Maximum extent and decay of the Laurentide Ice Sheet in Western Baffin Bay during the Last glacial episode
Reconstructing the extent, flow and decay of the Laurentide Ice Sheet (LIS) on the continental shelves of North America during the last glaciation provides paleoglaciological analogues that are essential for understanding and predicting how modern marine-based ice-sheets will respond to future clima...
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ftpubmed:oai:pubmedcentral.nih.gov:5587637 2023-05-15T15:06:44+02:00 Maximum extent and decay of the Laurentide Ice Sheet in Western Baffin Bay during the Last glacial episode Brouard, Etienne Lajeunesse, Patrick 2017-09-06 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5587637/ http://www.ncbi.nlm.nih.gov/pubmed/28878304 https://doi.org/10.1038/s41598-017-11010-9 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5587637/ http://www.ncbi.nlm.nih.gov/pubmed/28878304 http://dx.doi.org/10.1038/s41598-017-11010-9 © The Author(s) 2017 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 2017 ftpubmed https://doi.org/10.1038/s41598-017-11010-9 2017-09-17T01:20:13Z Reconstructing the extent, flow and decay of the Laurentide Ice Sheet (LIS) on the continental shelves of North America during the last glaciation provides paleoglaciological analogues that are essential for understanding and predicting how modern marine-based ice-sheets will respond to future climate change and sea level fluctuations. The geometry of the LIS during Marine isotope stage 2 (MIS-2; 29–14 ka BP) is one key element for ice-sheet modelling. The maximum extent of the LIS during this stage is well constrained for most sectors of the ice sheet, but major uncertainties remain, especially along the continental shelves of Arctic Canada. Despite a series of recent papers, the extent of the LIS in Western Baffin Bay, an area draining large volumes of glacial ice through multiple ice streams and likely characterized by ice shelves, remains highly speculative. Here we present unequivocal marine geophysical evidence that during the MIS-2 the LIS extended to the edge of the continental shelf, seaward of the previously proposed limits and subsequently retreated episodically westward during deglaciation. These data support interpretations of deep glacial ice grounding in Western Baffin Bay. Text Arctic Baffin Bay Baffin Bay Baffin Climate change Ice Sheet Ice Shelves PubMed Central (PMC) Arctic Baffin Bay Canada Scientific Reports 7 1 |
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Article Brouard, Etienne Lajeunesse, Patrick Maximum extent and decay of the Laurentide Ice Sheet in Western Baffin Bay during the Last glacial episode |
topic_facet |
Article |
description |
Reconstructing the extent, flow and decay of the Laurentide Ice Sheet (LIS) on the continental shelves of North America during the last glaciation provides paleoglaciological analogues that are essential for understanding and predicting how modern marine-based ice-sheets will respond to future climate change and sea level fluctuations. The geometry of the LIS during Marine isotope stage 2 (MIS-2; 29–14 ka BP) is one key element for ice-sheet modelling. The maximum extent of the LIS during this stage is well constrained for most sectors of the ice sheet, but major uncertainties remain, especially along the continental shelves of Arctic Canada. Despite a series of recent papers, the extent of the LIS in Western Baffin Bay, an area draining large volumes of glacial ice through multiple ice streams and likely characterized by ice shelves, remains highly speculative. Here we present unequivocal marine geophysical evidence that during the MIS-2 the LIS extended to the edge of the continental shelf, seaward of the previously proposed limits and subsequently retreated episodically westward during deglaciation. These data support interpretations of deep glacial ice grounding in Western Baffin Bay. |
format |
Text |
author |
Brouard, Etienne Lajeunesse, Patrick |
author_facet |
Brouard, Etienne Lajeunesse, Patrick |
author_sort |
Brouard, Etienne |
title |
Maximum extent and decay of the Laurentide Ice Sheet in Western Baffin Bay during the Last glacial episode |
title_short |
Maximum extent and decay of the Laurentide Ice Sheet in Western Baffin Bay during the Last glacial episode |
title_full |
Maximum extent and decay of the Laurentide Ice Sheet in Western Baffin Bay during the Last glacial episode |
title_fullStr |
Maximum extent and decay of the Laurentide Ice Sheet in Western Baffin Bay during the Last glacial episode |
title_full_unstemmed |
Maximum extent and decay of the Laurentide Ice Sheet in Western Baffin Bay during the Last glacial episode |
title_sort |
maximum extent and decay of the laurentide ice sheet in western baffin bay during the last glacial episode |
publisher |
Nature Publishing Group UK |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5587637/ http://www.ncbi.nlm.nih.gov/pubmed/28878304 https://doi.org/10.1038/s41598-017-11010-9 |
geographic |
Arctic Baffin Bay Canada |
geographic_facet |
Arctic Baffin Bay Canada |
genre |
Arctic Baffin Bay Baffin Bay Baffin Climate change Ice Sheet Ice Shelves |
genre_facet |
Arctic Baffin Bay Baffin Bay Baffin Climate change Ice Sheet Ice Shelves |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5587637/ http://www.ncbi.nlm.nih.gov/pubmed/28878304 http://dx.doi.org/10.1038/s41598-017-11010-9 |
op_rights |
© The Author(s) 2017 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/s41598-017-11010-9 |
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Scientific Reports |
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