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

Tide-modulated ice flow variations drive seismicity near the calving front of Bowdoin Glacier, Greenland

Podolskiy, Evgeny A.; Sugiyama, Shin; Funk, Martin et al.

Geophysical research letters, 2016, 43(5), 2036-2044

Permalink : https://hdl.handle.net/2115/61471

このアイテムのアクセス数:1,330件（2026-08-25 05:44 集計）

閲覧可能ファイル

ファイル	フォーマット	サイズ	閲覧回数	説明
Podolskiy_et_al-2016-Geophysical_Research_Letters	pdf	2.04 MB	678

論文情報

ファイル出力 EndNote Basic出力 Mendeley出力

アクセス権	open access
URI	https://hdl.handle.net/2115/61471
タイトル	Tide-modulated ice flow variations drive seismicity near the calving front of Bowdoin Glacier, Greenland
著者	Podolskiy, Evgeny A. ; Sugiyama, Shin ; Funk, Martin ; Walter, Fabian ; Genco, Riccardo ; Tsutaki, Shun ; Minowa, Masahiro ; Ripepe, Maurizio
著者名 Podolskiy, Evgeny A.
e-Rad_Researcher 20421951 著者名 Sugiyama, Shin
著者名 Funk, Martin
著者名 Walter, Fabian
著者名 Genco, Riccardo
著者名 Tsutaki, Shun
著者名 Minowa, Masahiro
著者名 Ripepe, Maurizio
言語	英語
キーワード	cryoseismicity
	tide
	strain rate
	icequake
	Greenland
	calving front
発行日	2016-03-16
出版者	American Geophysical Union
収録物名	Geophysical research letters
巻(号)	43(5)
ページ	2036-2044
抄録	Glacier microseismicity is a promising tool to study glacier dynamics. However, physical processes connecting seismic signals and ice dynamics are not clearly understood at present. Particularly, the relationship between tide-modulated seismicity and dynamics of calving glaciers remains elusive. Here we analyze records from an on-ice seismometer placed 250m from the calving front of Bowdoin Glacier, Greenland. Using high-frequency glacier flow speed measurements, we show that the microseismic activity is related to strain rate variations. The seismic activity correlates with longitudinal stretching measured at the glacier surface. Both higher melt rates and falling tides accelerate glacier motion and increase longitudinal stretching. Long-term microseismic monitoring could therefore provide insights on how a calving glacier's force balance and flow regime react to changes at the ice-ocean interface.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
権利情報	©2016. The Authors. Tide-modulated ice flow variations drive seismicity near the calving front of Bowdoin Glacier, Greenland, Geophys. Res. Lett.,43, 2036-2044, doi:10.1002/2016GL067743.
PISSN	0094-8276
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1002/2016GL067743