Distributed Acoustic Sensing (DAS) of Seismic Properties in a Borehole drilled on a Fast‐Flowing Greenlandic Outlet Glacier
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 fibre-optic cable. We show analyses from the first glaciological borehole DAS deployment to measure the englacial and subgla...
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ftunivcam:oai:www.repository.cam.ac.uk:1810/306900 2024-01-14T10:07:01+01:00 Distributed Acoustic Sensing (DAS) of Seismic Properties in a Borehole drilled on a Fast‐Flowing Greenlandic Outlet Glacier Booth, Adam D Christoffersen, Poul Schoonman, Charlotte Clarke, Andy Hubbard, Bryn Law, Robert Doyle, Samuel Huckerby Chudley, Thomas Russell Chalari, Athena 2020 application/pdf https://www.repository.cam.ac.uk/handle/1810/306900 https://doi.org/10.17863/CAM.53990 eng eng Wiley-Blackwell http://dx.doi.org/10.1002/essoar.10502609.1 Geophysical Research Letters https://www.repository.cam.ac.uk/handle/1810/306900 doi:10.17863/CAM.53990 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Distributed Acoustic Sensing (DAS) Vertical Seismic Profile (VSP) Greenland Ice Sheet anisotropy subglacial sediment borehole surveying Article 2020 ftunivcam https://doi.org/10.17863/CAM.53990 2023-12-21T23:21:17Z 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 fibre-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 1043 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. Article in Journal/Newspaper glacier Greenland greenlandic Ice Sheet Apollo - University of Cambridge Repository Greenland |
institution |
Open Polar |
collection |
Apollo - University of Cambridge Repository |
op_collection_id |
ftunivcam |
language |
English |
topic |
Distributed Acoustic Sensing (DAS) Vertical Seismic Profile (VSP) Greenland Ice Sheet anisotropy subglacial sediment borehole surveying |
spellingShingle |
Distributed Acoustic Sensing (DAS) Vertical Seismic Profile (VSP) Greenland Ice Sheet anisotropy subglacial sediment borehole surveying Booth, Adam D Christoffersen, Poul Schoonman, Charlotte Clarke, Andy Hubbard, Bryn Law, Robert Doyle, Samuel Huckerby Chudley, Thomas Russell Chalari, Athena Distributed Acoustic Sensing (DAS) of Seismic Properties in a Borehole drilled on a Fast‐Flowing Greenlandic Outlet Glacier |
topic_facet |
Distributed Acoustic Sensing (DAS) Vertical Seismic Profile (VSP) Greenland Ice Sheet anisotropy subglacial sediment borehole surveying |
description |
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 fibre-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 1043 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. |
format |
Article in Journal/Newspaper |
author |
Booth, Adam D Christoffersen, Poul Schoonman, Charlotte Clarke, Andy Hubbard, Bryn Law, Robert Doyle, Samuel Huckerby Chudley, Thomas Russell Chalari, Athena |
author_facet |
Booth, Adam D Christoffersen, Poul Schoonman, Charlotte Clarke, Andy Hubbard, Bryn Law, Robert Doyle, Samuel Huckerby Chudley, Thomas Russell Chalari, Athena |
author_sort |
Booth, Adam D |
title |
Distributed Acoustic Sensing (DAS) of Seismic Properties in a Borehole drilled on a Fast‐Flowing Greenlandic Outlet Glacier |
title_short |
Distributed Acoustic Sensing (DAS) of Seismic Properties in a Borehole drilled on a Fast‐Flowing Greenlandic Outlet Glacier |
title_full |
Distributed Acoustic Sensing (DAS) of Seismic Properties in a Borehole drilled on a Fast‐Flowing Greenlandic Outlet Glacier |
title_fullStr |
Distributed Acoustic Sensing (DAS) of Seismic Properties in a Borehole drilled on a Fast‐Flowing Greenlandic Outlet Glacier |
title_full_unstemmed |
Distributed Acoustic Sensing (DAS) of Seismic Properties in a Borehole drilled on a Fast‐Flowing Greenlandic Outlet Glacier |
title_sort |
distributed acoustic sensing (das) of seismic properties in a borehole drilled on a fast‐flowing greenlandic outlet glacier |
publisher |
Wiley-Blackwell |
publishDate |
2020 |
url |
https://www.repository.cam.ac.uk/handle/1810/306900 https://doi.org/10.17863/CAM.53990 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland greenlandic Ice Sheet |
genre_facet |
glacier Greenland greenlandic Ice Sheet |
op_relation |
https://www.repository.cam.ac.uk/handle/1810/306900 doi:10.17863/CAM.53990 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.17863/CAM.53990 |
_version_ |
1788061429891334144 |