Beryllium-10 measurements from Washington Land, Petermann Glacier, northwest Greenland, Widespread early Holocene deglaciation 2015-2020
Constraining the Greenland Ice Sheet (GIS) response to past climate change is imperative for understanding modern ice sheet sensitivity to rising temperatures. In this 2015-2020 study, we investigate the response of the GIS to warming during the last deglaciation across the currently ice-free area o...
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2020
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dataone:doi:10.18739/A25717P2B 2024-06-03T18:46:51+00:00 Beryllium-10 measurements from Washington Land, Petermann Glacier, northwest Greenland, Widespread early Holocene deglaciation 2015-2020 Shaun A. Marcott Washington Land, Greenland ENVELOPE(-67.5,-59.3,81.3,80.0) BEGINDATE: 2015-01-01T00:00:00Z ENDDATE: 2020-01-01T00:00:00Z 2020-01-01T00:00:00Z https://doi.org/10.18739/A25717P2B unknown Arctic Data Center Glaciers Glaciation Dataset 2020 dataone:urn:node:ARCTIC https://doi.org/10.18739/A25717P2B 2024-06-03T18:16:34Z Constraining the Greenland Ice Sheet (GIS) response to past climate change is imperative for understanding modern ice sheet sensitivity to rising temperatures. In this 2015-2020 study, we investigate the response of the GIS to warming during the last deglaciation across the currently ice-free area of Washington Land in northwest Greenland. We apply Beryllium-10 (10Be) cosmogenic surface exposure dating to glacially-transported boulders deposited across the landscape, the interpretation of the dates offering insight into GIS retreat after the Last Glacial Maximum. We find that the northwestern sector of the GIS sustained full ice cover across Washington Land until ∼11 kiloannum (ka), then began thinning, with widespread ice retreat culminating by 8.5 ± 1.1 ka. The record of our new exposure ages indicates that deglaciation occurred 2–3 ka after abrupt warming at the end of the Younger Dryas cold period, which suggests a delayed response of the GIS to this regional warming. Dataset glacier Greenland Ice Sheet Petermann glacier Washington land Arctic Data Center (via DataONE) Greenland Washington Land ENVELOPE(-66.000,-66.000,80.250,80.250) ENVELOPE(-67.5,-59.3,81.3,80.0) |
institution |
Open Polar |
collection |
Arctic Data Center (via DataONE) |
op_collection_id |
dataone:urn:node:ARCTIC |
language |
unknown |
topic |
Glaciers Glaciation |
spellingShingle |
Glaciers Glaciation Shaun A. Marcott Beryllium-10 measurements from Washington Land, Petermann Glacier, northwest Greenland, Widespread early Holocene deglaciation 2015-2020 |
topic_facet |
Glaciers Glaciation |
description |
Constraining the Greenland Ice Sheet (GIS) response to past climate change is imperative for understanding modern ice sheet sensitivity to rising temperatures. In this 2015-2020 study, we investigate the response of the GIS to warming during the last deglaciation across the currently ice-free area of Washington Land in northwest Greenland. We apply Beryllium-10 (10Be) cosmogenic surface exposure dating to glacially-transported boulders deposited across the landscape, the interpretation of the dates offering insight into GIS retreat after the Last Glacial Maximum. We find that the northwestern sector of the GIS sustained full ice cover across Washington Land until ∼11 kiloannum (ka), then began thinning, with widespread ice retreat culminating by 8.5 ± 1.1 ka. The record of our new exposure ages indicates that deglaciation occurred 2–3 ka after abrupt warming at the end of the Younger Dryas cold period, which suggests a delayed response of the GIS to this regional warming. |
format |
Dataset |
author |
Shaun A. Marcott |
author_facet |
Shaun A. Marcott |
author_sort |
Shaun A. Marcott |
title |
Beryllium-10 measurements from Washington Land, Petermann Glacier, northwest Greenland, Widespread early Holocene deglaciation 2015-2020 |
title_short |
Beryllium-10 measurements from Washington Land, Petermann Glacier, northwest Greenland, Widespread early Holocene deglaciation 2015-2020 |
title_full |
Beryllium-10 measurements from Washington Land, Petermann Glacier, northwest Greenland, Widespread early Holocene deglaciation 2015-2020 |
title_fullStr |
Beryllium-10 measurements from Washington Land, Petermann Glacier, northwest Greenland, Widespread early Holocene deglaciation 2015-2020 |
title_full_unstemmed |
Beryllium-10 measurements from Washington Land, Petermann Glacier, northwest Greenland, Widespread early Holocene deglaciation 2015-2020 |
title_sort |
beryllium-10 measurements from washington land, petermann glacier, northwest greenland, widespread early holocene deglaciation 2015-2020 |
publisher |
Arctic Data Center |
publishDate |
2020 |
url |
https://doi.org/10.18739/A25717P2B |
op_coverage |
Washington Land, Greenland ENVELOPE(-67.5,-59.3,81.3,80.0) BEGINDATE: 2015-01-01T00:00:00Z ENDDATE: 2020-01-01T00:00:00Z |
long_lat |
ENVELOPE(-66.000,-66.000,80.250,80.250) ENVELOPE(-67.5,-59.3,81.3,80.0) |
geographic |
Greenland Washington Land |
geographic_facet |
Greenland Washington Land |
genre |
glacier Greenland Ice Sheet Petermann glacier Washington land |
genre_facet |
glacier Greenland Ice Sheet Petermann glacier Washington land |
op_doi |
https://doi.org/10.18739/A25717P2B |
_version_ |
1800871993963184128 |