Thermodynamics of a fast-moving Greenlandic outlet glacier revealed by fiber-optic distributed temperature sensing
Funding: This research was funded by the European Research Council as part of the RESPONDER project under the European Union’s Horizon 2020 research and innovation program (grant 683043). R.L. and T.R.C. were supported by Natural Environment Research Council Doctoral Training Partnership studentship...
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Online Access: | http://hdl.handle.net/10023/27372 https://doi.org/10.1126/sciadv.abe7136 |
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ftstandrewserep:oai:research-repository.st-andrews.ac.uk:10023/27372 2023-07-02T03:32:19+02:00 Thermodynamics of a fast-moving Greenlandic outlet glacier revealed by fiber-optic distributed temperature sensing Law, Robert Christoffersen, Poul Hubbard, Bryn Doyle, Samuel H Chudley, Thomas R Schoonman, Charlotte M Bougamont, Marion des Tombe, Bas Schilperoort, Bart Kechavarzi, Cedric Booth, Adam Young, Tun Jan University of St Andrews. School of Geography & Sustainable Development 2023-04-10T11:30:04Z 11 application/pdf http://hdl.handle.net/10023/27372 https://doi.org/10.1126/sciadv.abe7136 eng eng Science Advances Law , R , Christoffersen , P , Hubbard , B , Doyle , S H , Chudley , T R , Schoonman , C M , Bougamont , M , des Tombe , B , Schilperoort , B , Kechavarzi , C , Booth , A & Young , T J 2021 , ' Thermodynamics of a fast-moving Greenlandic outlet glacier revealed by fiber-optic distributed temperature sensing ' , Science Advances , vol. 7 , no. 20 , eabe7136 . https://doi.org/10.1126/sciadv.abe7136 2375-2548 PURE: 284055058 PURE UUID: 1877d739-28c3-4205-8141-9f5962ce7797 PubMed: 33990322 PubMedCentral: PMC8121432 Scopus: 85105914760 ORCID: /0000-0001-5865-3459/work/133187405 http://hdl.handle.net/10023/27372 https://doi.org/10.1126/sciadv.abe7136 Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY). GB Physical geography GE Environmental Sciences DAS SDG 14 - Life Below Water MCC GB GE Journal article 2023 ftstandrewserep https://doi.org/10.1126/sciadv.abe7136 2023-06-13T18:28:43Z Funding: This research was funded by the European Research Council as part of the RESPONDER project under the European Union’s Horizon 2020 research and innovation program (grant 683043). R.L. and T.R.C. were supported by Natural Environment Research Council Doctoral Training Partnership studentships (grant NE/ L002507/1). B.H. was supported by a HEFCW/Aberystwyth University Capital Equipment Grant. 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. Publisher PDF Peer reviewed Article in Journal/Newspaper glacier Greenland greenlandic Kujalleq Sermeq Kujalleq University of St Andrews: Digital Research Repository Greenland Kujalleq ENVELOPE(-46.037,-46.037,60.719,60.719) Science Advances 7 20 |
institution |
Open Polar |
collection |
University of St Andrews: Digital Research Repository |
op_collection_id |
ftstandrewserep |
language |
English |
topic |
GB Physical geography GE Environmental Sciences DAS SDG 14 - Life Below Water MCC GB GE |
spellingShingle |
GB Physical geography GE Environmental Sciences DAS SDG 14 - Life Below Water MCC GB GE Law, Robert Christoffersen, Poul Hubbard, Bryn Doyle, Samuel H Chudley, Thomas R Schoonman, Charlotte M Bougamont, Marion des Tombe, Bas Schilperoort, Bart Kechavarzi, Cedric Booth, Adam Young, Tun Jan Thermodynamics of a fast-moving Greenlandic outlet glacier revealed by fiber-optic distributed temperature sensing |
topic_facet |
GB Physical geography GE Environmental Sciences DAS SDG 14 - Life Below Water MCC GB GE |
description |
Funding: This research was funded by the European Research Council as part of the RESPONDER project under the European Union’s Horizon 2020 research and innovation program (grant 683043). R.L. and T.R.C. were supported by Natural Environment Research Council Doctoral Training Partnership studentships (grant NE/ L002507/1). B.H. was supported by a HEFCW/Aberystwyth University Capital Equipment Grant. 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. Publisher PDF Peer reviewed |
author2 |
University of St Andrews. School of Geography & Sustainable Development |
format |
Article in Journal/Newspaper |
author |
Law, Robert Christoffersen, Poul Hubbard, Bryn Doyle, Samuel H Chudley, Thomas R Schoonman, Charlotte M Bougamont, Marion des Tombe, Bas Schilperoort, Bart Kechavarzi, Cedric Booth, Adam Young, Tun Jan |
author_facet |
Law, Robert Christoffersen, Poul Hubbard, Bryn Doyle, Samuel H Chudley, Thomas R Schoonman, Charlotte M Bougamont, Marion des Tombe, Bas Schilperoort, Bart Kechavarzi, Cedric Booth, Adam Young, Tun Jan |
author_sort |
Law, Robert |
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 |
2023 |
url |
http://hdl.handle.net/10023/27372 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 |
Science Advances Law , R , Christoffersen , P , Hubbard , B , Doyle , S H , Chudley , T R , Schoonman , C M , Bougamont , M , des Tombe , B , Schilperoort , B , Kechavarzi , C , Booth , A & Young , T J 2021 , ' Thermodynamics of a fast-moving Greenlandic outlet glacier revealed by fiber-optic distributed temperature sensing ' , Science Advances , vol. 7 , no. 20 , eabe7136 . https://doi.org/10.1126/sciadv.abe7136 2375-2548 PURE: 284055058 PURE UUID: 1877d739-28c3-4205-8141-9f5962ce7797 PubMed: 33990322 PubMedCentral: PMC8121432 Scopus: 85105914760 ORCID: /0000-0001-5865-3459/work/133187405 http://hdl.handle.net/10023/27372 https://doi.org/10.1126/sciadv.abe7136 |
op_rights |
Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY). |
op_doi |
https://doi.org/10.1126/sciadv.abe7136 |
container_title |
Science Advances |
container_volume |
7 |
container_issue |
20 |
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1770271859520045056 |