcanology, glaciology, seismology, geodesy, hydrology, geomorphology and atmospheric science in order to enable a broad discussion and interaction.

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Co-organized as CR5.9/GM9.5/NH2.11
Convener: Iestyn Barr | Co-conveners: Eva Eibl, Magnus Tumi Gudmundsson, Kelly Russell, gioachino roberti, Adelina Geyer, Brent Ward
Orals
| Mon, 08 Apr, 16:15–18:00
 
Room -2.91
Posters
| Attendance Mon, 08 Apr, 14:00–15:45
 
Hall X2
GMPV5.5 | PICO Media

Volcanic Islands are environments created by the growth of volcanoes in the sea, modified by geologic, environmental, biological and human activity. They are highly varied in geology, terrain, environment and social makeup. They are fragile environments in that they respond rapidly to global or local changes in a way that links geology, social activity and environment. Dealing with a complex object such as volcanic island requires a multidisciplinary approach on their on-land and submarine processes that crosses scientific, social and economic boundaries. From a geological and geophysical perspective there are numerous aspects that need to be addressed to acquire a comprehensive picture of how volcanic islands are born, grow up, evolve and die. These include their geodynamic setting, magmatism, volcanism, hydrothermalism, tectonics, and erosion and material transport, as well as their associated hazards and risks, environmental change record, or energy and economic resources. With the aim at integrating all this multidisciplinary research into a single forum of discussion, we offer this scientific session on Volcanic Islands, in which any geological and geophysical research on such complex environments will be more than welcome.

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Co-organized as GD6.12/NH2.12
Convener: Joan Marti | Co-conveners: Patrick Bachelery, Armann Hoskuldsson
PICOs
| Tue, 09 Apr, 08:30–10:15
 
PICO spot 3