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Glacial Hazard Monitoring with Seismology (GlaHMSeis)

Applicant Walter Fabian
Number 157551
Funding scheme SNSF Professorships
Research institution Versuchsanstalt für Wasserbau, Hydrologie und Glaziologie ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Hydrology, Limnology, Glaciology
Start/End 01.04.2015 - 31.03.2019
Approved amount 1'436'152.00
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All Disciplines (2)

Discipline
Hydrology, Limnology, Glaciology
Geophysics

Keywords (4)

seismology; glaciers; natural hazards; climate change

Lay Summary (German)

Lead
Wenn Gletscher sich in steilem Gelände befinden oder grössere Wassermengen stauen, dann entstehen gefährliche Instabilitäten. So stellen Gletscherabbrüche und Gletscherseeausbrüche ein schwer kalkulierbares Risiko in praktisch allen hochgelegenden alpinen Regionen der Welt dar. In diesem Projekt untersuchen wir seismische Daten, um dem Gefahrenpotential solcher glaziologischen Naturgefahren entgegenzuwirken. Ein Schwerpunkt unserer Messungen und Datenanalysen ist das seismische Hintergrundrauschen, welches stark von der strukturellen Integrität der Eismasse abhängt. Das seismische Hintergrundrauschen birgt deswegen ein noch nicht ausgeschöpftes Potential, um Abbrüche und Kollapse instabiler Gletscher zu verstehen und vorherzusagen.
Lay summary

AIMS

Das Hauptziel dieses Projektes ist es, aufgrund von Änderungen im Hintergrundrauschen den Zeitpunkt und Umfang eines Gletscherabbruchs oder Eisdammkollapses vorherzusagen. Dazu bedienen wir uns moderner Methoden der seismischen Interferometrie, um "in den Gletscher hineinzuschauen", ohne eine aktive Quelle, wie z.B. Explosionen, zu verwenden. Die seismischen Daten werden auf oder neben instabilen Gletschern in der Schweiz erhoben. Des Weiteren untersuchen wir bestehende seismische Datensätze um zu klären, wie anfällig instabile Gletscher auf Erdbebenwellen reagieren.

 

SCIENTIFIC AND SOCIETAL CONTEXT

Um gefährliche Gletscher zu überwachen, werden gegenwärtig fast ausschliesslich Eisoberflächen beobachtet. Das Innere eines Gletschers ist für die meisten Messmethoden unzugänglich, obwohl gerade hier wichtige Prozesse stattfinden, die die Eisstabilität beeinflussen. Die hier vorgeschlagenen Messungen des seismischen Hintergrundrauschens sollen diese Lücke füllen und somit neue Erkenntnisse über Instabilitäten liefern. Somit soll dieses Projekt einen Grundstein legen, um neue Überwachungsmethoden für Gletschergefahren zu entwickeln, von denen der alpine Raum während gegenwärtiger Klimaänderungen besonders betroffen ist.

 

Direct link to Lay Summary Last update: 03.05.2016

Responsible applicant and co-applicants

Employees

Publications

Publication
Crack wave resonances within the basal water layer
Gräff Dominik, Walter Fabian, Lipovsky Bradley P. (2019), Crack wave resonances within the basal water layer, in Annals of Glaciology, 1-9.
Monitoring Greenland ice sheet buoyancy-driven calving discharge using glacial earthquakes
Montagner Jean-Paul, Castelnau Olivier, Stutzmann Eléonore, Bonnet Pauline, Ralaiarisoa Velotioana Jean-Luc, Bevan Suzanne, Luckman Adrian, Sergeant Amandine, Mangeney Anne, Yastrebov Vladislav A., Walter Fabian (2019), Monitoring Greenland ice sheet buoyancy-driven calving discharge using glacial earthquakes, in Annals of Glaciology, 1-21.
Infrasound Array Analysis of Debris Flow Activity and Implication for Early Warning
Marchetti E., Walter F., Barfucci G., Genco R., Wenner M., Ripepe M., McArdell B., Price C. (2019), Infrasound Array Analysis of Debris Flow Activity and Implication for Early Warning, in Journal of Geophysical Research: Earth Surface, 124(2), 567-587.
Joint geodetic and seismic analysis of surface crevassing near a seasonal glacier-dammed lake at Gornergletscher, Switzerland
Garcia Louis, Luttrell Karen, Kilb Debi, Walter Fabian (2019), Joint geodetic and seismic analysis of surface crevassing near a seasonal glacier-dammed lake at Gornergletscher, Switzerland, in Annals of Glaciology, 1-13.
Effects of geometry on the seismic wavefield of Alpine glaciers
Preiswerk Lukas E., Michel Clotaire, Walter Fabian, Fäh Donat (2018), Effects of geometry on the seismic wavefield of Alpine glaciers, in Annals of Glaciology, 1-13.
Effects of geometry on the seismic wavefield of Alpine glaciers
Preiswerk Lukas E., Michel Clotaire, Walter Fabian, Fäh Donat (2018), Effects of geometry on the seismic wavefield of Alpine glaciers, in Annals of Glaciology, 1-13.
Crevasse-induced Rayleigh-wave azimuthal anisotropy on Glacier de la Plaine Morte, Switzerland
Lindner Fabian, Laske Gabi, Walter Fabian, Doran Adrian K. (2018), Crevasse-induced Rayleigh-wave azimuthal anisotropy on Glacier de la Plaine Morte, Switzerland, in Annals of Glaciology, 1-16.
High‐Frequency (>2 Hz) Ambient Seismic Noise on High‐Melt Glaciers: Green's Function Estimation and Source Characterization
Preiswerk Lukas E., Walter Fabian (2018), High‐Frequency (>2 Hz) Ambient Seismic Noise on High‐Melt Glaciers: Green's Function Estimation and Source Characterization, in Journal of Geophysical Research: Earth Surface, 123(8), 1667-1681.
Automatic identification of alpine mass movements by a combination of seismic and infrasound sensors
Schimmel Andreas, Hübl Johannes, McArdell Brian, Walter Fabian (2018), Automatic identification of alpine mass movements by a combination of seismic and infrasound sensors, in Sensors, 18(5), 1658.
Towards monitoring the englacial fracture state using virtual-reflector seismology
Lindner Fabian, Weemstra Cornelis, Walter Fabian, Hadziioannou Céline (2018), Towards monitoring the englacial fracture state using virtual-reflector seismology, in Geophysical Journal International, 214(2), 825-844.
Testing seismic amplitude source location for fast debris-flow detection at Illgraben, Switzerland
Walter Fabian, Burtin Arnaud, McArdell Brian, Hovius Niels, Weder Bianca, Turowski Jens (2017), Testing seismic amplitude source location for fast debris-flow detection at Illgraben, Switzerland, in Natural Hazards and Earth System Sciences, 17, 1-17.
Das neue Feld der Cryo-Seismologie: Das Beben im Eis
Walter Fabian (2017), Das neue Feld der Cryo-Seismologie: Das Beben im Eis, in Physik unserer Zeit, 172-177.
Investigating calving front dynamics with a local seismic-infrasound network
Podolskiy Evgeniy, Genco R., Sugiyama S., Walter F., Funk M., Minowa S., Tsutaki S., Ripepe M. (2017), Investigating calving front dynamics with a local seismic-infrasound network, in The Greenland Ice Sheet and its Interaction with the Climate System, Low Temperature Science Volume, 15-36.
Seismic and infrasound monitoring of Bowdoin Glacier, Greenland
Podolskiy Evgeny, Genco Riccardo, Walter Fabian, Funk Martin, Minowa Masahiro, Tsutaki Shun, Ripepe Maurizio (2017), Seismic and infrasound monitoring of Bowdoin Glacier, Greenland, in Low Temperature Science, 15-36.
Cryoseismology
Podolskiy Evgeniy, Walter Fabian (2016), Cryoseismology, in Reviews of Geophysics, 54.
Seismic Moulin Tremor
Roeoesli Claudia, Walter Fabian, Ampuero Jean-Paul, Kissling Edi (2016), Seismic Moulin Tremor, in Journal of Geophysical Research - Solid Earth, 5838-5858.
Tide-modulated ice flow variations drive seismicity near the calving front of Bowdoin Glacier, Greenland
Podolskiy Evgeny A., Sugiyama Shin, Funk Martin, Walter Fabian, Genco Riccardo, Tsutaki Shun, Minowa Masahiro, Ripepe Maurizio (2016), Tide-modulated ice flow variations drive seismicity near the calving front of Bowdoin Glacier, Greenland, in Geophysical Research Letters, 43(5), 2036-2044.
Monitoring unstable parts in the ice-covered Weissmies northwest face
Preiswerk Lukas, Walter Fabian, Anandakrishnan Sridhar, Barfucci Giulia, Beutel Jan, Burkett Peter G., Dalban Canassy Pierre, Funk Martin, Limpach Philippe, Marchetti Emanuele, Meier Lorenz, Neyer Fabian (2015), Monitoring unstable parts in the ice-covered Weissmies northwest face, in Interpraevent 2016, 434-443.

Collaboration

Group / person Country
Types of collaboration
Observatoire royal de Belgique - Brussels Belgium (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Institute of Environmental Engineering / ETH Zurich Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
Geopraevent AG Switzerland (Europe)
- Publication
- Research Infrastructure
- Industry/business/other use-inspired collaboration
Équipe mécanique des failles/Institut des Sciences de la Terre France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Engineering Seismology Group/Swiss Seismological Service Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Institut für Geophysik, Universität Hamburg Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Arctic Research Center, Institute for Low Temperature Science / Hokkaido Univserity Japan (Asia)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Institut de Physique du Globe de Paris France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Earthquake Monitoring Group/Swiss Seismological Service Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
Università degli studi di Firenze Italy (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
California Institute of Technology United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Swiss Federal Institute for Forest, Snow and Landscape Research WSL Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Department of Geosciences/Penn State University United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
- Exchange of personnel
Induced Seismicity/Swiss Seismological Service Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Scripps Institution of Oceanography/Univeristy of California San Diego United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
Department of Earth Sciences / University of Firenze Italy (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Chemnitzer Werkstoffmechanik GmbH Germany (Europe)
- Industry/business/other use-inspired collaboration
Instrument Pool, Geomorphology Group / GFZ Helmholtz Zentrum Potsdam Germany (Europe)
- Research Infrastructure
Technische Universiteit Delft Netherlands (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Swiss Geosciences Meeting Poster Locating and monitoring glaciohydraulic tremors on Glacier de la Plaine Morte, Switzerland 01.12.2018 Bern, Switzerland Lindner Fabian;
Swiss Geosciences Meeting Talk given at a conference What does ambient seismic noise tell us about glacial crevassing? 01.12.2018 Bern, Switzerland Preiswerk Lukas;
New Advances in Geophysics: The Future of Passive Seismic Acquisition", Conference organized by the British Geophysical Association, Edinburgh Poster A large-N passive seismic array on Glacier d’Argentière, France: Observations, signals and potentials 13.11.2018 Edinburth, Great Britain and Northern Ireland Lindner Fabian;
European Seismological Commission Talk given at a conference COMBINED BOREHOLE AND PASSIVE SEISMIC INVESTIGATIONS OF THE SUBGLACIAL ENVIRONMENT 02.09.2018 Valletta, Malta Walter Fabian;
European Seismological Commission Talk given at a conference What does ambient seismic noise tell us about glacial crevassing? 02.09.2018 Valletta, Malta Preiswerk Lukas;
TIDES Meeting Individual talk High-frequency (> 10 Hz) Rayleigh-wave azimuthal anisotropy on Glacier de la Plaine Morte, Switzerland 05.07.2018 Prag, Czech Republic Lindner Fabian;
2018 EGU General Assembly Talk given at a conference Passive seismic monitoring of the subglacial drainage system of Glacier de la Plaine Morte, Switzerland 08.04.2018 Wien, Austria Lindner Fabian;
2018 EGU General Assembly - Wien Talk given at a conference Seismic Analysis of the August 2017 Landslide on Piz Cengalo (Switzerland) 08.04.2018 Wien, Austria Walter Fabian;
2017 AGU Fall Meeting Talk given at a conference Monitoring the englacial fracture state using virtual-reflector seismology 11.12.2017 New Orleans, United States of America Lindner Fabian;
2017 AGU Fall Meeting Poster Analysis of surface waves from ambient vibrations on Alpine glaciers in Switzerland 11.12.2017 New Orleans, United States of America Preiswerk Lukas;
2017 AGU Fall Meeting Poster Seismic azimuthal anisotropy in crevasse fields 11.12.2017 New Orleans, United States of America Lindner Fabian;
15th Swiss Geoscience Meeting 2017 Poster Seismic Noise Interferometry on Ice 17.11.2017 Davos, Switzerland Preiswerk Lukas;
15th Swiss Geoscience Meeting Talk given at a conference Monitoring alpine mass movement with seismology and infrasound 17.11.2017 Davos, Switzerland Walter Fabian;
15th Swiss Geoscience Meeting 2017 Poster Seismic azimuthal anisotropy in crevasse fields 17.11.2017 Davos, Switzerland Lindner Fabian;
Globalizing Polar Issues – Swiss Polar Institute Poster Seismic investigations of a glacier’s weathering crust 12.09.2017 Crans Montana, Switzerland Lindner Fabian; Walter Fabian;
2017 Glacial Seismology Training School Poster Glacial seismology observatory Glacier de la Plaine Morte (Switzerland) 11.06.2017 Fort Collins, Colorado, United States of America Lindner Fabian;
2017 Glacial Seismology Training School Poster Green’s function estimation from high-frequency (>1 Hz) ambient noise on high-melt glaciers 11.06.2017 Ft. Collins, United States of America Preiswerk Lukas;
2017 Glacial Seismology Training School Talk given at a conference The Microseismicity of Glacier Sliding 11.06.2017 Fort Collins, Colorado, United States of America Walter Fabian;
D-BAUG workshop on natural hazards – D-BAUG ETH Zürich Talk given at a conference Seismic monitoring of the 2016 outburst flood of Lac des Faverges on Glacier de la Plaine Morte 08.06.2017 Zurich, Switzerland Lindner Fabian;
EGU Galileo conference: From process to signal – advancing environmental seismology. Poster Rapid detection and location of debris flow initiation at Illgraben, Switzerland 06.06.2017 Ohlstadt, Germany Walter Fabian;
EGU General Assembly Poster Seismic Investigation of the Glacier de la Plaine Morte, Switzerland 24.04.2017 Wien, Austria Lindner Fabian; Walter Fabian;
EGU General Assembly Talk given at a conference Cryoseismology 24.04.2017 Vienna, Austria Walter Fabian;
EGU General Assembly Talk given at a conference The Microseismicity of Glacier Sliding 24.04.2017 Vienna, Austria Walter Fabian;
77. Jahrestagung der Deutschen Geophysikalischen Gesellschaft Poster Seismic Investigation of the Glacier de la Plaine Morte, Switzerland 27.03.2017 Potsdam, Germany Lindner Fabian; Walter Fabian;
Alpine Glaciology Meeting Talk given at a conference Icefalls from the Eiger West Face monitored by interferometric radar and seismometers 03.02.2017 Zurich, Switzerland Preiswerk Lukas; Walter Fabian;
Alpine Glaciology Meeting Talk given at a conference Seismic monitoring of the 2016 outburst flood of Lac des Faverges on Glacier de la Plaine Morte 03.02.2017 Zurich, Switzerland Walter Fabian; Lindner Fabian;
Alpine Glaciology Meeting Talk given at a conference Cryoseismology 03.02.2017 Zurich, Switzerland Walter Fabian;
Talk at the Delft University of Technology Individual talk Seismic Interferometry by Multidimensional Deconvolution: A Feasibility Study for Glacial Environments 26.01.2017 Delft, Netherlands Lindner Fabian; Walter Fabian;
49th American Geophysical Union Fall Meeting Talk given at a conference Monitoring unstable glaciers with seismic noise interferometry 10.12.2016 San Francisco, United States of America Preiswerk Lukas; Walter Fabian;
Swiss Geoscience Meeting Talk given at a conference Seismic monitoring of the 2016 outburst flood of Lac des Faverges on Glacier de la Plaine Morte 19.11.2016 Genf, Switzerland Lindner Fabian; Walter Fabian;
Swiss Geoscience Meeting Talk given at a conference Rapid detection and location of debris flow initiation at Illgraben, Switzerland 19.11.2016 Geneva, Switzerland Walter Fabian;
Swiss Geoscience Meeting Talk given at a conference Icefalls from the Eiger West Face monitored by interferometric radar and seismometers 19.11.2016 Genf, Switzerland Walter Fabian; Preiswerk Lukas;
Importance of calving for mass budget of Arctic glaciers - Sopot Scientific Seminar on Ice Calving in the Arctic (3SICA) Talk given at a conference What does seismology tell us about calving glaciers? 14.11.2016 Sopot, Poland Walter Fabian;
Seminar der Abteilung Seismologie und Gravimetrie der Koniglichen Sternwarte von Belgien Individual talk Seismology on unstable glaciers 28.10.2016 Brüssel, Belgium Preiswerk Lukas; Walter Fabian;
Seminar Series at the Swiss Seismological Service Individual talk Frontiers in Cryo-Seismology 04.10.2016 Zurich, Switzerland Preiswerk Lukas; Walter Fabian; Lindner Fabian;
2nd TIDES Training School Talk given at a conference Seismic noise interferometry on unstable glaciers 21.09.2016 Sesimbra, Portugal Preiswerk Lukas; Walter Fabian;
2nd TIDES Training School Talk given at a conference Seismic Interferometry by Multidimensional Deconvolution: A Feasibility Study for Glacial Environments 21.09.2016 Sesimbra, Portugal Walter Fabian; Lindner Fabian;
Greenland ice sheet mass loss and its impact on global climate change Talk given at a conference What does seismology tell us about calving glaciers? (invited) 22.03.2016 Sapporo, Japan Walter Fabian;
76. Jahrestagung der Deutschen Geophysikalischen Gesellschaft Poster Glacial hydraulics revealed by ambient seismic noise 14.03.2016 Münster, Germany Lindner Fabian;
76. Jahrestagung der Deutschen Geophysikalischen Gesellschaft Poster Seismic Noise Interferometry on Ice 14.03.2016 Münster, Germany Preiswerk Lukas;
Alpine Glaciology Meeting 2016 Poster Monitoring Outburst Floods using Seismology 25.02.2016 München, Germany Lindner Fabian;
5th Munich Earth Skience School Talk given at a conference Using Seismic Noise for Unstable Glacier Monitoring 22.02.2016 Sudelfeld, Germany Preiswerk Lukas;
Colloquium in Glaciology Talk given at a conference Monitoring tools in modern glaciology 07.01.2016 Zürich, Switzerland Walter Fabian;
AGU Fall Meeting Talk given at a conference Glacier seismology: eavesdropping on the ice-bed interface (Invited) 14.12.2015 San Francisco, United States of America Walter Fabian;
13th Swiss Geoscience Meeting Talk given at a conference Monitoring unstable parts in the ice covered Weissmies north-west face 20.11.2015 Basel, Switzerland Preiswerk Lukas;
Glacier, Ice Sheet and Snow Seismology Session at 26th IUGG General Assembly 2015 Poster Multi-seasonal seismic monitoring of the fracture drainage system at the base of Rhonegletscher, Switzerland 22.06.2015 Prag, Czech Republic Walter Fabian;
Forschungsforum Kryosphäre und Geomorphologie & Wasser und Klima Individual talk Recent Developments in Glacier Seismology 05.05.2015 Zürich, Switzerland Walter Fabian;


Self-organised

Title Date Place
Glacier, Ice Sheet and Snow Seismology Session at 26th IUGG General Assembly 2015 22.06.2015 Prag, Czech Republic

Knowledge transfer events

Active participation

Title Type of contribution Date Place Persons involved
Vortrag zu glaziologischer Forschung, Gemeinde Lenk (BE) Talk 29.03.2017 Lenk, Switzerland Lindner Fabian; Walter Fabian;


Communication with the public

Communication Title Media Place Year
Print (books, brochures, leaflets) „Perspektiven Geowissenschaften“ German-speaking Switzerland 2018
Media relations: radio, television Documentary movie „Agassizhorn – Berg der Schande“ German-speaking Switzerland 2018
Media relations: radio, television Temps Présent RTS Western Switzerland 2018
Talks/events/exhibitions focusTerra Polarforschung German-speaking Switzerland 2017
Talks/events/exhibitions Scientifica Zürcher Wissenschaftstage German-speaking Switzerland 2017
Media relations: print media, online media Jetzt hat der Favergesee Rekordgrösse Berner Zeitung German-speaking Switzerland 2016

Awards

Title Year
"SEP-NGP-Prize for Young Researchers for the best poster presentation in the Symposia Session Cryospheric Sciences" 2018
Student Award for oustanding oral presentation 2018
Cryosphere Innovation Award 2017
DGG Best Poster Award 2016
Outstanding Student Paper Award am American Geophysical Union Fall Meeting 2016
SEP-NGP Prize for Young Researchers for the First Best Communication in the Symposia Session “Cryospheric Sciences” of the 13th Swiss Geoscience Meeting (SGM) 2015

Associated projects

Number Title Start Funding scheme
183719 Seismic investigations of englacial and subglacial environments 01.04.2019 SNSF Professorships

Abstract

Over the last decade, glacier seismology has undergone rapid developmental leaps forward. Advances in seismic instrumentation, numerical modeling and data management have made seismology an indispensible tool in glaciological investigations of basal sliding, crevasse formation, iceberg calving and glacier hydraulics. Seismometers can remotely track changes of a glacier's fracture state at a temporal resolution far superior to conventional glaciological monitoring. This makes seismic monitoring an attractive candidate for early warning and mitigation methods of glacial hazards.Despite the many advances, current seismic monitoring of hazardous glaciers poses critical challenges and limitations. Whereas individual "icequakes" are easily detectable and often locatable, complexities in seismograms can inhibit accurate and unambiguous determination of source mechanisms. Furthermore, background seismicity on a glacier is typically high, especially during the melt season. Naturally occurring icequakes may therefore mask important precursory signals of break-off events, which threaten human lives and infrastructure in the valley.Using innovative seismic noise monitoring, I propose to investigate three important classes of glacial hazards, namely hanging glaciers, unstable steep glacier tongues and glacier-dammed lakes. Focusing on the continuous ambient seismic field and wave propagation of icequakes, I will monitor structural changes within hazardous glaciers to more reliably predict catastrophic failure events. This approach will harness state-of-the-art techniques from passive crustal and engineering seismology and greatly reduce the requirement for active seismic and electromagnetic sources typically used for glacier subsurface imaging. In a pioneering research effort the proposed techniques will be applied to the following mechanisms which play central roles in glacier stability: The evolution of the englacial damage state, the evolution of the subglacial drainage system of a steep glacier tongue and resonant vibrations of prone-to-fall portions of high-altitude hanging glaciers.Most parts of the proposed project will involve month-long to yearlong seismometer deployments on or near each of the three unstable glacier types. In addition, another project component will mine eleven seismic data sets from Alpine glaciers, including three multi-year deployments, to answer the question if earthquakes can remotely trigger catastrophic glacier collapses. This question has been subject to debate for decades, yet no clear quantitative information on earthquake shaking thresholds to induce significant englacial fracturing exists.In this proposal I request financial support for seismometer purchase, fieldwork logistics and the hiring of two PhD students and a part-time technician. This will allow implementing a first-of-its-kind monitoring program of unstable glaciers using only passive seismic techniques. Moreover, the proposed imaging and monitoring approaches will resolve changes of a glacier's subsurface structure at a time resolution far superior to laborious and expensive active source methods. The expected project results will not only be a crucial advance in glacier-related hazard monitoring, they will also provide new means to "look into" a glacier and study glacier ice properties. Compared to the rather heterogeneous Earth's crust, where much of the recent studies of ambient seismic noise have been performed, glacier ice is a highly homogeneous medium. The proposed investigations therefore introduce a new natural laboratory for ambient noise monitoring facilitating new method development and testing.This proposed work as an SNSF professor constitutes the exciting opportunity to continue my interdisciplinary work in glacier seismology in the context of natural hazards. Besides, I can make valuable experiences as a university-level instructor and in the supervision of a research team including two PhD students and a technician. The Laboratory of Hydrology, Hydraulics and Glaciology (VAW) of ETH Zurich is the ideal host institute as it can provide the necessary expertise on glacial hazards and fieldwork as well as additional glaciological instrumentation. The long and successful history of close collaboration between VAW and the Swiss Seismological Service (SED) furthermore makes ETH Zurich second to none in terms of expertise, existing scientific infrastructure and proximity to glacier study sites. The proposed research will thus meet ideal scientific infrastructure and advance glacier hazard monitoring at a time when the importance of seismology in glaciological research is continually growing.
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