Multiproxy paleoceanographic study from the western Barents Sea reveals dramatic Younger Dryas onset followed by oscillatory warming trend
The Younger Dryas (YD) is recognized as a cool period that began and ended abruptly during a time of general warming at the end of the last glacial. New multi-proxy data from a sediment gravity core from Storfjordrenna (western Barents Sea, 253 m water depth) reveals that the onset of the YD occurre...
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ftpubmed:oai:pubmedcentral.nih.gov:7515869 2023-05-15T15:38:30+02:00 Multiproxy paleoceanographic study from the western Barents Sea reveals dramatic Younger Dryas onset followed by oscillatory warming trend Łącka, Magdalena Michalska, Danuta Pawłowska, Joanna Szymańska, Natalia Szczuciński, Witold Forwick, Matthias Zajączkowski, Marek 2020-09-24 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7515869/ http://www.ncbi.nlm.nih.gov/pubmed/32973239 https://doi.org/10.1038/s41598-020-72747-4 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7515869/ http://www.ncbi.nlm.nih.gov/pubmed/32973239 http://dx.doi.org/10.1038/s41598-020-72747-4 © The Author(s) 2020 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/. CC-BY Sci Rep Article Text 2020 ftpubmed https://doi.org/10.1038/s41598-020-72747-4 2020-10-04T00:48:00Z The Younger Dryas (YD) is recognized as a cool period that began and ended abruptly during a time of general warming at the end of the last glacial. New multi-proxy data from a sediment gravity core from Storfjordrenna (western Barents Sea, 253 m water depth) reveals that the onset of the YD occurred as a single short-lived dramatic environment deterioration, whereas the subsequent warming was oscillatory. The water masses in the western Barents Sea were likely strongly stratified at the onset of the YD, possibly due to runoff of meltwater combined with perennial sea-ice cover, the latter may last up to several decades without any brake-up. Consequently, anoxic conditions prevailed at the bottom of Storfjordrenna, leading to a sharp reduction of benthic biota and the appearance of vivianite microconcretions which formation is favoured by reducing conditions. While the anoxic conditions in Storfjordrenna were transient, the unfavorable conditions for benthic foraminifera lasted for c. 1300 years. We suggest that the Pre-Boreal Oscillation, just after the onset of the Holocene, may have been a continuation of the oscillatory warming trend during the YD. Text Barents Sea Sea ice Storfjordrenna PubMed Central (PMC) Barents Sea Storfjordrenna ENVELOPE(17.000,17.000,76.000,76.000) Scientific Reports 10 1 |
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Article Łącka, Magdalena Michalska, Danuta Pawłowska, Joanna Szymańska, Natalia Szczuciński, Witold Forwick, Matthias Zajączkowski, Marek Multiproxy paleoceanographic study from the western Barents Sea reveals dramatic Younger Dryas onset followed by oscillatory warming trend |
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Article |
description |
The Younger Dryas (YD) is recognized as a cool period that began and ended abruptly during a time of general warming at the end of the last glacial. New multi-proxy data from a sediment gravity core from Storfjordrenna (western Barents Sea, 253 m water depth) reveals that the onset of the YD occurred as a single short-lived dramatic environment deterioration, whereas the subsequent warming was oscillatory. The water masses in the western Barents Sea were likely strongly stratified at the onset of the YD, possibly due to runoff of meltwater combined with perennial sea-ice cover, the latter may last up to several decades without any brake-up. Consequently, anoxic conditions prevailed at the bottom of Storfjordrenna, leading to a sharp reduction of benthic biota and the appearance of vivianite microconcretions which formation is favoured by reducing conditions. While the anoxic conditions in Storfjordrenna were transient, the unfavorable conditions for benthic foraminifera lasted for c. 1300 years. We suggest that the Pre-Boreal Oscillation, just after the onset of the Holocene, may have been a continuation of the oscillatory warming trend during the YD. |
format |
Text |
author |
Łącka, Magdalena Michalska, Danuta Pawłowska, Joanna Szymańska, Natalia Szczuciński, Witold Forwick, Matthias Zajączkowski, Marek |
author_facet |
Łącka, Magdalena Michalska, Danuta Pawłowska, Joanna Szymańska, Natalia Szczuciński, Witold Forwick, Matthias Zajączkowski, Marek |
author_sort |
Łącka, Magdalena |
title |
Multiproxy paleoceanographic study from the western Barents Sea reveals dramatic Younger Dryas onset followed by oscillatory warming trend |
title_short |
Multiproxy paleoceanographic study from the western Barents Sea reveals dramatic Younger Dryas onset followed by oscillatory warming trend |
title_full |
Multiproxy paleoceanographic study from the western Barents Sea reveals dramatic Younger Dryas onset followed by oscillatory warming trend |
title_fullStr |
Multiproxy paleoceanographic study from the western Barents Sea reveals dramatic Younger Dryas onset followed by oscillatory warming trend |
title_full_unstemmed |
Multiproxy paleoceanographic study from the western Barents Sea reveals dramatic Younger Dryas onset followed by oscillatory warming trend |
title_sort |
multiproxy paleoceanographic study from the western barents sea reveals dramatic younger dryas onset followed by oscillatory warming trend |
publisher |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7515869/ http://www.ncbi.nlm.nih.gov/pubmed/32973239 https://doi.org/10.1038/s41598-020-72747-4 |
long_lat |
ENVELOPE(17.000,17.000,76.000,76.000) |
geographic |
Barents Sea Storfjordrenna |
geographic_facet |
Barents Sea Storfjordrenna |
genre |
Barents Sea Sea ice Storfjordrenna |
genre_facet |
Barents Sea Sea ice Storfjordrenna |
op_source |
Sci Rep |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7515869/ http://www.ncbi.nlm.nih.gov/pubmed/32973239 http://dx.doi.org/10.1038/s41598-020-72747-4 |
op_rights |
© The Author(s) 2020 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/. |
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CC-BY |
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https://doi.org/10.1038/s41598-020-72747-4 |
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Scientific Reports |
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10 |
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