Glacier fluctuations in the northern Patagonian Andes (44°S) imply wind-modulated interhemispheric in-phase climate shifts during Termination 1
The Last Glacial Termination (T1) featured major changes in global circulation systems that led to a shift from glacial to interglacial climate. While polar ice cores attest to an antiphased thermal pattern at millennial timescales, recent well-dated moraine records from both hemispheres suggest in-...
Published in: | Scientific Reports |
---|---|
Main Authors: | , , , , , , , |
Format: | Text |
Language: | English |
Published: |
Nature Publishing Group UK
2022
|
Subjects: | |
Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9237032/ http://www.ncbi.nlm.nih.gov/pubmed/35761034 https://doi.org/10.1038/s41598-022-14921-4 |
id |
ftpubmed:oai:pubmedcentral.nih.gov:9237032 |
---|---|
record_format |
openpolar |
spelling |
ftpubmed:oai:pubmedcentral.nih.gov:9237032 2023-05-15T14:01:08+02:00 Glacier fluctuations in the northern Patagonian Andes (44°S) imply wind-modulated interhemispheric in-phase climate shifts during Termination 1 Soteres, Rodrigo L. Sagredo, Esteban A. Kaplan, Michael R. Martini, Mateo A. Moreno, Patricio I. Reynhout, Scott A. Schwartz, Roseanne Schaefer, Joerg M. 2022-06-27 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9237032/ http://www.ncbi.nlm.nih.gov/pubmed/35761034 https://doi.org/10.1038/s41598-022-14921-4 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9237032/ http://www.ncbi.nlm.nih.gov/pubmed/35761034 http://dx.doi.org/10.1038/s41598-022-14921-4 © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . CC-BY Sci Rep Article Text 2022 ftpubmed https://doi.org/10.1038/s41598-022-14921-4 2022-07-03T00:53:54Z The Last Glacial Termination (T1) featured major changes in global circulation systems that led to a shift from glacial to interglacial climate. While polar ice cores attest to an antiphased thermal pattern at millennial timescales, recent well-dated moraine records from both hemispheres suggest in-phase fluctuations in glaciers through T1, which is inconsistent with the bipolar see-saw paradigm. Here, we present a glacier chronology based on 30 new (10)Be surface exposure ages from well-preserved moraines in the Lago Palena/General Vintter basin in northern Patagonia (~ 44°S). We find that the main glacier lobe underwent profound retreat after 19.7 ± 0.7 ka. This recessional trend led to the individualization of the Cerro Riñón glacier by ~ 16.3 ka, which underwent minor readvances at 15.9 ± 0.5 ka during Heinrich Stadial 1, during the Antarctic Cold Reversal with successive maxima at 13.5 ± 0.4, 13.1 ± 0.4, and 13.1 ± 0.5 ka, and a minor culmination at 12.5 ± 0.4 ka during Younger Dryas time. We conclude that fluctuations of Patagonian glaciers during T1 were controlled primarily by climate anomalies brought by shifts in the Southern Westerly Winds (SWW) locus. We posit that the global covariation of mountain glaciers during T1 was linked to variations in atmospheric CO(2) (atmCO(2)) promoted by the interplay of the SWW-Southern Ocean system at millennial timescales. Text Antarc* Antarctic Southern Ocean PubMed Central (PMC) Antarctic Patagonia Southern Ocean The Antarctic Scientific Reports 12 1 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Article |
spellingShingle |
Article Soteres, Rodrigo L. Sagredo, Esteban A. Kaplan, Michael R. Martini, Mateo A. Moreno, Patricio I. Reynhout, Scott A. Schwartz, Roseanne Schaefer, Joerg M. Glacier fluctuations in the northern Patagonian Andes (44°S) imply wind-modulated interhemispheric in-phase climate shifts during Termination 1 |
topic_facet |
Article |
description |
The Last Glacial Termination (T1) featured major changes in global circulation systems that led to a shift from glacial to interglacial climate. While polar ice cores attest to an antiphased thermal pattern at millennial timescales, recent well-dated moraine records from both hemispheres suggest in-phase fluctuations in glaciers through T1, which is inconsistent with the bipolar see-saw paradigm. Here, we present a glacier chronology based on 30 new (10)Be surface exposure ages from well-preserved moraines in the Lago Palena/General Vintter basin in northern Patagonia (~ 44°S). We find that the main glacier lobe underwent profound retreat after 19.7 ± 0.7 ka. This recessional trend led to the individualization of the Cerro Riñón glacier by ~ 16.3 ka, which underwent minor readvances at 15.9 ± 0.5 ka during Heinrich Stadial 1, during the Antarctic Cold Reversal with successive maxima at 13.5 ± 0.4, 13.1 ± 0.4, and 13.1 ± 0.5 ka, and a minor culmination at 12.5 ± 0.4 ka during Younger Dryas time. We conclude that fluctuations of Patagonian glaciers during T1 were controlled primarily by climate anomalies brought by shifts in the Southern Westerly Winds (SWW) locus. We posit that the global covariation of mountain glaciers during T1 was linked to variations in atmospheric CO(2) (atmCO(2)) promoted by the interplay of the SWW-Southern Ocean system at millennial timescales. |
format |
Text |
author |
Soteres, Rodrigo L. Sagredo, Esteban A. Kaplan, Michael R. Martini, Mateo A. Moreno, Patricio I. Reynhout, Scott A. Schwartz, Roseanne Schaefer, Joerg M. |
author_facet |
Soteres, Rodrigo L. Sagredo, Esteban A. Kaplan, Michael R. Martini, Mateo A. Moreno, Patricio I. Reynhout, Scott A. Schwartz, Roseanne Schaefer, Joerg M. |
author_sort |
Soteres, Rodrigo L. |
title |
Glacier fluctuations in the northern Patagonian Andes (44°S) imply wind-modulated interhemispheric in-phase climate shifts during Termination 1 |
title_short |
Glacier fluctuations in the northern Patagonian Andes (44°S) imply wind-modulated interhemispheric in-phase climate shifts during Termination 1 |
title_full |
Glacier fluctuations in the northern Patagonian Andes (44°S) imply wind-modulated interhemispheric in-phase climate shifts during Termination 1 |
title_fullStr |
Glacier fluctuations in the northern Patagonian Andes (44°S) imply wind-modulated interhemispheric in-phase climate shifts during Termination 1 |
title_full_unstemmed |
Glacier fluctuations in the northern Patagonian Andes (44°S) imply wind-modulated interhemispheric in-phase climate shifts during Termination 1 |
title_sort |
glacier fluctuations in the northern patagonian andes (44°s) imply wind-modulated interhemispheric in-phase climate shifts during termination 1 |
publisher |
Nature Publishing Group UK |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9237032/ http://www.ncbi.nlm.nih.gov/pubmed/35761034 https://doi.org/10.1038/s41598-022-14921-4 |
geographic |
Antarctic Patagonia Southern Ocean The Antarctic |
geographic_facet |
Antarctic Patagonia Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
Sci Rep |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9237032/ http://www.ncbi.nlm.nih.gov/pubmed/35761034 http://dx.doi.org/10.1038/s41598-022-14921-4 |
op_rights |
© The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-022-14921-4 |
container_title |
Scientific Reports |
container_volume |
12 |
container_issue |
1 |
_version_ |
1766270727100563456 |