Surface Melt-Induced Acceleration of Greenland Ice-Sheet Flow
Ice flow at a location in the equilibrium zone of the west-central Greenland Ice Sheet accelerates above the midwinter average rate during periods of summer melting. The near coincidence of the ice acceleration with the duration of surface melting, followed by deceleration after the melting ceases,...
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American Association for the Advancement of Science (AAAS)
2002
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Online Access: | http://dx.doi.org/10.1126/science.1072708 https://www.science.org/doi/pdf/10.1126/science.1072708 |
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craaas:10.1126/science.1072708 2024-06-23T07:53:14+00:00 Surface Melt-Induced Acceleration of Greenland Ice-Sheet Flow Zwally, H. Jay Abdalati, Waleed Herring, Tom Larson, Kristine Saba, Jack Steffen, Konrad 2002 http://dx.doi.org/10.1126/science.1072708 https://www.science.org/doi/pdf/10.1126/science.1072708 en eng American Association for the Advancement of Science (AAAS) Science volume 297, issue 5579, page 218-222 ISSN 0036-8075 1095-9203 journal-article 2002 craaas https://doi.org/10.1126/science.1072708 2024-06-13T04:01:39Z Ice flow at a location in the equilibrium zone of the west-central Greenland Ice Sheet accelerates above the midwinter average rate during periods of summer melting. The near coincidence of the ice acceleration with the duration of surface melting, followed by deceleration after the melting ceases, indicates that glacial sliding is enhanced by rapid migration of surface meltwater to the ice-bedrock interface. Interannual variations in the ice acceleration are correlated with variations in the intensity of the surface melting, with larger increases accompanying higher amounts of summer melting. The indicated coupling between surface melting and ice-sheet flow provides a mechanism for rapid, large-scale, dynamic responses of ice sheets to climate warming. Article in Journal/Newspaper Greenland Ice Sheet AAAS Resource Center (American Association for the Advancement of Science) Greenland Midwinter ENVELOPE(139.931,139.931,-66.690,-66.690) Science 297 5579 218 222 |
institution |
Open Polar |
collection |
AAAS Resource Center (American Association for the Advancement of Science) |
op_collection_id |
craaas |
language |
English |
description |
Ice flow at a location in the equilibrium zone of the west-central Greenland Ice Sheet accelerates above the midwinter average rate during periods of summer melting. The near coincidence of the ice acceleration with the duration of surface melting, followed by deceleration after the melting ceases, indicates that glacial sliding is enhanced by rapid migration of surface meltwater to the ice-bedrock interface. Interannual variations in the ice acceleration are correlated with variations in the intensity of the surface melting, with larger increases accompanying higher amounts of summer melting. The indicated coupling between surface melting and ice-sheet flow provides a mechanism for rapid, large-scale, dynamic responses of ice sheets to climate warming. |
format |
Article in Journal/Newspaper |
author |
Zwally, H. Jay Abdalati, Waleed Herring, Tom Larson, Kristine Saba, Jack Steffen, Konrad |
spellingShingle |
Zwally, H. Jay Abdalati, Waleed Herring, Tom Larson, Kristine Saba, Jack Steffen, Konrad Surface Melt-Induced Acceleration of Greenland Ice-Sheet Flow |
author_facet |
Zwally, H. Jay Abdalati, Waleed Herring, Tom Larson, Kristine Saba, Jack Steffen, Konrad |
author_sort |
Zwally, H. Jay |
title |
Surface Melt-Induced Acceleration of Greenland Ice-Sheet Flow |
title_short |
Surface Melt-Induced Acceleration of Greenland Ice-Sheet Flow |
title_full |
Surface Melt-Induced Acceleration of Greenland Ice-Sheet Flow |
title_fullStr |
Surface Melt-Induced Acceleration of Greenland Ice-Sheet Flow |
title_full_unstemmed |
Surface Melt-Induced Acceleration of Greenland Ice-Sheet Flow |
title_sort |
surface melt-induced acceleration of greenland ice-sheet flow |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2002 |
url |
http://dx.doi.org/10.1126/science.1072708 https://www.science.org/doi/pdf/10.1126/science.1072708 |
long_lat |
ENVELOPE(139.931,139.931,-66.690,-66.690) |
geographic |
Greenland Midwinter |
geographic_facet |
Greenland Midwinter |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
Science volume 297, issue 5579, page 218-222 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.1072708 |
container_title |
Science |
container_volume |
297 |
container_issue |
5579 |
container_start_page |
218 |
op_container_end_page |
222 |
_version_ |
1802644803290136576 |