West Antarctic Ice Sheet retreat driven by Holocene warm water incursions. ...
Glaciological and oceanographic observations coupled with numerical models show that warm Circumpolar Deep Water (CDW) incursions onto the West Antarctic continental shelf cause melting of the undersides of floating ice shelves. Because these ice shelves buttress glaciers feeding into them, their oc...
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2017
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Online Access: | https://dx.doi.org/10.17863/cam.11512 https://www.repository.cam.ac.uk/handle/1810/266625 |
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ftdatacite:10.17863/cam.11512 2024-02-27T08:32:53+00:00 West Antarctic Ice Sheet retreat driven by Holocene warm water incursions. ... Hillenbrand, Claus-Dieter Smith, James A Hodell, David A Greaves, Mervyn Poole, Christopher R Kender, Sev Williams, Mark Andersen, Thorbjørn Joest Jernas, Patrycja E Elderfield, Henry Klages, Johann P Roberts, Stephen J Gohl, Karsten Larter, Robert D Kuhn, Gerhard 2017 https://dx.doi.org/10.17863/cam.11512 https://www.repository.cam.ac.uk/handle/1810/266625 en eng Springer Science and Business Media LLC Antarctic Regions Foraminifera Freezing Geologic Sediments Global Warming History, 19th Century History, 20th Century History, 21st Century History, Ancient Hot Temperature Ice Cover Models, Theoretical Oceans and Seas Reproducibility of Results Seawater Wind article-journal ScholarlyArticle JournalArticle Article 2017 ftdatacite https://doi.org/10.17863/cam.11512 2024-02-01T14:55:16Z Glaciological and oceanographic observations coupled with numerical models show that warm Circumpolar Deep Water (CDW) incursions onto the West Antarctic continental shelf cause melting of the undersides of floating ice shelves. Because these ice shelves buttress glaciers feeding into them, their ocean-induced thinning is driving Antarctic ice-sheet retreat today. Here we present a multi-proxy data based reconstruction of variability in CDW inflow to the Amundsen Sea sector, the most vulnerable part of the West Antarctic Ice Sheet, during the Holocene epoch (from 11.7 thousand years ago to the present). The chemical compositions of foraminifer shells and benthic foraminifer assemblages in marine sediments indicate that enhanced CDW upwelling, controlled by the latitudinal position of the Southern Hemisphere westerly winds, forced deglaciation of this sector from at least 10,400 years ago until 7,500 years ago-when an ice-shelf collapse may have caused rapid ice-sheet thinning further upstream-and since the ... Article in Journal/Newspaper Amundsen Sea Antarc* Antarctic Ice Sheet Ice Shelf Ice Shelves DataCite Metadata Store (German National Library of Science and Technology) Amundsen Sea Antarctic Buttress ENVELOPE(-57.083,-57.083,-63.550,-63.550) West Antarctic Ice Sheet |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Antarctic Regions Foraminifera Freezing Geologic Sediments Global Warming History, 19th Century History, 20th Century History, 21st Century History, Ancient Hot Temperature Ice Cover Models, Theoretical Oceans and Seas Reproducibility of Results Seawater Wind |
spellingShingle |
Antarctic Regions Foraminifera Freezing Geologic Sediments Global Warming History, 19th Century History, 20th Century History, 21st Century History, Ancient Hot Temperature Ice Cover Models, Theoretical Oceans and Seas Reproducibility of Results Seawater Wind Hillenbrand, Claus-Dieter Smith, James A Hodell, David A Greaves, Mervyn Poole, Christopher R Kender, Sev Williams, Mark Andersen, Thorbjørn Joest Jernas, Patrycja E Elderfield, Henry Klages, Johann P Roberts, Stephen J Gohl, Karsten Larter, Robert D Kuhn, Gerhard West Antarctic Ice Sheet retreat driven by Holocene warm water incursions. ... |
topic_facet |
Antarctic Regions Foraminifera Freezing Geologic Sediments Global Warming History, 19th Century History, 20th Century History, 21st Century History, Ancient Hot Temperature Ice Cover Models, Theoretical Oceans and Seas Reproducibility of Results Seawater Wind |
description |
Glaciological and oceanographic observations coupled with numerical models show that warm Circumpolar Deep Water (CDW) incursions onto the West Antarctic continental shelf cause melting of the undersides of floating ice shelves. Because these ice shelves buttress glaciers feeding into them, their ocean-induced thinning is driving Antarctic ice-sheet retreat today. Here we present a multi-proxy data based reconstruction of variability in CDW inflow to the Amundsen Sea sector, the most vulnerable part of the West Antarctic Ice Sheet, during the Holocene epoch (from 11.7 thousand years ago to the present). The chemical compositions of foraminifer shells and benthic foraminifer assemblages in marine sediments indicate that enhanced CDW upwelling, controlled by the latitudinal position of the Southern Hemisphere westerly winds, forced deglaciation of this sector from at least 10,400 years ago until 7,500 years ago-when an ice-shelf collapse may have caused rapid ice-sheet thinning further upstream-and since the ... |
format |
Article in Journal/Newspaper |
author |
Hillenbrand, Claus-Dieter Smith, James A Hodell, David A Greaves, Mervyn Poole, Christopher R Kender, Sev Williams, Mark Andersen, Thorbjørn Joest Jernas, Patrycja E Elderfield, Henry Klages, Johann P Roberts, Stephen J Gohl, Karsten Larter, Robert D Kuhn, Gerhard |
author_facet |
Hillenbrand, Claus-Dieter Smith, James A Hodell, David A Greaves, Mervyn Poole, Christopher R Kender, Sev Williams, Mark Andersen, Thorbjørn Joest Jernas, Patrycja E Elderfield, Henry Klages, Johann P Roberts, Stephen J Gohl, Karsten Larter, Robert D Kuhn, Gerhard |
author_sort |
Hillenbrand, Claus-Dieter |
title |
West Antarctic Ice Sheet retreat driven by Holocene warm water incursions. ... |
title_short |
West Antarctic Ice Sheet retreat driven by Holocene warm water incursions. ... |
title_full |
West Antarctic Ice Sheet retreat driven by Holocene warm water incursions. ... |
title_fullStr |
West Antarctic Ice Sheet retreat driven by Holocene warm water incursions. ... |
title_full_unstemmed |
West Antarctic Ice Sheet retreat driven by Holocene warm water incursions. ... |
title_sort |
west antarctic ice sheet retreat driven by holocene warm water incursions. ... |
publisher |
Springer Science and Business Media LLC |
publishDate |
2017 |
url |
https://dx.doi.org/10.17863/cam.11512 https://www.repository.cam.ac.uk/handle/1810/266625 |
long_lat |
ENVELOPE(-57.083,-57.083,-63.550,-63.550) |
geographic |
Amundsen Sea Antarctic Buttress West Antarctic Ice Sheet |
geographic_facet |
Amundsen Sea Antarctic Buttress West Antarctic Ice Sheet |
genre |
Amundsen Sea Antarc* Antarctic Ice Sheet Ice Shelf Ice Shelves |
genre_facet |
Amundsen Sea Antarc* Antarctic Ice Sheet Ice Shelf Ice Shelves |
op_doi |
https://doi.org/10.17863/cam.11512 |
_version_ |
1792041978168344576 |