Rapid response of Helheim Glacier, southeast Greenland, to early Holocene climate warming
Recent changes in speed, thinning, and retreat rates of marine-terminating outlet glaciers have raised concerns about the future stability of the Greenland Ice Sheet. Establishing a longer term record of outlet glacier retreat rates is essential to provide a context for present-day observations and...
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2012
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Online Access: | https://research.manchester.ac.uk/en/publications/011f6227-3b6b-4351-8e01-4f655e3aeba9 https://doi.org/10.1130/G32730.1 |
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ftumanchesterpub:oai:pure.atira.dk:publications/011f6227-3b6b-4351-8e01-4f655e3aeba9 2024-06-23T07:53:00+00:00 Rapid response of Helheim Glacier, southeast Greenland, to early Holocene climate warming Hughes, Anna L.C. Rainsley, Eleanor Murray, Tavi Fogwill, Christopher J. Schnabel, Christoph Xu, Sheng 2012-05-01 https://research.manchester.ac.uk/en/publications/011f6227-3b6b-4351-8e01-4f655e3aeba9 https://doi.org/10.1130/G32730.1 eng eng https://research.manchester.ac.uk/en/publications/011f6227-3b6b-4351-8e01-4f655e3aeba9 info:eu-repo/semantics/restrictedAccess Hughes , A L C , Rainsley , E , Murray , T , Fogwill , C J , Schnabel , C & Xu , S 2012 , ' Rapid response of Helheim Glacier, southeast Greenland, to early Holocene climate warming ' , Geology , vol. 40 , no. 5 , pp. 427-430 . https://doi.org/10.1130/G32730.1 article 2012 ftumanchesterpub https://doi.org/10.1130/G32730.1 2024-05-27T23:40:15Z Recent changes in speed, thinning, and retreat rates of marine-terminating outlet glaciers have raised concerns about the future stability of the Greenland Ice Sheet. Establishing a longer term record of outlet glacier retreat rates is essential to provide a context for present-day observations and to improve and constrain numerical models of outlet glacier behavior. New exposure dating ( 10 Be) of streamlined bedrock surfaces and glacial erratic boulders of Sermilik Fjord, southeast Greenland, the present-day drainage route of Helheim Glacier, documents rapid retreat (~80 m a -1 ) of this major marine-terminating outlet glacier at the close of the last glaciation. The glacier front retreated ~80 km to within 20 km of the present-day (2010) position of Helheim Glacier in <1 ka, ca. 10.8 ± 0.3 ka ago. Retreat followed rapidly rising air temperatures at the start of the Holocene, and at this temporal resolution there is no evidence that fjord geometry influenced glacier behavior. The significant response to climatic amelioration at the end of the last glacial suggests a high sensitivity to abrupt temperature increases, which has major implications for the future stability of present-day Greenlandic outlet glaciers in a warming climate. Article in Journal/Newspaper glacier Greenland greenlandic Ice Sheet Sermilik The University of Manchester: Research Explorer Greenland Geology 40 5 427 430 |
institution |
Open Polar |
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The University of Manchester: Research Explorer |
op_collection_id |
ftumanchesterpub |
language |
English |
description |
Recent changes in speed, thinning, and retreat rates of marine-terminating outlet glaciers have raised concerns about the future stability of the Greenland Ice Sheet. Establishing a longer term record of outlet glacier retreat rates is essential to provide a context for present-day observations and to improve and constrain numerical models of outlet glacier behavior. New exposure dating ( 10 Be) of streamlined bedrock surfaces and glacial erratic boulders of Sermilik Fjord, southeast Greenland, the present-day drainage route of Helheim Glacier, documents rapid retreat (~80 m a -1 ) of this major marine-terminating outlet glacier at the close of the last glaciation. The glacier front retreated ~80 km to within 20 km of the present-day (2010) position of Helheim Glacier in <1 ka, ca. 10.8 ± 0.3 ka ago. Retreat followed rapidly rising air temperatures at the start of the Holocene, and at this temporal resolution there is no evidence that fjord geometry influenced glacier behavior. The significant response to climatic amelioration at the end of the last glacial suggests a high sensitivity to abrupt temperature increases, which has major implications for the future stability of present-day Greenlandic outlet glaciers in a warming climate. |
format |
Article in Journal/Newspaper |
author |
Hughes, Anna L.C. Rainsley, Eleanor Murray, Tavi Fogwill, Christopher J. Schnabel, Christoph Xu, Sheng |
spellingShingle |
Hughes, Anna L.C. Rainsley, Eleanor Murray, Tavi Fogwill, Christopher J. Schnabel, Christoph Xu, Sheng Rapid response of Helheim Glacier, southeast Greenland, to early Holocene climate warming |
author_facet |
Hughes, Anna L.C. Rainsley, Eleanor Murray, Tavi Fogwill, Christopher J. Schnabel, Christoph Xu, Sheng |
author_sort |
Hughes, Anna L.C. |
title |
Rapid response of Helheim Glacier, southeast Greenland, to early Holocene climate warming |
title_short |
Rapid response of Helheim Glacier, southeast Greenland, to early Holocene climate warming |
title_full |
Rapid response of Helheim Glacier, southeast Greenland, to early Holocene climate warming |
title_fullStr |
Rapid response of Helheim Glacier, southeast Greenland, to early Holocene climate warming |
title_full_unstemmed |
Rapid response of Helheim Glacier, southeast Greenland, to early Holocene climate warming |
title_sort |
rapid response of helheim glacier, southeast greenland, to early holocene climate warming |
publishDate |
2012 |
url |
https://research.manchester.ac.uk/en/publications/011f6227-3b6b-4351-8e01-4f655e3aeba9 https://doi.org/10.1130/G32730.1 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland greenlandic Ice Sheet Sermilik |
genre_facet |
glacier Greenland greenlandic Ice Sheet Sermilik |
op_source |
Hughes , A L C , Rainsley , E , Murray , T , Fogwill , C J , Schnabel , C & Xu , S 2012 , ' Rapid response of Helheim Glacier, southeast Greenland, to early Holocene climate warming ' , Geology , vol. 40 , no. 5 , pp. 427-430 . https://doi.org/10.1130/G32730.1 |
op_relation |
https://research.manchester.ac.uk/en/publications/011f6227-3b6b-4351-8e01-4f655e3aeba9 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1130/G32730.1 |
container_title |
Geology |
container_volume |
40 |
container_issue |
5 |
container_start_page |
427 |
op_container_end_page |
430 |
_version_ |
1802644469617524736 |