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 10Be cosmogenic exposure ages to constrain...
Published in: | Arctic, Antarctic, and Alpine Research |
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Taylor & Francis Group
2022
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Online Access: | https://doi.org/10.1080/15230430.2022.2094607 https://doaj.org/article/19377fa6f40e4ac4899406324b4bc205 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:19377fa6f40e4ac4899406324b4bc205 2023-05-15T14:14:21+02:00 Late glacial and Holocene glaciation history of North and Northeast Greenland Nicolaj K. Larsen Anne Sofie Søndergaard Laura B. Levy Astrid Strunk Daniel S. Skov Anders Bjørk Shfaqat A. Khan Jesper Olsen 2022-12-01 https://doi.org/10.1080/15230430.2022.2094607 https://doaj.org/article/19377fa6f40e4ac4899406324b4bc205 en eng Taylor & Francis Group doi:10.1080/15230430.2022.2094607 1938-4246 1523-0430 https://doaj.org/article/19377fa6f40e4ac4899406324b4bc205 undefined Arctic, Antarctic, and Alpine Research, Vol 54, Iss 1, Pp 294-313 (2022) Greenland Ice Sheet cosmogenic exposure dating deglaciation envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2022 fttriple https://doi.org/10.1080/15230430.2022.2094607 2023-01-22T19:05:50Z 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 10Be 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 Unknown Greenland Arctic, Antarctic, and Alpine Research 54 1 294 313 |
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Open Polar |
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language |
English |
topic |
Greenland Ice Sheet cosmogenic exposure dating deglaciation envir geo |
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Greenland Ice Sheet cosmogenic exposure dating deglaciation envir geo Nicolaj K. Larsen Anne Sofie Søndergaard Laura B. Levy Astrid Strunk Daniel S. Skov Anders Bjørk Shfaqat A. Khan Jesper Olsen Late glacial and Holocene glaciation history of North and Northeast Greenland |
topic_facet |
Greenland Ice Sheet cosmogenic exposure dating deglaciation envir geo |
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 10Be 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 |
Nicolaj K. Larsen Anne Sofie Søndergaard Laura B. Levy Astrid Strunk Daniel S. Skov Anders Bjørk Shfaqat A. Khan Jesper Olsen |
author_facet |
Nicolaj K. Larsen Anne Sofie Søndergaard Laura B. Levy Astrid Strunk Daniel S. Skov Anders Bjørk Shfaqat A. Khan Jesper Olsen |
author_sort |
Nicolaj K. Larsen |
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 |
publisher |
Taylor & Francis Group |
publishDate |
2022 |
url |
https://doi.org/10.1080/15230430.2022.2094607 https://doaj.org/article/19377fa6f40e4ac4899406324b4bc205 |
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 |
Arctic, Antarctic, and Alpine Research, Vol 54, Iss 1, Pp 294-313 (2022) |
op_relation |
doi:10.1080/15230430.2022.2094607 1938-4246 1523-0430 https://doaj.org/article/19377fa6f40e4ac4899406324b4bc205 |
op_rights |
undefined |
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 |
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1766286861646430208 |