Calving rates at tidewater glaciers vary strongly with ocean temperature
TerraSAR-X data were provided by DLR (project OCE1503), and funded by the Conoco Phillips-Lundin Northern Area Program through the CRIOS project (Calving Rates and Impact on Sea level). A.L. and S.B. are affiliated to the Climate Change Consortium of Wales (C3W). Mooring work is supported by the UK...
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ftstandrewserep:oai:research-repository.st-andrews.ac.uk:10023/7747 2023-07-02T03:32:20+02:00 Calving rates at tidewater glaciers vary strongly with ocean temperature Luckman, A. Benn, Doug I Cottier, F. Bevan, S. Nilsen, F. Inall, M. University of St Andrews. Bell-Edwards Geographic Data Institute University of St Andrews. School of Geography & Sustainable Development University of St Andrews. Geography & Sustainable Development 2015-11-05T15:10:04Z 7 application/pdf http://hdl.handle.net/10023/7747 https://doi.org/10.1038/ncomms9566 eng eng Nature Communications Luckman , A , Benn , D I , Cottier , F , Bevan , S , Nilsen , F & Inall , M 2015 , ' Calving rates at tidewater glaciers vary strongly with ocean temperature ' , Nature Communications , vol. 6 , 8566 . https://doi.org/10.1038/ncomms9566 2041-1723 PURE: 228702228 PURE UUID: bd8cf7f6-0466-46b1-b141-cbd989ec1098 Scopus: 84944112102 WOS: 000364932600013 ORCID: /0000-0002-3604-0886/work/64697366 http://hdl.handle.net/10023/7747 https://doi.org/10.1038/ncomms9566 Copyright 2015 the Authors. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ GC Oceanography GE Environmental Sciences 3rd-NDAS BDC R2C GC GE Journal article 2015 ftstandrewserep https://doi.org/10.1038/ncomms9566 2023-06-13T18:26:49Z TerraSAR-X data were provided by DLR (project OCE1503), and funded by the Conoco Phillips-Lundin Northern Area Program through the CRIOS project (Calving Rates and Impact on Sea level). A.L. and S.B. are affiliated to the Climate Change Consortium of Wales (C3W). Mooring work is supported by the UK Natural Environment Research Council (Oceans 2025 and Northern Sea Program) and the Research Council of Norway (projects Cleopatra: 178766, Cleopatra II: 216537, and Circa: 214271/F20). Contribution by F.C. was undertaken through the Scottish Alliance for Geoscience Environment and Society (SAGES). Rates of ice mass loss at the calving margins of tidewater glaciers (frontal ablation rates) are a key uncertainty in sea level rise projections. Measurements are difficult because mass lost is replaced by ice flow at variable rates, and frontal ablation incorporates sub-aerial calving, and submarine melt and calving. Here we derive frontal ablation rates for three dynamically contrasting glaciers in Svalbard from an unusually dense series of satellite images. We combine ocean data, ice-front position and terminus velocity to investigate controls on frontal ablation. We find that frontal ablation is not dependent on ice dynamics, nor reduced by glacier surface freeze-up, but varies strongly with sub-surface water temperature. We conclude that calving proceeds by melt undercutting and ice-front collapse, a process that may dominate frontal ablation where submarine melt can outpace ice flow. Our findings illustrate the potential for deriving simple models of tidewater glacier response to oceanographic forcing. Publisher PDF Peer reviewed Article in Journal/Newspaper glacier glacier Svalbard Tidewater University of St Andrews: Digital Research Repository Norway Svalbard Nature Communications 6 1 |
institution |
Open Polar |
collection |
University of St Andrews: Digital Research Repository |
op_collection_id |
ftstandrewserep |
language |
English |
topic |
GC Oceanography GE Environmental Sciences 3rd-NDAS BDC R2C GC GE |
spellingShingle |
GC Oceanography GE Environmental Sciences 3rd-NDAS BDC R2C GC GE Luckman, A. Benn, Doug I Cottier, F. Bevan, S. Nilsen, F. Inall, M. Calving rates at tidewater glaciers vary strongly with ocean temperature |
topic_facet |
GC Oceanography GE Environmental Sciences 3rd-NDAS BDC R2C GC GE |
description |
TerraSAR-X data were provided by DLR (project OCE1503), and funded by the Conoco Phillips-Lundin Northern Area Program through the CRIOS project (Calving Rates and Impact on Sea level). A.L. and S.B. are affiliated to the Climate Change Consortium of Wales (C3W). Mooring work is supported by the UK Natural Environment Research Council (Oceans 2025 and Northern Sea Program) and the Research Council of Norway (projects Cleopatra: 178766, Cleopatra II: 216537, and Circa: 214271/F20). Contribution by F.C. was undertaken through the Scottish Alliance for Geoscience Environment and Society (SAGES). Rates of ice mass loss at the calving margins of tidewater glaciers (frontal ablation rates) are a key uncertainty in sea level rise projections. Measurements are difficult because mass lost is replaced by ice flow at variable rates, and frontal ablation incorporates sub-aerial calving, and submarine melt and calving. Here we derive frontal ablation rates for three dynamically contrasting glaciers in Svalbard from an unusually dense series of satellite images. We combine ocean data, ice-front position and terminus velocity to investigate controls on frontal ablation. We find that frontal ablation is not dependent on ice dynamics, nor reduced by glacier surface freeze-up, but varies strongly with sub-surface water temperature. We conclude that calving proceeds by melt undercutting and ice-front collapse, a process that may dominate frontal ablation where submarine melt can outpace ice flow. Our findings illustrate the potential for deriving simple models of tidewater glacier response to oceanographic forcing. Publisher PDF Peer reviewed |
author2 |
University of St Andrews. Bell-Edwards Geographic Data Institute University of St Andrews. School of Geography & Sustainable Development University of St Andrews. Geography & Sustainable Development |
format |
Article in Journal/Newspaper |
author |
Luckman, A. Benn, Doug I Cottier, F. Bevan, S. Nilsen, F. Inall, M. |
author_facet |
Luckman, A. Benn, Doug I Cottier, F. Bevan, S. Nilsen, F. Inall, M. |
author_sort |
Luckman, A. |
title |
Calving rates at tidewater glaciers vary strongly with ocean temperature |
title_short |
Calving rates at tidewater glaciers vary strongly with ocean temperature |
title_full |
Calving rates at tidewater glaciers vary strongly with ocean temperature |
title_fullStr |
Calving rates at tidewater glaciers vary strongly with ocean temperature |
title_full_unstemmed |
Calving rates at tidewater glaciers vary strongly with ocean temperature |
title_sort |
calving rates at tidewater glaciers vary strongly with ocean temperature |
publishDate |
2015 |
url |
http://hdl.handle.net/10023/7747 https://doi.org/10.1038/ncomms9566 |
geographic |
Norway Svalbard |
geographic_facet |
Norway Svalbard |
genre |
glacier glacier Svalbard Tidewater |
genre_facet |
glacier glacier Svalbard Tidewater |
op_relation |
Nature Communications Luckman , A , Benn , D I , Cottier , F , Bevan , S , Nilsen , F & Inall , M 2015 , ' Calving rates at tidewater glaciers vary strongly with ocean temperature ' , Nature Communications , vol. 6 , 8566 . https://doi.org/10.1038/ncomms9566 2041-1723 PURE: 228702228 PURE UUID: bd8cf7f6-0466-46b1-b141-cbd989ec1098 Scopus: 84944112102 WOS: 000364932600013 ORCID: /0000-0002-3604-0886/work/64697366 http://hdl.handle.net/10023/7747 https://doi.org/10.1038/ncomms9566 |
op_rights |
Copyright 2015 the Authors. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1038/ncomms9566 |
container_title |
Nature Communications |
container_volume |
6 |
container_issue |
1 |
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1770271874112028672 |