Japan Geoscience Union Meeting 2016

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International Session (Oral)

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

[M-TT05] Cryoseismology - a new proxy for detecting surface environmental variations of the Earth -

Thu. May 26, 2016 1:45 PM - 3:15 PM 202 (2F)

Convener:*Masaki Kanao(National Institute of Polar Research), Seiji Tsuboi(JAMSTEC, Center for Earth Information Science and Technology), Takeo Ito(Earthquake and Volcano Research Center, Graduate School of Environmental Studies, Nagoya University), Douglas Wiens(Washington University in St Louis), Sridhar Anandakrishnan(Penn State University), Jeremy Winberry(Central Washington University), Kent Anderson(Incorporated Research Institutions for Seismology), Chair:Seiji Tsuboi(JAMSTEC, Center for Earth Information Science and Technology), Masaki Kanao(National Institute of Polar Research)

Several kinds of environmental signals associated with ocean ? cryosphere - solid earth systems have recently been detected in bi-polar regions. Ice-related seismic motions for small magnitude events are generally named ice-quakes (ice-shocks) and can be generated by glacially related 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 caps. Cryoseismic waves are likely to be influenced by variations in environmental conditions, and the continuous study of their time-space variability provides indirect evidence of climate change. As glacial earthquakes are the most prominent phenomena found recently in polar regions, in particular on the Greenland in this 21st century, the new innovative studies from seismology are expected by long-term monitoring under extreme conditions in the Earth's environment.
Taking these issues into account, the conveners are willing to 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. It is particularly encouraged to have contributions based on seismic signals involving the dynamics of ice sheets, sea-ice, icebergs and glaciers. Although the glacial earthquakes are the most prominent evidence found recently in polar regions, all related topics involving polar seismology are welcome, such as studies of crust and mantle structure in the area, comparison of tectonic and glacier-related seismicity, recent triggered earthquakes and active volcanoes, glacial isostatic adjustment (GIA), harmonic tremor associated with cryoseismic events, etc.

2:00 PM - 2:15 PM

[MTT05-06] Seismic interferometry using broadband continuous seismic waveform data from the Greenland ice sheet

*Genti Toyokuni1, Hiroshi Takenaka2, Masaki Kanao3, Seiji Tsuboi4, Yoko Tono5 (1.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University, 2.Graduate School of Natural Science & Technology, Okayama University, 3.National Institute of Polar Research, 4.Japan Agency for Marine-Earth Science and Technology, 5.Ministry of Education, Culture, Sports, Science and Technology)

2:15 PM - 2:45 PM

[MTT05-07] Seismic-infrasound monitoring of a tidewater calving glacier (Bowdoin, Greenland)

★Invited papers

*Evgeny A. Podolskiy1, Shin Sugiyama2, Martin Funk3, Riccardo Genco4, Masahiro Minowa2, Fabian Walter3, Shun Tsutaki2,5, Maurizio Ripepe4 (1.Arctic Research Center, Hokkaido University, Sapporo, 2.Institute of Low Temperature Science, Hokkaido University, Sapporo, 3.Laboratory of Hydraulics, Hydrology and Glaciology, ETH Zurich, Zurich, 4.Dipartimento di Scienze della Terra, Università di Firenze, Florence, 5.Arctic Environment Research Center, National Institute of Polar Research, Tokyo)