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DOI | 10.1029/2020GL088148 |
Distributed Acoustic Sensing of Seismic Properties in a Borehole Drilled on a Fast-Flowing Greenlandic Outlet Glacier | |
Booth, Adam D.1; Christoffersen, Poul2; Schoonman, Charlotte2; Clarke, Andy3; Hubbard, Bryn4; Law, Robert2; Doyle, Samuel H.4; Chudley, Thomas R.2; Chalari, Athena3 | |
2020-06-04 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:13 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Wales |
英文摘要 | Distributed Acoustic Sensing (DAS) is a new technology in which seismic energy is detected, at high spatial and temporal resolution, using the propagation of laser pulses in a fiber-optic cable. We show analyses from the first glaciological borehole DAS deployment to measure the englacial and subglacial seismic properties of Store Glacier, a fast-flowing outlet of the Greenland Ice Sheet. We record compressional and shear waves in 1,043 m-deep vertical seismic profiles, sampled at 10 m vertical resolution, and detect a transition from isotropic to anisotropic ice at 84% of ice thickness, consistent with the Holocene-Wisconsin transition. We identify subglacial reflections originating from the base of a 20 m-thick layer of consolidated sediment and, from attenuation measurements, interpret temperate ice in the lowermost 100 m of the glacier. Our findings highlight the promising potential of DAS technology to constrain the seismic properties of glaciers and ice sheets. |
英文关键词 | Distributed Acoustic Sensing (DAS) Vertical Seismic Profile (VSP) Greenland Ice Sheet anisotropy subglacial sediment borehole surveying |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000551465400052 |
WOS关键词 | PHYSICAL CONDITIONS ; WAVE-PROPAGATION ; ANISOTROPIC ICE ; RUSSELL GLACIER ; STORE GLACIER ; ATTENUATION ; AMPLITUDE ; RADAR ; BED |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/273293 |
专题 | 气候变化 |
作者单位 | 1.Univ Leeds, Sch Earth & Environm, Inst Appl Geosci, Leeds, W Yorkshire, England; 2.Univ Cambridge, Scott Polar Res Inst, Dept Geog, Cambridge, England; 3.Silixa Ltd, Elstree, Herts, England; 4.Aberystwyth Univ, Dept Geog & Earth Sci, Ctr Glaciol, Aberystwyth Ceredigion, Wales |
推荐引用方式 GB/T 7714 | Booth, Adam D.,Christoffersen, Poul,Schoonman, Charlotte,et al. Distributed Acoustic Sensing of Seismic Properties in a Borehole Drilled on a Fast-Flowing Greenlandic Outlet Glacier[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(13). |
APA | Booth, Adam D..,Christoffersen, Poul.,Schoonman, Charlotte.,Clarke, Andy.,Hubbard, Bryn.,...&Chalari, Athena.(2020).Distributed Acoustic Sensing of Seismic Properties in a Borehole Drilled on a Fast-Flowing Greenlandic Outlet Glacier.GEOPHYSICAL RESEARCH LETTERS,47(13). |
MLA | Booth, Adam D.,et al."Distributed Acoustic Sensing of Seismic Properties in a Borehole Drilled on a Fast-Flowing Greenlandic Outlet Glacier".GEOPHYSICAL RESEARCH LETTERS 47.13(2020). |
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