Sea ice breakup and marine melt of a retreating tidewater outlet glacier in northeast Greenland (81°N)
Rising temperatures in the Arctic cause accelerated mass loss from the Greenland Ice Sheet and reduced sea ice cover. Tidewater outlet glaciers represent direct connections between glaciers and the ocean where melt rates at the ice-ocean interface are influenced by ocean temperature and circulation....
Published in: | Scientific Reports |
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Main Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
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2017
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Online Access: | https://curis.ku.dk/portal/da/publications/sea-ice-breakup-and-marine-melt-of-a-retreating-tidewater-outlet-glacier-in-northeast-greenland-81n(fa9c3838-8549-4e2c-a994-3f8e6417454e).html https://doi.org/10.1038/s41598-017-05089-3 https://curis.ku.dk/ws/files/181384288/Bendtsen_2017_Sea_ice_breakup.pdf http://www.scopus.com/inward/record.url?scp=85022335302&partnerID=8YFLogxK |
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ftcopenhagenunip:oai:pure.atira.dk:publications/fa9c3838-8549-4e2c-a994-3f8e6417454e 2024-06-09T07:43:48+00:00 Sea ice breakup and marine melt of a retreating tidewater outlet glacier in northeast Greenland (81°N) Bendtsen, Jørgen Mortensen, John Lennert, Kunuk Ehn, Jens K. Boone, Wieter Galindo, Virginie Hu, Yu Bin Dmitrenko, Igor A. Kirillov, Sergei A. Kjeldsen, Kristian Kjellerup Kristoffersen, Yngve Barber, David G. Rysgaard, Søren 2017-07-10 application/pdf https://curis.ku.dk/portal/da/publications/sea-ice-breakup-and-marine-melt-of-a-retreating-tidewater-outlet-glacier-in-northeast-greenland-81n(fa9c3838-8549-4e2c-a994-3f8e6417454e).html https://doi.org/10.1038/s41598-017-05089-3 https://curis.ku.dk/ws/files/181384288/Bendtsen_2017_Sea_ice_breakup.pdf http://www.scopus.com/inward/record.url?scp=85022335302&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Bendtsen , J , Mortensen , J , Lennert , K , Ehn , J K , Boone , W , Galindo , V , Hu , Y B , Dmitrenko , I A , Kirillov , S A , Kjeldsen , K K , Kristoffersen , Y , Barber , D G & Rysgaard , S 2017 , ' Sea ice breakup and marine melt of a retreating tidewater outlet glacier in northeast Greenland (81°N) ' , Scientific Reports , vol. 7 , 4941 . https://doi.org/10.1038/s41598-017-05089-3 article 2017 ftcopenhagenunip https://doi.org/10.1038/s41598-017-05089-3 2024-05-16T11:29:17Z Rising temperatures in the Arctic cause accelerated mass loss from the Greenland Ice Sheet and reduced sea ice cover. Tidewater outlet glaciers represent direct connections between glaciers and the ocean where melt rates at the ice-ocean interface are influenced by ocean temperature and circulation. However, few measurements exist near outlet glaciers from the northern coast towards the Arctic Ocean that has remained nearly permanently ice covered. Here we present hydrographic measurements along the terminus of a major retreating tidewater outlet glacier from Flade Isblink Ice Cap. We show that the region is characterized by a relatively large change of the seasonal freshwater content, corresponding to ∼2 m of freshwater, and that solar heating during the short open water period results in surface layer temperatures above 1 °C. Observations of temperature and salinity supported that the outlet glacier is a floating ice shelf with near-glacial subsurface temperatures at the freezing point. Melting from the surface layer significantly influenced the ice foot morphology of the glacier terminus. Hence, melting of the tidewater outlet glacier was found to be critically dependent on the retreat of sea ice adjacent to the terminus and the duration of open water. Article in Journal/Newspaper Arctic Arctic Ocean glacier Greenland Ice cap Ice Sheet Ice Shelf Sea ice Tidewater University of Copenhagen: Research Arctic Arctic Ocean Flade Isblink ENVELOPE(-15.000,-15.000,81.583,81.583) Greenland Scientific Reports 7 1 |
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Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
Rising temperatures in the Arctic cause accelerated mass loss from the Greenland Ice Sheet and reduced sea ice cover. Tidewater outlet glaciers represent direct connections between glaciers and the ocean where melt rates at the ice-ocean interface are influenced by ocean temperature and circulation. However, few measurements exist near outlet glaciers from the northern coast towards the Arctic Ocean that has remained nearly permanently ice covered. Here we present hydrographic measurements along the terminus of a major retreating tidewater outlet glacier from Flade Isblink Ice Cap. We show that the region is characterized by a relatively large change of the seasonal freshwater content, corresponding to ∼2 m of freshwater, and that solar heating during the short open water period results in surface layer temperatures above 1 °C. Observations of temperature and salinity supported that the outlet glacier is a floating ice shelf with near-glacial subsurface temperatures at the freezing point. Melting from the surface layer significantly influenced the ice foot morphology of the glacier terminus. Hence, melting of the tidewater outlet glacier was found to be critically dependent on the retreat of sea ice adjacent to the terminus and the duration of open water. |
format |
Article in Journal/Newspaper |
author |
Bendtsen, Jørgen Mortensen, John Lennert, Kunuk Ehn, Jens K. Boone, Wieter Galindo, Virginie Hu, Yu Bin Dmitrenko, Igor A. Kirillov, Sergei A. Kjeldsen, Kristian Kjellerup Kristoffersen, Yngve Barber, David G. Rysgaard, Søren |
spellingShingle |
Bendtsen, Jørgen Mortensen, John Lennert, Kunuk Ehn, Jens K. Boone, Wieter Galindo, Virginie Hu, Yu Bin Dmitrenko, Igor A. Kirillov, Sergei A. Kjeldsen, Kristian Kjellerup Kristoffersen, Yngve Barber, David G. Rysgaard, Søren Sea ice breakup and marine melt of a retreating tidewater outlet glacier in northeast Greenland (81°N) |
author_facet |
Bendtsen, Jørgen Mortensen, John Lennert, Kunuk Ehn, Jens K. Boone, Wieter Galindo, Virginie Hu, Yu Bin Dmitrenko, Igor A. Kirillov, Sergei A. Kjeldsen, Kristian Kjellerup Kristoffersen, Yngve Barber, David G. Rysgaard, Søren |
author_sort |
Bendtsen, Jørgen |
title |
Sea ice breakup and marine melt of a retreating tidewater outlet glacier in northeast Greenland (81°N) |
title_short |
Sea ice breakup and marine melt of a retreating tidewater outlet glacier in northeast Greenland (81°N) |
title_full |
Sea ice breakup and marine melt of a retreating tidewater outlet glacier in northeast Greenland (81°N) |
title_fullStr |
Sea ice breakup and marine melt of a retreating tidewater outlet glacier in northeast Greenland (81°N) |
title_full_unstemmed |
Sea ice breakup and marine melt of a retreating tidewater outlet glacier in northeast Greenland (81°N) |
title_sort |
sea ice breakup and marine melt of a retreating tidewater outlet glacier in northeast greenland (81°n) |
publishDate |
2017 |
url |
https://curis.ku.dk/portal/da/publications/sea-ice-breakup-and-marine-melt-of-a-retreating-tidewater-outlet-glacier-in-northeast-greenland-81n(fa9c3838-8549-4e2c-a994-3f8e6417454e).html https://doi.org/10.1038/s41598-017-05089-3 https://curis.ku.dk/ws/files/181384288/Bendtsen_2017_Sea_ice_breakup.pdf http://www.scopus.com/inward/record.url?scp=85022335302&partnerID=8YFLogxK |
long_lat |
ENVELOPE(-15.000,-15.000,81.583,81.583) |
geographic |
Arctic Arctic Ocean Flade Isblink Greenland |
geographic_facet |
Arctic Arctic Ocean Flade Isblink Greenland |
genre |
Arctic Arctic Ocean glacier Greenland Ice cap Ice Sheet Ice Shelf Sea ice Tidewater |
genre_facet |
Arctic Arctic Ocean glacier Greenland Ice cap Ice Sheet Ice Shelf Sea ice Tidewater |
op_source |
Bendtsen , J , Mortensen , J , Lennert , K , Ehn , J K , Boone , W , Galindo , V , Hu , Y B , Dmitrenko , I A , Kirillov , S A , Kjeldsen , K K , Kristoffersen , Y , Barber , D G & Rysgaard , S 2017 , ' Sea ice breakup and marine melt of a retreating tidewater outlet glacier in northeast Greenland (81°N) ' , Scientific Reports , vol. 7 , 4941 . https://doi.org/10.1038/s41598-017-05089-3 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41598-017-05089-3 |
container_title |
Scientific Reports |
container_volume |
7 |
container_issue |
1 |
_version_ |
1801372660391739392 |