Radioisotope constraints of Arctic deep water export to the North Atlantic
The export of deep water from the Arctic to the Atlantic contributes to the formation of North Atlantic Deep Water, a crucial component of global ocean circulation. Records of protactinium-231 ((231)Pa) and thorium-230 ((230)Th) in Arctic sediments can provide a measure of this export, but well-cons...
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ftpubmed:oai:pubmedcentral.nih.gov:8209033 2023-05-15T14:32:28+02:00 Radioisotope constraints of Arctic deep water export to the North Atlantic Kipp, Lauren E. McManus, Jerry F. Kienast, Markus 2021-06-16 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8209033/ http://www.ncbi.nlm.nih.gov/pubmed/34135336 https://doi.org/10.1038/s41467-021-23877-4 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8209033/ http://www.ncbi.nlm.nih.gov/pubmed/34135336 http://dx.doi.org/10.1038/s41467-021-23877-4 © The Author(s) 2021 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 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/ (https://creativecommons.org/licenses/by/4.0/) . CC-BY Nat Commun Article Text 2021 ftpubmed https://doi.org/10.1038/s41467-021-23877-4 2021-07-04T00:37:53Z The export of deep water from the Arctic to the Atlantic contributes to the formation of North Atlantic Deep Water, a crucial component of global ocean circulation. Records of protactinium-231 ((231)Pa) and thorium-230 ((230)Th) in Arctic sediments can provide a measure of this export, but well-constrained sedimentary budgets of these isotopes have been difficult to achieve in the Arctic Ocean. Previous studies revealed a deficit of (231)Pa in central Arctic sediments, implying that some (231)Pa is either transported to the margins, where it may be removed in areas of higher particle flux, or exported from the Arctic via deep water advection. Here we investigate this “missing sink” of Arctic (231)Pa and find moderately increased (231)Pa deposition along Arctic margins. Nonetheless, we determine that most (231)Pa missing from the central basin must be lost via advection into the Nordic Seas, requiring deep water advection of 1.1 – 6.4 Sv through Fram Strait. Text Arctic Arctic Ocean Fram Strait Nordic Seas North Atlantic Deep Water North Atlantic PubMed Central (PMC) Arctic Arctic Ocean Central Basin ENVELOPE(43.000,43.000,73.500,73.500) Nature Communications 12 1 |
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Article Kipp, Lauren E. McManus, Jerry F. Kienast, Markus Radioisotope constraints of Arctic deep water export to the North Atlantic |
topic_facet |
Article |
description |
The export of deep water from the Arctic to the Atlantic contributes to the formation of North Atlantic Deep Water, a crucial component of global ocean circulation. Records of protactinium-231 ((231)Pa) and thorium-230 ((230)Th) in Arctic sediments can provide a measure of this export, but well-constrained sedimentary budgets of these isotopes have been difficult to achieve in the Arctic Ocean. Previous studies revealed a deficit of (231)Pa in central Arctic sediments, implying that some (231)Pa is either transported to the margins, where it may be removed in areas of higher particle flux, or exported from the Arctic via deep water advection. Here we investigate this “missing sink” of Arctic (231)Pa and find moderately increased (231)Pa deposition along Arctic margins. Nonetheless, we determine that most (231)Pa missing from the central basin must be lost via advection into the Nordic Seas, requiring deep water advection of 1.1 – 6.4 Sv through Fram Strait. |
format |
Text |
author |
Kipp, Lauren E. McManus, Jerry F. Kienast, Markus |
author_facet |
Kipp, Lauren E. McManus, Jerry F. Kienast, Markus |
author_sort |
Kipp, Lauren E. |
title |
Radioisotope constraints of Arctic deep water export to the North Atlantic |
title_short |
Radioisotope constraints of Arctic deep water export to the North Atlantic |
title_full |
Radioisotope constraints of Arctic deep water export to the North Atlantic |
title_fullStr |
Radioisotope constraints of Arctic deep water export to the North Atlantic |
title_full_unstemmed |
Radioisotope constraints of Arctic deep water export to the North Atlantic |
title_sort |
radioisotope constraints of arctic deep water export to the north atlantic |
publisher |
Nature Publishing Group UK |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8209033/ http://www.ncbi.nlm.nih.gov/pubmed/34135336 https://doi.org/10.1038/s41467-021-23877-4 |
long_lat |
ENVELOPE(43.000,43.000,73.500,73.500) |
geographic |
Arctic Arctic Ocean Central Basin |
geographic_facet |
Arctic Arctic Ocean Central Basin |
genre |
Arctic Arctic Ocean Fram Strait Nordic Seas North Atlantic Deep Water North Atlantic |
genre_facet |
Arctic Arctic Ocean Fram Strait Nordic Seas North Atlantic Deep Water North Atlantic |
op_source |
Nat Commun |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8209033/ http://www.ncbi.nlm.nih.gov/pubmed/34135336 http://dx.doi.org/10.1038/s41467-021-23877-4 |
op_rights |
© The Author(s) 2021 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 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/ (https://creativecommons.org/licenses/by/4.0/) . |
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CC-BY |
op_doi |
https://doi.org/10.1038/s41467-021-23877-4 |
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Nature Communications |
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12 |
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1 |
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1766305872723574784 |