Southwest Greenland shelf glaciation during MIS 4 more extensive than during the Last Glacial Maximum
Although geological and modelling evidence indicate that the last glacial inception in North America was in NE Canada, little is known about the glacial response of the nearby western Greenland Ice Sheet (GIS) during the glacial advance of marine oxygen isotope stage 4 (MIS4). Our multi-proxy study...
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ftpubmed:oai:pubmedcentral.nih.gov:6821744 2023-05-15T16:00:13+02:00 Southwest Greenland shelf glaciation during MIS 4 more extensive than during the Last Glacial Maximum Seidenkrantz, Marit-Solveig Kuijpers, Antoon Olsen, Jesper Pearce, Christof Lindblom, Sofia Ploug, Johan Przybyło, Piotr Snowball, Ian 2019-10-30 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6821744/ http://www.ncbi.nlm.nih.gov/pubmed/31666580 https://doi.org/10.1038/s41598-019-51983-3 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6821744/ http://www.ncbi.nlm.nih.gov/pubmed/31666580 http://dx.doi.org/10.1038/s41598-019-51983-3 © The Author(s) 2019 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 2019 ftpubmed https://doi.org/10.1038/s41598-019-51983-3 2019-11-10T01:26:28Z Although geological and modelling evidence indicate that the last glacial inception in North America was in NE Canada, little is known about the glacial response of the nearby western Greenland Ice Sheet (GIS) during the glacial advance of marine oxygen isotope stage 4 (MIS4). Our multi-proxy study of a marine sediment core collected about 60 km southwest of the Outer Hellefisk Moraines demonstrates that in the southern Davis Strait region the most extreme Greenland shelf glaciation of the last glacial cycle occurred during MIS 4, with another prominent glacial advance at 37–33 kyr BP. During those periods the GIS likely reached the Outer Hellefisk Moraines in this area. Except for these two periods, our data suggest significant advection of relatively warm Irminger Sea Water by the West Greenland Current since MIS 4. This advection likely limited the extent of the MIS2 glaciation on the SW Greenland shelf. Decreased precipitation over southwestern Greenland predicted by atmospheric models as a downstream effect of a much larger MIS2 Laurentide Ice Sheet may have played an additional role. Text Davis Strait Greenland Ice Sheet PubMed Central (PMC) Canada Greenland Irminger Sea ENVELOPE(-34.041,-34.041,63.054,63.054) Scientific Reports 9 1 |
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Article Seidenkrantz, Marit-Solveig Kuijpers, Antoon Olsen, Jesper Pearce, Christof Lindblom, Sofia Ploug, Johan Przybyło, Piotr Snowball, Ian Southwest Greenland shelf glaciation during MIS 4 more extensive than during the Last Glacial Maximum |
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Article |
description |
Although geological and modelling evidence indicate that the last glacial inception in North America was in NE Canada, little is known about the glacial response of the nearby western Greenland Ice Sheet (GIS) during the glacial advance of marine oxygen isotope stage 4 (MIS4). Our multi-proxy study of a marine sediment core collected about 60 km southwest of the Outer Hellefisk Moraines demonstrates that in the southern Davis Strait region the most extreme Greenland shelf glaciation of the last glacial cycle occurred during MIS 4, with another prominent glacial advance at 37–33 kyr BP. During those periods the GIS likely reached the Outer Hellefisk Moraines in this area. Except for these two periods, our data suggest significant advection of relatively warm Irminger Sea Water by the West Greenland Current since MIS 4. This advection likely limited the extent of the MIS2 glaciation on the SW Greenland shelf. Decreased precipitation over southwestern Greenland predicted by atmospheric models as a downstream effect of a much larger MIS2 Laurentide Ice Sheet may have played an additional role. |
format |
Text |
author |
Seidenkrantz, Marit-Solveig Kuijpers, Antoon Olsen, Jesper Pearce, Christof Lindblom, Sofia Ploug, Johan Przybyło, Piotr Snowball, Ian |
author_facet |
Seidenkrantz, Marit-Solveig Kuijpers, Antoon Olsen, Jesper Pearce, Christof Lindblom, Sofia Ploug, Johan Przybyło, Piotr Snowball, Ian |
author_sort |
Seidenkrantz, Marit-Solveig |
title |
Southwest Greenland shelf glaciation during MIS 4 more extensive than during the Last Glacial Maximum |
title_short |
Southwest Greenland shelf glaciation during MIS 4 more extensive than during the Last Glacial Maximum |
title_full |
Southwest Greenland shelf glaciation during MIS 4 more extensive than during the Last Glacial Maximum |
title_fullStr |
Southwest Greenland shelf glaciation during MIS 4 more extensive than during the Last Glacial Maximum |
title_full_unstemmed |
Southwest Greenland shelf glaciation during MIS 4 more extensive than during the Last Glacial Maximum |
title_sort |
southwest greenland shelf glaciation during mis 4 more extensive than during the last glacial maximum |
publisher |
Nature Publishing Group UK |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6821744/ http://www.ncbi.nlm.nih.gov/pubmed/31666580 https://doi.org/10.1038/s41598-019-51983-3 |
long_lat |
ENVELOPE(-34.041,-34.041,63.054,63.054) |
geographic |
Canada Greenland Irminger Sea |
geographic_facet |
Canada Greenland Irminger Sea |
genre |
Davis Strait Greenland Ice Sheet |
genre_facet |
Davis Strait Greenland Ice Sheet |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6821744/ http://www.ncbi.nlm.nih.gov/pubmed/31666580 http://dx.doi.org/10.1038/s41598-019-51983-3 |
op_rights |
© The Author(s) 2019 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/s41598-019-51983-3 |
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Scientific Reports |
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