Widespread persistent thickening of the East Antarctic Ice Sheet by freezing from the base
An International Polar Year aerogeophysical investigation of the high interior of East Antarctica reveals widespread freeze-on that drives substantial mass redistribution at the bottom of the ice sheet. Although the surface accumulation of snow remains the primary mechanism for ice sheet growth, ben...
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American Association for the Advancement of Science
2011
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Online Access: | http://nora.nerc.ac.uk/id/eprint/14034/ http://www.sciencemag.org/content/331/6024/1592.full |
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ftnerc:oai:nora.nerc.ac.uk:14034 2023-05-15T13:45:11+02:00 Widespread persistent thickening of the East Antarctic Ice Sheet by freezing from the base Bell, Robin E. Ferraccioli, Fausto Creyts, Timothy T. Braaten, David Corr, Hugh Das, Indrani Damaske, Detlef Frearson, Nicholas Jordan, Thomas Rose, Kathryn Studinger, Michael Wolovick, Michael 2011 http://nora.nerc.ac.uk/id/eprint/14034/ http://www.sciencemag.org/content/331/6024/1592.full unknown American Association for the Advancement of Science Bell, Robin E.; Ferraccioli, Fausto orcid:0000-0002-9347-4736 Creyts, Timothy T.; Braaten, David; Corr, Hugh; Das, Indrani; Damaske, Detlef; Frearson, Nicholas; Jordan, Thomas orcid:0000-0003-2780-1986 Rose, Kathryn; Studinger, Michael; Wolovick, Michael. 2011 Widespread persistent thickening of the East Antarctic Ice Sheet by freezing from the base. Science, 331 (6024). 1592-1595. https://doi.org/10.1126/science.1200109 <https://doi.org/10.1126/science.1200109> Meteorology and Climatology Glaciology Publication - Article PeerReviewed 2011 ftnerc https://doi.org/10.1126/science.1200109 2023-02-04T19:28:57Z An International Polar Year aerogeophysical investigation of the high interior of East Antarctica reveals widespread freeze-on that drives substantial mass redistribution at the bottom of the ice sheet. Although the surface accumulation of snow remains the primary mechanism for ice sheet growth, beneath Dome A, 24% of the base by area is frozen-on ice. In some places, up to half of the ice thickness has been added from below. These ice packages result from the conductive cooling of water ponded near the Gamburtsev Subglacial Mountain ridges and the supercooling of water forced up steep valley walls. Persistent freeze-on thickens the ice column, alters basal ice rheology and fabric, and upwarps the overlying ice sheet, including the oldest atmospheric climate archive, and drives flow behavior not captured in present models. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet International Polar Year Natural Environment Research Council: NERC Open Research Archive Antarctic East Antarctica East Antarctic Ice Sheet Science 331 6024 1592 1595 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Meteorology and Climatology Glaciology |
spellingShingle |
Meteorology and Climatology Glaciology Bell, Robin E. Ferraccioli, Fausto Creyts, Timothy T. Braaten, David Corr, Hugh Das, Indrani Damaske, Detlef Frearson, Nicholas Jordan, Thomas Rose, Kathryn Studinger, Michael Wolovick, Michael Widespread persistent thickening of the East Antarctic Ice Sheet by freezing from the base |
topic_facet |
Meteorology and Climatology Glaciology |
description |
An International Polar Year aerogeophysical investigation of the high interior of East Antarctica reveals widespread freeze-on that drives substantial mass redistribution at the bottom of the ice sheet. Although the surface accumulation of snow remains the primary mechanism for ice sheet growth, beneath Dome A, 24% of the base by area is frozen-on ice. In some places, up to half of the ice thickness has been added from below. These ice packages result from the conductive cooling of water ponded near the Gamburtsev Subglacial Mountain ridges and the supercooling of water forced up steep valley walls. Persistent freeze-on thickens the ice column, alters basal ice rheology and fabric, and upwarps the overlying ice sheet, including the oldest atmospheric climate archive, and drives flow behavior not captured in present models. |
format |
Article in Journal/Newspaper |
author |
Bell, Robin E. Ferraccioli, Fausto Creyts, Timothy T. Braaten, David Corr, Hugh Das, Indrani Damaske, Detlef Frearson, Nicholas Jordan, Thomas Rose, Kathryn Studinger, Michael Wolovick, Michael |
author_facet |
Bell, Robin E. Ferraccioli, Fausto Creyts, Timothy T. Braaten, David Corr, Hugh Das, Indrani Damaske, Detlef Frearson, Nicholas Jordan, Thomas Rose, Kathryn Studinger, Michael Wolovick, Michael |
author_sort |
Bell, Robin E. |
title |
Widespread persistent thickening of the East Antarctic Ice Sheet by freezing from the base |
title_short |
Widespread persistent thickening of the East Antarctic Ice Sheet by freezing from the base |
title_full |
Widespread persistent thickening of the East Antarctic Ice Sheet by freezing from the base |
title_fullStr |
Widespread persistent thickening of the East Antarctic Ice Sheet by freezing from the base |
title_full_unstemmed |
Widespread persistent thickening of the East Antarctic Ice Sheet by freezing from the base |
title_sort |
widespread persistent thickening of the east antarctic ice sheet by freezing from the base |
publisher |
American Association for the Advancement of Science |
publishDate |
2011 |
url |
http://nora.nerc.ac.uk/id/eprint/14034/ http://www.sciencemag.org/content/331/6024/1592.full |
geographic |
Antarctic East Antarctica East Antarctic Ice Sheet |
geographic_facet |
Antarctic East Antarctica East Antarctic Ice Sheet |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet International Polar Year |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet International Polar Year |
op_relation |
Bell, Robin E.; Ferraccioli, Fausto orcid:0000-0002-9347-4736 Creyts, Timothy T.; Braaten, David; Corr, Hugh; Das, Indrani; Damaske, Detlef; Frearson, Nicholas; Jordan, Thomas orcid:0000-0003-2780-1986 Rose, Kathryn; Studinger, Michael; Wolovick, Michael. 2011 Widespread persistent thickening of the East Antarctic Ice Sheet by freezing from the base. Science, 331 (6024). 1592-1595. https://doi.org/10.1126/science.1200109 <https://doi.org/10.1126/science.1200109> |
op_doi |
https://doi.org/10.1126/science.1200109 |
container_title |
Science |
container_volume |
331 |
container_issue |
6024 |
container_start_page |
1592 |
op_container_end_page |
1595 |
_version_ |
1766215638443884544 |