globalchange  > 科学计划与规划
DOI: 10.1002/2016GL067743
论文题名:
Tide-modulated ice flow variations drive seismicity near the calving front of Bowdoin Glacier, Greenland
作者: Podolskiy E.A.; Sugiyama S.; Funk M.; Walter F.; Genco R.; Tsutaki S.; Minowa M.; Ripepe M.
刊名: Geophysical Research Letters
ISSN: 0094-9287
EISSN: 1944-9018
出版年: 2016
卷: 43, 期:5
起始页码: 2036
结束页码: 2044
语种: 英语
英文关键词: calving front ; cryoseismicity ; Greenland ; icequake ; strain rate ; tide
Scopus关键词: Dynamics ; Ice ; Microseismic monitoring ; Seismic waves ; Seismology ; Tides ; Calving front ; Cryoseismicity ; Glacier dynamics ; Greenland ; High frequency HF ; Icequake ; Physical process ; Seismic activity ; Strain rate
英文摘要: 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 250 m 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. © 2016. The Authors.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960449665&doi=10.1002%2f2016GL067743&partnerID=40&md5=086a8f8bb6c8de46ee863bb4b36c3a87
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10250
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan

Recommended Citation:
Podolskiy E.A.,Sugiyama S.,Funk M.,et al. Tide-modulated ice flow variations drive seismicity near the calving front of Bowdoin Glacier, Greenland[J]. Geophysical Research Letters,2016-01-01,43(5).
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