气候变化领域集成服务门户(CCPortal): Ocean-bottom and surface seismometers reveal continuous glacial tremor and slip

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DOI	10.1038/s41467-021-24142-4
	Ocean-bottom and surface seismometers reveal continuous glacial tremor and slip
	Podolskiy E.A.; Murai Y.; Kanna N.; Sugiyama S.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Shearing along subduction zones, laboratory experiments on analogue faults, and sliding along glacier beds are all associated with aseismic and co-seismic slip. In this study, an ocean-bottom seismometer is deployed near the terminus of a Greenlandic tidewater glacier, effectively insulating the signal from the extremely noisy surface seismic wavefield. Continuous, tide-modulated tremor related to ice speed is recorded at the bed of the glacier. When noise interference (for example, due to strong winds) is low, the tremor is also confirmed via analysis of seismic waveforms from surface stations. The signal resembles the tectonic tremor commonly observed during slow-earthquake events in subduction zones. We propose that the glacier sliding velocity can be retrieved from the observed seismic noise. Our approach may open new opportunities for monitoring calving-front processes in one of the most difficult-to-access cryospheric environments. © 2021, The Author(s).
语种	英语
scopus关键词	coseismic process; experimental study; microtremor; ocean bottom seismometer; seafloor; seismic wave; slip; subduction zone; tidewater glacier; wave field; Article; dynamics; earthquake; environmental monitoring; flow kinetics; friction; glacier; global positioning system; human; ice sheet; noise; sea; shear stress; signal processing; spectroscopy; surface property; tide; tsunami; velocity; water temperature; waveform; Arctic; Greenland
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250666
作者单位	Arctic Research Center, Hokkaido University, Sapporo, Japan; Graduate School of Environmental Science, Hokkaido University, Sapporo, Japan; Institute of Seismology and Volcanology, Faculty of Science, Hokkaido University, Sapporo, Japan; Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwa, Japan; Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan
推荐引用方式 GB/T 7714	Podolskiy E.A.,Murai Y.,Kanna N.,et al. Ocean-bottom and surface seismometers reveal continuous glacial tremor and slip[J],2021,12(1).
APA	Podolskiy E.A.,Murai Y.,Kanna N.,&Sugiyama S..(2021).Ocean-bottom and surface seismometers reveal continuous glacial tremor and slip.Nature Communications,12(1).
MLA	Podolskiy E.A.,et al."Ocean-bottom and surface seismometers reveal continuous glacial tremor and slip".Nature Communications 12.1(2021).