Thermodynamics of a fast-moving Greenlandic outlet glacier revealed by fiber-optic distributed temperature sensing
Measurements of ice temperature provide crucial constraints on ice viscosity and the thermodynamic processes occurring within a glacier. However, such measurements are presently limited by a small number of relatively coarse-spatial-resolution borehole records, especially for ice sheets. Here, we ad...
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fttudelft:oai:tudelft.nl:uuid:0505980b-ec35-4fff-977a-2bb8cb694677 2024-02-11T10:04:00+01:00 Thermodynamics of a fast-moving Greenlandic outlet glacier revealed by fiber-optic distributed temperature sensing Law, Robert (author) Christoffersen, Poul (author) Hubbard, Bryn (author) Doyle, Samuel H. (author) Chudley, Thomas R. (author) Schoonman, Charlotte M. (author) Bougamont, Marion (author) des Tombe, B.F. (author) Schilperoort, B. (author) Kechavarzi, Cedric (author) Booth, Adam (author) Young, Tun Jan (author) 2021 http://resolver.tudelft.nl/uuid:0505980b-ec35-4fff-977a-2bb8cb694677 https://doi.org/10.1126/sciadv.abe7136 en eng http://www.scopus.com/inward/record.url?scp=85105914760&partnerID=8YFLogxK Science Advances--2375-2548--245af1bf-f25d-4bef-a12e-b3737d656c21 http://resolver.tudelft.nl/uuid:0505980b-ec35-4fff-977a-2bb8cb694677 https://doi.org/10.1126/sciadv.abe7136 © 2021 Robert Law, Poul Christoffersen, Bryn Hubbard, Samuel H. Doyle, Thomas R. Chudley, Charlotte M. Schoonman, Marion Bougamont, B.F. des Tombe, B. Schilperoort, Cedric Kechavarzi, Adam Booth, Tun Jan Young journal article 2021 fttudelft https://doi.org/10.1126/sciadv.abe7136 2024-01-24T23:31:54Z Measurements of ice temperature provide crucial constraints on ice viscosity and the thermodynamic processes occurring within a glacier. However, such measurements are presently limited by a small number of relatively coarse-spatial-resolution borehole records, especially for ice sheets. Here, we advance our understanding of glacier thermodynamics with an exceptionally high-vertical-resolution (∼0.65 m), distributed-fiber-optic temperature-sensing profile from a 1043-m borehole drilled to the base of Sermeq Kujalleq (Store Glacier), Greenland. We report substantial but isolated strain heating within interglacial-phase ice at 208 to 242 m depth together with strongly heterogeneous ice deformation in glacial-phase ice below 889 m. We also observe a high-strain interface between glacial- and interglacial-phase ice and a 73-m-thick temperate basal layer, interpreted as locally formed and important for the glacier's fast motion. These findings demonstrate notable spatial heterogeneity, both vertically and at the catchment scale, in the conditions facilitating the fast motion of marine-terminating glaciers in Greenland. Water Resources Geoscience and Remote Sensing Article in Journal/Newspaper glacier Greenland greenlandic Kujalleq Sermeq Kujalleq Delft University of Technology: Institutional Repository Greenland Kujalleq ENVELOPE(-46.037,-46.037,60.719,60.719) Science Advances 7 20 eabe7136 |
institution |
Open Polar |
collection |
Delft University of Technology: Institutional Repository |
op_collection_id |
fttudelft |
language |
English |
description |
Measurements of ice temperature provide crucial constraints on ice viscosity and the thermodynamic processes occurring within a glacier. However, such measurements are presently limited by a small number of relatively coarse-spatial-resolution borehole records, especially for ice sheets. Here, we advance our understanding of glacier thermodynamics with an exceptionally high-vertical-resolution (∼0.65 m), distributed-fiber-optic temperature-sensing profile from a 1043-m borehole drilled to the base of Sermeq Kujalleq (Store Glacier), Greenland. We report substantial but isolated strain heating within interglacial-phase ice at 208 to 242 m depth together with strongly heterogeneous ice deformation in glacial-phase ice below 889 m. We also observe a high-strain interface between glacial- and interglacial-phase ice and a 73-m-thick temperate basal layer, interpreted as locally formed and important for the glacier's fast motion. These findings demonstrate notable spatial heterogeneity, both vertically and at the catchment scale, in the conditions facilitating the fast motion of marine-terminating glaciers in Greenland. Water Resources Geoscience and Remote Sensing |
format |
Article in Journal/Newspaper |
author |
Law, Robert (author) Christoffersen, Poul (author) Hubbard, Bryn (author) Doyle, Samuel H. (author) Chudley, Thomas R. (author) Schoonman, Charlotte M. (author) Bougamont, Marion (author) des Tombe, B.F. (author) Schilperoort, B. (author) Kechavarzi, Cedric (author) Booth, Adam (author) Young, Tun Jan (author) |
spellingShingle |
Law, Robert (author) Christoffersen, Poul (author) Hubbard, Bryn (author) Doyle, Samuel H. (author) Chudley, Thomas R. (author) Schoonman, Charlotte M. (author) Bougamont, Marion (author) des Tombe, B.F. (author) Schilperoort, B. (author) Kechavarzi, Cedric (author) Booth, Adam (author) Young, Tun Jan (author) Thermodynamics of a fast-moving Greenlandic outlet glacier revealed by fiber-optic distributed temperature sensing |
author_facet |
Law, Robert (author) Christoffersen, Poul (author) Hubbard, Bryn (author) Doyle, Samuel H. (author) Chudley, Thomas R. (author) Schoonman, Charlotte M. (author) Bougamont, Marion (author) des Tombe, B.F. (author) Schilperoort, B. (author) Kechavarzi, Cedric (author) Booth, Adam (author) Young, Tun Jan (author) |
author_sort |
Law, Robert (author) |
title |
Thermodynamics of a fast-moving Greenlandic outlet glacier revealed by fiber-optic distributed temperature sensing |
title_short |
Thermodynamics of a fast-moving Greenlandic outlet glacier revealed by fiber-optic distributed temperature sensing |
title_full |
Thermodynamics of a fast-moving Greenlandic outlet glacier revealed by fiber-optic distributed temperature sensing |
title_fullStr |
Thermodynamics of a fast-moving Greenlandic outlet glacier revealed by fiber-optic distributed temperature sensing |
title_full_unstemmed |
Thermodynamics of a fast-moving Greenlandic outlet glacier revealed by fiber-optic distributed temperature sensing |
title_sort |
thermodynamics of a fast-moving greenlandic outlet glacier revealed by fiber-optic distributed temperature sensing |
publishDate |
2021 |
url |
http://resolver.tudelft.nl/uuid:0505980b-ec35-4fff-977a-2bb8cb694677 https://doi.org/10.1126/sciadv.abe7136 |
long_lat |
ENVELOPE(-46.037,-46.037,60.719,60.719) |
geographic |
Greenland Kujalleq |
geographic_facet |
Greenland Kujalleq |
genre |
glacier Greenland greenlandic Kujalleq Sermeq Kujalleq |
genre_facet |
glacier Greenland greenlandic Kujalleq Sermeq Kujalleq |
op_relation |
http://www.scopus.com/inward/record.url?scp=85105914760&partnerID=8YFLogxK Science Advances--2375-2548--245af1bf-f25d-4bef-a12e-b3737d656c21 http://resolver.tudelft.nl/uuid:0505980b-ec35-4fff-977a-2bb8cb694677 https://doi.org/10.1126/sciadv.abe7136 |
op_rights |
© 2021 Robert Law, Poul Christoffersen, Bryn Hubbard, Samuel H. Doyle, Thomas R. Chudley, Charlotte M. Schoonman, Marion Bougamont, B.F. des Tombe, B. Schilperoort, Cedric Kechavarzi, Adam Booth, Tun Jan Young |
op_doi |
https://doi.org/10.1126/sciadv.abe7136 |
container_title |
Science Advances |
container_volume |
7 |
container_issue |
20 |
container_start_page |
eabe7136 |
_version_ |
1790600417721188352 |