Holocene reconfiguration and readvance of the East Antarctic Ice Sheet

How ice sheets respond to changes in their grounding line is important in understanding ice sheet vulnerability to climate and ocean changes. The interplay between regional grounding line change and potentially diverse ice flow behaviour of contributing catchments is relevant to an ice sheet’s stabi...

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Published in:Nature Communications
Main Authors: Greenwood, Sarah L., Simkins, Lauren M., Halberstadt, Anna Ruth W., Prothro, Lindsay O., Anderson, John B.
Format: Text
Language:English
Published: Nature Publishing Group UK 2018
Subjects:
Article
Antarctic
East Antarctic Ice Sheet
Ross Sea
Victoria Land
Antarc*
Ice Sheet
Online Access:http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6085394/
http://www.ncbi.nlm.nih.gov/pubmed/30093609
https://doi.org/10.1038/s41467-018-05625-3
id ftpubmed:oai:pubmedcentral.nih.gov:6085394
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spelling ftpubmed:oai:pubmedcentral.nih.gov:6085394 2023-05-15T13:55:22+02:00 Holocene reconfiguration and readvance of the East Antarctic Ice Sheet Greenwood, Sarah L. Simkins, Lauren M. Halberstadt, Anna Ruth W. Prothro, Lindsay O. Anderson, John B. 2018-08-09 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6085394/ http://www.ncbi.nlm.nih.gov/pubmed/30093609 https://doi.org/10.1038/s41467-018-05625-3 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6085394/ http://www.ncbi.nlm.nih.gov/pubmed/30093609 http://dx.doi.org/10.1038/s41467-018-05625-3 © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2018 ftpubmed https://doi.org/10.1038/s41467-018-05625-3 2018-08-19T00:19:45Z How ice sheets respond to changes in their grounding line is important in understanding ice sheet vulnerability to climate and ocean changes. The interplay between regional grounding line change and potentially diverse ice flow behaviour of contributing catchments is relevant to an ice sheet’s stability and resilience to change. At the last glacial maximum, marine-based ice streams in the western Ross Sea were fed by numerous catchments draining the East Antarctic Ice Sheet. Here we present geomorphological and acoustic stratigraphic evidence of ice sheet reorganisation in the South Victoria Land (SVL) sector of the western Ross Sea. The opening of a grounding line embayment unzipped ice sheet sub-sectors, enabled an ice flow direction change and triggered enhanced flow from SVL outlet glaciers. These relatively small catchments behaved independently of regional grounding line retreat, instead driving an ice sheet readvance that delivered a significant volume of ice to the ocean and was sustained for centuries. Text Antarc* Antarctic Ice Sheet Ross Sea Victoria Land PubMed Central (PMC) Antarctic East Antarctic Ice Sheet Ross Sea Victoria Land Nature Communications 9 1
institution Open Polar
collection PubMed Central (PMC)
op_collection_id ftpubmed
language English
topic Article
spellingShingle Article
Greenwood, Sarah L.
Simkins, Lauren M.
Halberstadt, Anna Ruth W.
Prothro, Lindsay O.
Anderson, John B.
Holocene reconfiguration and readvance of the East Antarctic Ice Sheet
topic_facet Article
description How ice sheets respond to changes in their grounding line is important in understanding ice sheet vulnerability to climate and ocean changes. The interplay between regional grounding line change and potentially diverse ice flow behaviour of contributing catchments is relevant to an ice sheet’s stability and resilience to change. At the last glacial maximum, marine-based ice streams in the western Ross Sea were fed by numerous catchments draining the East Antarctic Ice Sheet. Here we present geomorphological and acoustic stratigraphic evidence of ice sheet reorganisation in the South Victoria Land (SVL) sector of the western Ross Sea. The opening of a grounding line embayment unzipped ice sheet sub-sectors, enabled an ice flow direction change and triggered enhanced flow from SVL outlet glaciers. These relatively small catchments behaved independently of regional grounding line retreat, instead driving an ice sheet readvance that delivered a significant volume of ice to the ocean and was sustained for centuries.
format Text
author Greenwood, Sarah L.
Simkins, Lauren M.
Halberstadt, Anna Ruth W.
Prothro, Lindsay O.
Anderson, John B.
author_facet Greenwood, Sarah L.
Simkins, Lauren M.
Halberstadt, Anna Ruth W.
Prothro, Lindsay O.
Anderson, John B.
author_sort Greenwood, Sarah L.
title Holocene reconfiguration and readvance of the East Antarctic Ice Sheet
title_short Holocene reconfiguration and readvance of the East Antarctic Ice Sheet
title_full Holocene reconfiguration and readvance of the East Antarctic Ice Sheet
title_fullStr Holocene reconfiguration and readvance of the East Antarctic Ice Sheet
title_full_unstemmed Holocene reconfiguration and readvance of the East Antarctic Ice Sheet
title_sort holocene reconfiguration and readvance of the east antarctic ice sheet
publisher Nature Publishing Group UK
publishDate 2018
url http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6085394/
http://www.ncbi.nlm.nih.gov/pubmed/30093609
https://doi.org/10.1038/s41467-018-05625-3
geographic Antarctic
East Antarctic Ice Sheet
Ross Sea
Victoria Land
geographic_facet Antarctic
East Antarctic Ice Sheet
Ross Sea
Victoria Land
genre Antarc*
Antarctic
Ice Sheet
Ross Sea
Victoria Land
genre_facet Antarc*
Antarctic
Ice Sheet
Ross Sea
Victoria Land
op_relation http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6085394/
http://www.ncbi.nlm.nih.gov/pubmed/30093609
http://dx.doi.org/10.1038/s41467-018-05625-3
op_rights © The Author(s) 2018
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
op_rightsnorm CC-BY
op_doi https://doi.org/10.1038/s41467-018-05625-3
container_title Nature Communications
container_volume 9
container_issue 1
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