Deglacial patterns of South Pacific overturning inferred from 231Pa and 230Th
The millennial‐scale variability of the Atlantic Meridional Overturning Circulation (AMOC) is well documented for the last glacial termination and beyond. Despite its importance for the climate system, the evolution of the South Pacific overturning circulation (SPOC) is by far less well understood....
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ftunivlausanne:oai:serval.unil.ch:BIB_E89266303BD1 2024-02-11T10:08:50+01:00 Deglacial patterns of South Pacific overturning inferred from 231Pa and 230Th Ronge, Thomas A. Lippold, Jörg Geibert, Walter Jaccard, Samuel L. Mieruch-Schnülle, Sebastian Süfke, Finn Tiedemann, Ralf 2021-12 application/pdf https://serval.unil.ch/notice/serval:BIB_E89266303BD1 https://doi.org/10.1038/s41598-021-00111-1 https://serval.unil.ch/resource/serval:BIB_E89266303BD1.P001/REF.pdf http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_E89266303BD12 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-021-00111-1 info:eu-repo/semantics/altIdentifier/pissn/2045-2322 info:eu-repo/grantAgreement/SNF/Careers/PP00P2_172915/// info:eu-repo/semantics/altIdentifier/urn/urn:nbn:ch:serval-BIB_E89266303BD12 https://serval.unil.ch/notice/serval:BIB_E89266303BD1 doi:10.1038/s41598-021-00111-1 https://serval.unil.ch/resource/serval:BIB_E89266303BD1.P001/REF.pdf http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_E89266303BD12 info:eu-repo/semantics/openAccess CC BY 4.0 https://creativecommons.org/licenses/by/4.0/ Scientific Reports, vol. 11, no. 1 Multidisciplinary info:eu-repo/semantics/article article info:eu-repo/semantics/publishedVersion 2021 ftunivlausanne https://doi.org/10.1038/s41598-021-00111-1 2024-01-22T00:56:11Z The millennial‐scale variability of the Atlantic Meridional Overturning Circulation (AMOC) is well documented for the last glacial termination and beyond. Despite its importance for the climate system, the evolution of the South Pacific overturning circulation (SPOC) is by far less well understood. A recently published study highlights the potential applicability of the 231Pa/230Th‐proxy in the Pacific. Here, we present five sedimentary down‐core profiles of 231Pa/230Th‐ratios measured on a depth transect from the Pacific sector of the Southern Ocean to test this hypothesis using downcore records. Our data are consistent with an increase in SPOC as early as 20 ka that peaked during Heinrich Stadial 1. The timing indicates that the SPOC did not simply react to AMOC changes via the bipolar seesaw but were triggered via Southern Hemisphere processes. Article in Journal/Newspaper Southern Ocean Université de Lausanne (UNIL): Serval - Serveur académique lausannois Pacific Southern Ocean Scientific Reports 11 1 |
institution |
Open Polar |
collection |
Université de Lausanne (UNIL): Serval - Serveur académique lausannois |
op_collection_id |
ftunivlausanne |
language |
English |
topic |
Multidisciplinary |
spellingShingle |
Multidisciplinary Ronge, Thomas A. Lippold, Jörg Geibert, Walter Jaccard, Samuel L. Mieruch-Schnülle, Sebastian Süfke, Finn Tiedemann, Ralf Deglacial patterns of South Pacific overturning inferred from 231Pa and 230Th |
topic_facet |
Multidisciplinary |
description |
The millennial‐scale variability of the Atlantic Meridional Overturning Circulation (AMOC) is well documented for the last glacial termination and beyond. Despite its importance for the climate system, the evolution of the South Pacific overturning circulation (SPOC) is by far less well understood. A recently published study highlights the potential applicability of the 231Pa/230Th‐proxy in the Pacific. Here, we present five sedimentary down‐core profiles of 231Pa/230Th‐ratios measured on a depth transect from the Pacific sector of the Southern Ocean to test this hypothesis using downcore records. Our data are consistent with an increase in SPOC as early as 20 ka that peaked during Heinrich Stadial 1. The timing indicates that the SPOC did not simply react to AMOC changes via the bipolar seesaw but were triggered via Southern Hemisphere processes. |
format |
Article in Journal/Newspaper |
author |
Ronge, Thomas A. Lippold, Jörg Geibert, Walter Jaccard, Samuel L. Mieruch-Schnülle, Sebastian Süfke, Finn Tiedemann, Ralf |
author_facet |
Ronge, Thomas A. Lippold, Jörg Geibert, Walter Jaccard, Samuel L. Mieruch-Schnülle, Sebastian Süfke, Finn Tiedemann, Ralf |
author_sort |
Ronge, Thomas A. |
title |
Deglacial patterns of South Pacific overturning inferred from 231Pa and 230Th |
title_short |
Deglacial patterns of South Pacific overturning inferred from 231Pa and 230Th |
title_full |
Deglacial patterns of South Pacific overturning inferred from 231Pa and 230Th |
title_fullStr |
Deglacial patterns of South Pacific overturning inferred from 231Pa and 230Th |
title_full_unstemmed |
Deglacial patterns of South Pacific overturning inferred from 231Pa and 230Th |
title_sort |
deglacial patterns of south pacific overturning inferred from 231pa and 230th |
publishDate |
2021 |
url |
https://serval.unil.ch/notice/serval:BIB_E89266303BD1 https://doi.org/10.1038/s41598-021-00111-1 https://serval.unil.ch/resource/serval:BIB_E89266303BD1.P001/REF.pdf http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_E89266303BD12 |
geographic |
Pacific Southern Ocean |
geographic_facet |
Pacific Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Scientific Reports, vol. 11, no. 1 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-021-00111-1 info:eu-repo/semantics/altIdentifier/pissn/2045-2322 info:eu-repo/grantAgreement/SNF/Careers/PP00P2_172915/// info:eu-repo/semantics/altIdentifier/urn/urn:nbn:ch:serval-BIB_E89266303BD12 https://serval.unil.ch/notice/serval:BIB_E89266303BD1 doi:10.1038/s41598-021-00111-1 https://serval.unil.ch/resource/serval:BIB_E89266303BD1.P001/REF.pdf http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_E89266303BD12 |
op_rights |
info:eu-repo/semantics/openAccess CC BY 4.0 https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1038/s41598-021-00111-1 |
container_title |
Scientific Reports |
container_volume |
11 |
container_issue |
1 |
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1790608453482315776 |