The influence of deep water circulation on the distribution of 231Pa and 230Th in the Pacific Ocean
Sedimentary 231Pa/230Th ratios have been used in the Atlantic Ocean as a proxy to reconstruct past changes in the strength and geometry of the Atlantic Meridional Overturning Circulation (AMOC), stemming from the southward export of 231Pa by the North Atlantic Deep Water (NADW). However, deep waters...
Published in: | Earth and Planetary Science Letters |
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ftunivlausanne:oai:serval.unil.ch:BIB_03652657FA22 2024-02-11T10:05:53+01:00 The influence of deep water circulation on the distribution of 231Pa and 230Th in the Pacific Ocean Luo, Yiming Lippold, Jörg Allen, Susan E. Tjiputra, Jerry Jaccard, Samuel L. Francois, Roger 2021-01-15 application/pdf https://serval.unil.ch/notice/serval:BIB_03652657FA22 https://doi.org/10.1016/j.epsl.2020.116674 https://serval.unil.ch/resource/serval:BIB_03652657FA22.P001/REF.pdf eng eng info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2020.116674 info:eu-repo/semantics/altIdentifier/pissn/0012-821X info:eu-repo/grantAgreement/SNF/Projects/PP00P2_172915/// info:eu-repo/grantAgreement/SNF/Careers/PP00P2_144811/// https://serval.unil.ch/notice/serval:BIB_03652657FA22 doi:10.1016/j.epsl.2020.116674 https://serval.unil.ch/resource/serval:BIB_03652657FA22.P001/REF.pdf info:eu-repo/semantics/restrictedAccess Restricted: indefinite embargo Copying allowed only for non-profit organizations https://serval.unil.ch/disclaimer Earth and Planetary Science Letters, vol. 554, pp. 116674 Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Geochemistry and Petrology Geophysics info:eu-repo/semantics/article article info:eu-repo/semantics/publishedVersion 2021 ftunivlausanne https://doi.org/10.1016/j.epsl.2020.116674 2024-01-22T01:21:16Z Sedimentary 231Pa/230Th ratios have been used in the Atlantic Ocean as a proxy to reconstruct past changes in the strength and geometry of the Atlantic Meridional Overturning Circulation (AMOC), stemming from the southward export of 231Pa by the North Atlantic Deep Water (NADW). However, deep waters in the Pacific Ocean have a longer residence time, so that Pacific sedimentary 231Pa/230Th ratios are more strongly affected by particle/boundary scavenging, which obscures the influence of deep water circulation. The goal of this study is to examine how the Pacific Meridional Overturning Circulation (PMOC) affects the distribution of 231Pa and 230Th in the water column and sediment of the Pacific Ocean, and to explore whether sedimentary 231Pa/230Th ratios could provide useful constraints on past changes of the deep Pacific circulation. We examine the existing Pacific sedimentary 231Pa/230Th database and demonstrate that the Pacific Meridional Overturning Circulation (PMOC) has a distinctive influence on the distribution of sedimentary 231Pa/230Th. Using a 2D scavenging model with a simplified representation of the Pacific deep water circulation, we show that Pacific sedimentary 231Pa/230Th could potentially provide information on past variability in PMOC. Article in Journal/Newspaper NADW North Atlantic Deep Water North Atlantic Université de Lausanne (UNIL): Serval - Serveur académique lausannois Pacific Earth and Planetary Science Letters 554 116674 |
institution |
Open Polar |
collection |
Université de Lausanne (UNIL): Serval - Serveur académique lausannois |
op_collection_id |
ftunivlausanne |
language |
English |
topic |
Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Geochemistry and Petrology Geophysics |
spellingShingle |
Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Geochemistry and Petrology Geophysics Luo, Yiming Lippold, Jörg Allen, Susan E. Tjiputra, Jerry Jaccard, Samuel L. Francois, Roger The influence of deep water circulation on the distribution of 231Pa and 230Th in the Pacific Ocean |
topic_facet |
Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Geochemistry and Petrology Geophysics |
description |
Sedimentary 231Pa/230Th ratios have been used in the Atlantic Ocean as a proxy to reconstruct past changes in the strength and geometry of the Atlantic Meridional Overturning Circulation (AMOC), stemming from the southward export of 231Pa by the North Atlantic Deep Water (NADW). However, deep waters in the Pacific Ocean have a longer residence time, so that Pacific sedimentary 231Pa/230Th ratios are more strongly affected by particle/boundary scavenging, which obscures the influence of deep water circulation. The goal of this study is to examine how the Pacific Meridional Overturning Circulation (PMOC) affects the distribution of 231Pa and 230Th in the water column and sediment of the Pacific Ocean, and to explore whether sedimentary 231Pa/230Th ratios could provide useful constraints on past changes of the deep Pacific circulation. We examine the existing Pacific sedimentary 231Pa/230Th database and demonstrate that the Pacific Meridional Overturning Circulation (PMOC) has a distinctive influence on the distribution of sedimentary 231Pa/230Th. Using a 2D scavenging model with a simplified representation of the Pacific deep water circulation, we show that Pacific sedimentary 231Pa/230Th could potentially provide information on past variability in PMOC. |
format |
Article in Journal/Newspaper |
author |
Luo, Yiming Lippold, Jörg Allen, Susan E. Tjiputra, Jerry Jaccard, Samuel L. Francois, Roger |
author_facet |
Luo, Yiming Lippold, Jörg Allen, Susan E. Tjiputra, Jerry Jaccard, Samuel L. Francois, Roger |
author_sort |
Luo, Yiming |
title |
The influence of deep water circulation on the distribution of 231Pa and 230Th in the Pacific Ocean |
title_short |
The influence of deep water circulation on the distribution of 231Pa and 230Th in the Pacific Ocean |
title_full |
The influence of deep water circulation on the distribution of 231Pa and 230Th in the Pacific Ocean |
title_fullStr |
The influence of deep water circulation on the distribution of 231Pa and 230Th in the Pacific Ocean |
title_full_unstemmed |
The influence of deep water circulation on the distribution of 231Pa and 230Th in the Pacific Ocean |
title_sort |
influence of deep water circulation on the distribution of 231pa and 230th in the pacific ocean |
publishDate |
2021 |
url |
https://serval.unil.ch/notice/serval:BIB_03652657FA22 https://doi.org/10.1016/j.epsl.2020.116674 https://serval.unil.ch/resource/serval:BIB_03652657FA22.P001/REF.pdf |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
NADW North Atlantic Deep Water North Atlantic |
genre_facet |
NADW North Atlantic Deep Water North Atlantic |
op_source |
Earth and Planetary Science Letters, vol. 554, pp. 116674 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2020.116674 info:eu-repo/semantics/altIdentifier/pissn/0012-821X info:eu-repo/grantAgreement/SNF/Projects/PP00P2_172915/// info:eu-repo/grantAgreement/SNF/Careers/PP00P2_144811/// https://serval.unil.ch/notice/serval:BIB_03652657FA22 doi:10.1016/j.epsl.2020.116674 https://serval.unil.ch/resource/serval:BIB_03652657FA22.P001/REF.pdf |
op_rights |
info:eu-repo/semantics/restrictedAccess Restricted: indefinite embargo Copying allowed only for non-profit organizations https://serval.unil.ch/disclaimer |
op_doi |
https://doi.org/10.1016/j.epsl.2020.116674 |
container_title |
Earth and Planetary Science Letters |
container_volume |
554 |
container_start_page |
116674 |
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1790603099494154240 |