Late glacial and Holocene glaciation history of North and Northeast Greenland
Northeast Greenland is the place where the Greenland Ice Sheet (GrIS) experienced the largest areal changes since the Last Glacial Maximum. However, the age constraints of the last deglaciation are in some areas sparse. In this study, we use forty-seven new 10 Be cosmogenic exposure ages to constrai...
Published in: | Arctic, Antarctic, and Alpine Research |
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Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2022
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Online Access: | https://curis.ku.dk/portal/da/publications/late-glacial-and-holocene-glaciation-history-of-north-and-northeast-greenland(fd0049f2-fc96-4506-9649-1f26bc3476f9).html https://doi.org/10.1080/15230430.2022.2094607 http://www.scopus.com/inward/record.url?scp=85136785877&partnerID=8YFLogxK |
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ftcopenhagenunip:oai:pure.atira.dk:publications/fd0049f2-fc96-4506-9649-1f26bc3476f9 2023-05-15T14:14:38+02:00 Late glacial and Holocene glaciation history of North and Northeast Greenland Larsen, Nicolaj K. Søndergaard, Anne Sofie Levy, Laura B. Strunk, Astrid Skov, Daniel S. Bjørk, Anders Khan, Shfaqat A. Olsen, Jesper 2022 https://curis.ku.dk/portal/da/publications/late-glacial-and-holocene-glaciation-history-of-north-and-northeast-greenland(fd0049f2-fc96-4506-9649-1f26bc3476f9).html https://doi.org/10.1080/15230430.2022.2094607 http://www.scopus.com/inward/record.url?scp=85136785877&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Larsen , N K , Søndergaard , A S , Levy , L B , Strunk , A , Skov , D S , Bjørk , A , Khan , S A & Olsen , J 2022 , ' Late glacial and Holocene glaciation history of North and Northeast Greenland ' , Arctic, Antarctic, and Alpine Research , vol. 54 , no. 1 , pp. 294-313 . https://doi.org/10.1080/15230430.2022.2094607 cosmogenic exposure dating deglaciation Greenland Ice Sheet article 2022 ftcopenhagenunip https://doi.org/10.1080/15230430.2022.2094607 2022-09-21T22:52:44Z Northeast Greenland is the place where the Greenland Ice Sheet (GrIS) experienced the largest areal changes since the Last Glacial Maximum. However, the age constraints of the last deglaciation are in some areas sparse. In this study, we use forty-seven new 10 Be cosmogenic exposure ages to constrain the deglaciation of the present-day ice-free areas in Northeast Greenland. Our results show that the outer coast region was deglaciated between 12.8 ± 0.6 and 11.5 ± 0.2 ka and the region close to the present ice margin was deglaciated 2 to 4 ka later between 9.2 ± 0.3 to 8.6 ± 0.3 ka. By combining our new results with previously published data from North and Northeast Greenland, we find that the ice sheet advanced to the shelf edge between 26 and 20 cal. ka BP. The outer coast was deglaciated between 12.8 and 9.7 ka and the present ice extent was reached between 10.8 to 5.8 ka. The ice margin continued to retreat farther inland during the Middle Holocene before it readvanced toward its Little Ice Age position. The deglaciation was probably forced by a combination of increased atmospheric and ocean temperatures, but local topography also played an important role. These results add to the growing knowledge about the glaciation history of the GrIS and add useful constraints for future ice sheet models. Article in Journal/Newspaper Antarctic and Alpine Research Arctic Greenland Ice Sheet University of Copenhagen: Research Greenland Arctic, Antarctic, and Alpine Research 54 1 294 313 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
cosmogenic exposure dating deglaciation Greenland Ice Sheet |
spellingShingle |
cosmogenic exposure dating deglaciation Greenland Ice Sheet Larsen, Nicolaj K. Søndergaard, Anne Sofie Levy, Laura B. Strunk, Astrid Skov, Daniel S. Bjørk, Anders Khan, Shfaqat A. Olsen, Jesper Late glacial and Holocene glaciation history of North and Northeast Greenland |
topic_facet |
cosmogenic exposure dating deglaciation Greenland Ice Sheet |
description |
Northeast Greenland is the place where the Greenland Ice Sheet (GrIS) experienced the largest areal changes since the Last Glacial Maximum. However, the age constraints of the last deglaciation are in some areas sparse. In this study, we use forty-seven new 10 Be cosmogenic exposure ages to constrain the deglaciation of the present-day ice-free areas in Northeast Greenland. Our results show that the outer coast region was deglaciated between 12.8 ± 0.6 and 11.5 ± 0.2 ka and the region close to the present ice margin was deglaciated 2 to 4 ka later between 9.2 ± 0.3 to 8.6 ± 0.3 ka. By combining our new results with previously published data from North and Northeast Greenland, we find that the ice sheet advanced to the shelf edge between 26 and 20 cal. ka BP. The outer coast was deglaciated between 12.8 and 9.7 ka and the present ice extent was reached between 10.8 to 5.8 ka. The ice margin continued to retreat farther inland during the Middle Holocene before it readvanced toward its Little Ice Age position. The deglaciation was probably forced by a combination of increased atmospheric and ocean temperatures, but local topography also played an important role. These results add to the growing knowledge about the glaciation history of the GrIS and add useful constraints for future ice sheet models. |
format |
Article in Journal/Newspaper |
author |
Larsen, Nicolaj K. Søndergaard, Anne Sofie Levy, Laura B. Strunk, Astrid Skov, Daniel S. Bjørk, Anders Khan, Shfaqat A. Olsen, Jesper |
author_facet |
Larsen, Nicolaj K. Søndergaard, Anne Sofie Levy, Laura B. Strunk, Astrid Skov, Daniel S. Bjørk, Anders Khan, Shfaqat A. Olsen, Jesper |
author_sort |
Larsen, Nicolaj K. |
title |
Late glacial and Holocene glaciation history of North and Northeast Greenland |
title_short |
Late glacial and Holocene glaciation history of North and Northeast Greenland |
title_full |
Late glacial and Holocene glaciation history of North and Northeast Greenland |
title_fullStr |
Late glacial and Holocene glaciation history of North and Northeast Greenland |
title_full_unstemmed |
Late glacial and Holocene glaciation history of North and Northeast Greenland |
title_sort |
late glacial and holocene glaciation history of north and northeast greenland |
publishDate |
2022 |
url |
https://curis.ku.dk/portal/da/publications/late-glacial-and-holocene-glaciation-history-of-north-and-northeast-greenland(fd0049f2-fc96-4506-9649-1f26bc3476f9).html https://doi.org/10.1080/15230430.2022.2094607 http://www.scopus.com/inward/record.url?scp=85136785877&partnerID=8YFLogxK |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Antarctic and Alpine Research Arctic Greenland Ice Sheet |
genre_facet |
Antarctic and Alpine Research Arctic Greenland Ice Sheet |
op_source |
Larsen , N K , Søndergaard , A S , Levy , L B , Strunk , A , Skov , D S , Bjørk , A , Khan , S A & Olsen , J 2022 , ' Late glacial and Holocene glaciation history of North and Northeast Greenland ' , Arctic, Antarctic, and Alpine Research , vol. 54 , no. 1 , pp. 294-313 . https://doi.org/10.1080/15230430.2022.2094607 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1080/15230430.2022.2094607 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
54 |
container_issue |
1 |
container_start_page |
294 |
op_container_end_page |
313 |
_version_ |
1766286994214748160 |