Mid-Holocene pulse of thinning in the Weddell Sea sector of the West Antarctic ice sheet
Establishing the trajectory of thinning of the West Antarctic ice sheet (WAIS) since the last glacial maximum (LGM) is important for addressing questions concerning ice sheet (in)stability and changes in global sea level. Here we present detailed geomorphological and cosmogenic nuclide data from the...
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ftuglasgow:oai:eprints.gla.ac.uk:123303 2023-12-17T10:21:08+01:00 Mid-Holocene pulse of thinning in the Weddell Sea sector of the West Antarctic ice sheet Hein, Andrew S. Marrero, Shasta M. Woodward, John Dunning, Stuart A. Winter, Kate Westoby, Matthew J. Freeman, Stewart P. H. T. Shanks, Richard P. Sugden, David E. 2016-08 text https://eprints.gla.ac.uk/123303/ https://eprints.gla.ac.uk/123303/1/123303.pdf en eng Nature Research https://eprints.gla.ac.uk/123303/1/123303.pdf Hein, A. S., Marrero, S. M., Woodward, J., Dunning, S. A., Winter, K., Westoby, M. J., Freeman, S. P. H. T. <http://eprints.gla.ac.uk/view/author/12692.html> , Shanks, R. P. <http://eprints.gla.ac.uk/view/author/15948.html> and Sugden, D. E. (2016) Mid-Holocene pulse of thinning in the Weddell Sea sector of the West Antarctic ice sheet. Nature Communications <https://eprints.gla.ac.uk/view/journal_volume/Nature_Communications.html>, 7, 12511. (doi:10.1038/ncomms12511 <https://doi.org/10.1038/ncomms12511>) (PMID:27545202) (PMCID:PMC4996935) cc_by_4 Articles PeerReviewed 2016 ftuglasgow https://doi.org/10.1038/ncomms12511 2023-11-23T23:09:01Z Establishing the trajectory of thinning of the West Antarctic ice sheet (WAIS) since the last glacial maximum (LGM) is important for addressing questions concerning ice sheet (in)stability and changes in global sea level. Here we present detailed geomorphological and cosmogenic nuclide data from the southern Ellsworth Mountains in the heart of the Weddell Sea embayment that suggest the ice sheet, nourished by increased snowfall until the early Holocene, was close to its LGM thickness at 10 ka. A pulse of rapid thinning caused the ice elevation to fall ~400 m to the present level at 6.5–3.5 ka, and could have contributed 1.4–2 m to global sea-level rise. These results imply that the Weddell Sea sector of the WAIS contributed little to late-glacial pulses in sea-level rise but was involved in mid-Holocene rises. The stepped decline is argued to reflect marine downdraw triggered by grounding line retreat into Hercules Inlet. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Weddell Sea University of Glasgow: Enlighten - Publications Antarctic Ellsworth Mountains ENVELOPE(-85.000,-85.000,-78.750,-78.750) Hercules ENVELOPE(161.450,161.450,-77.483,-77.483) Hercules Inlet ENVELOPE(-79.000,-79.000,-80.066,-80.066) Weddell Weddell Sea West Antarctic Ice Sheet Nature Communications 7 1 |
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Open Polar |
collection |
University of Glasgow: Enlighten - Publications |
op_collection_id |
ftuglasgow |
language |
English |
description |
Establishing the trajectory of thinning of the West Antarctic ice sheet (WAIS) since the last glacial maximum (LGM) is important for addressing questions concerning ice sheet (in)stability and changes in global sea level. Here we present detailed geomorphological and cosmogenic nuclide data from the southern Ellsworth Mountains in the heart of the Weddell Sea embayment that suggest the ice sheet, nourished by increased snowfall until the early Holocene, was close to its LGM thickness at 10 ka. A pulse of rapid thinning caused the ice elevation to fall ~400 m to the present level at 6.5–3.5 ka, and could have contributed 1.4–2 m to global sea-level rise. These results imply that the Weddell Sea sector of the WAIS contributed little to late-glacial pulses in sea-level rise but was involved in mid-Holocene rises. The stepped decline is argued to reflect marine downdraw triggered by grounding line retreat into Hercules Inlet. |
format |
Article in Journal/Newspaper |
author |
Hein, Andrew S. Marrero, Shasta M. Woodward, John Dunning, Stuart A. Winter, Kate Westoby, Matthew J. Freeman, Stewart P. H. T. Shanks, Richard P. Sugden, David E. |
spellingShingle |
Hein, Andrew S. Marrero, Shasta M. Woodward, John Dunning, Stuart A. Winter, Kate Westoby, Matthew J. Freeman, Stewart P. H. T. Shanks, Richard P. Sugden, David E. Mid-Holocene pulse of thinning in the Weddell Sea sector of the West Antarctic ice sheet |
author_facet |
Hein, Andrew S. Marrero, Shasta M. Woodward, John Dunning, Stuart A. Winter, Kate Westoby, Matthew J. Freeman, Stewart P. H. T. Shanks, Richard P. Sugden, David E. |
author_sort |
Hein, Andrew S. |
title |
Mid-Holocene pulse of thinning in the Weddell Sea sector of the West Antarctic ice sheet |
title_short |
Mid-Holocene pulse of thinning in the Weddell Sea sector of the West Antarctic ice sheet |
title_full |
Mid-Holocene pulse of thinning in the Weddell Sea sector of the West Antarctic ice sheet |
title_fullStr |
Mid-Holocene pulse of thinning in the Weddell Sea sector of the West Antarctic ice sheet |
title_full_unstemmed |
Mid-Holocene pulse of thinning in the Weddell Sea sector of the West Antarctic ice sheet |
title_sort |
mid-holocene pulse of thinning in the weddell sea sector of the west antarctic ice sheet |
publisher |
Nature Research |
publishDate |
2016 |
url |
https://eprints.gla.ac.uk/123303/ https://eprints.gla.ac.uk/123303/1/123303.pdf |
long_lat |
ENVELOPE(-85.000,-85.000,-78.750,-78.750) ENVELOPE(161.450,161.450,-77.483,-77.483) ENVELOPE(-79.000,-79.000,-80.066,-80.066) |
geographic |
Antarctic Ellsworth Mountains Hercules Hercules Inlet Weddell Weddell Sea West Antarctic Ice Sheet |
geographic_facet |
Antarctic Ellsworth Mountains Hercules Hercules Inlet Weddell Weddell Sea West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Ice Sheet Weddell Sea |
genre_facet |
Antarc* Antarctic Ice Sheet Weddell Sea |
op_relation |
https://eprints.gla.ac.uk/123303/1/123303.pdf Hein, A. S., Marrero, S. M., Woodward, J., Dunning, S. A., Winter, K., Westoby, M. J., Freeman, S. P. H. T. <http://eprints.gla.ac.uk/view/author/12692.html> , Shanks, R. P. <http://eprints.gla.ac.uk/view/author/15948.html> and Sugden, D. E. (2016) Mid-Holocene pulse of thinning in the Weddell Sea sector of the West Antarctic ice sheet. Nature Communications <https://eprints.gla.ac.uk/view/journal_volume/Nature_Communications.html>, 7, 12511. (doi:10.1038/ncomms12511 <https://doi.org/10.1038/ncomms12511>) (PMID:27545202) (PMCID:PMC4996935) |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.1038/ncomms12511 |
container_title |
Nature Communications |
container_volume |
7 |
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1 |
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1785530246090457088 |