JpGU-AGU Joint Meeting 2017

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[EE] Oral

M (Multidisciplinary and Interdisciplinary) » M-TT Technology & Techniques

[M-TT37] [EE] Cryoseismology - a new proxy for detecting surface environmental variations of the Earth -

Tue. May 23, 2017 9:00 AM - 10:30 AM 202 (International Conference Hall 2F)

convener:Genti Toyokuni(Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University), Masaki Kanao(National Institute of Polar Research), Seiji Tsuboi(JAMSTEC, Center for Earth Information Science and Technology), Douglas Wiens(Washington University in St Louis), Chairperson:Seiji Tsuboi(JAMSTEC, Center for Earth Information Science and Technology), Chairperson:Genti Toyokuni(Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University)

Several kinds of environmental signals associated with ocean-cryosphere-solid earth systems have recently been detected in the Antarctic and Arctic regions. Ice-related motions that generate seismic waves are generally termed ice-quakes (ice-shocks) and can be used to study glacial dynamics. Such kinds of cryoseismic sources are classified into the movements of ice sheets, sea-ice, oceanic tide-cracks, icebergs and the calving fronts of ice streams and glaciers. Cryoseismic waves are influenced by variations in environmental conditions, and the continuous study of their spatial and temporal variability provides indirect evidence of climate change. As glacial earthquakes are among the most prominent phenomena found recently in polar regions, new innovative studies from seismology as well as longterm monitoring of seismic signals in polar regions are expected to provide important new insights.



Taking these issues into account, the conveners invite many contributions to a special session on "Cryoseismology", which will cover the recent achievements on glacial-related seismic events and associated phenomenon observed in polar regions. Contributions based on seismic signals involving the dynamics of ice sheets, sea-ice, icebergs and glaciers are particularly encouraged. All related topics involving polar seismology are welcome, such as studies of crust and mantle structure in polar regions, comparison of tectonic and glacier-related seismicity, recent triggered earthquakes and active volcanoes, glacial isostatic adjustment (GIA), and harmonic tremor associated with cryoseismic events.

9:15 AM - 9:30 AM

[MTT37-02] Recurring LP-events within a tidewater greenlandic glacier

*Evgeny A. Podolskiy1, Fabian Walter2, Shin Sugiyama3, Sebastian Heimann4, Martin Funk2, Julian Seguinot2, Riccardo Genco5, Maurizio Ripepe5 (1.Arctic Research Center, Hokkaido University, 2.Laboratory of Hydraulics, Hydrology and Glaciology (VAW), ETH Zürich, 3.Institute of Low Temperature Science, Hokkaido University, 4.GFZ German Research Centre for Geosciences, Potsdam, 5.Dipartimento di Scienze della Terra, Università di Firenze)

10:00 AM - 10:15 AM

[MTT37-05] Reference seismic and thermal models for the crust and uppermost mantle beneath Antarctica from multiple datasets

*Weisen Shen1, Douglas Wiens1, Peter Gerstoft2, Peter Bromirski2, Ralph Stephen3, Rick Aster4, Andrew Nyblade5, Paul Winberry9, Audrey Huerta9, Sridhar Anandakrishnan5, Samantha Hansen6, Terry Wilson7, David Heeszel8 (1.Washington University in St Louis, 2.University of California San Diego, 3.Woods Hole Oceanographic Institution, 4.Colorado State University, 5.Pennsylvania State University, 6.University of Alabama, 7.Ohio State University, 8.US Nuclear Regulatory Commission, 9.Central Washington University)

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