Miocene restriction of the Pacific-North Atlantic throughflow strengthened Atlantic overturning circulation
Export of warm and salty waters from the Caribbean to the North Atlantic is an essential component of the Atlantic Meridional Overturning Circulation (AMOC). However, there was also an active AMOC during the Miocene, despite evidence for an open Central American Seaway (CAS) that would have allowed...
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Nature Research
2019
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Online Access: | https://oceanrep.geomar.de/id/eprint/47773/ https://oceanrep.geomar.de/id/eprint/47773/1/s41467-019-12034-7.pdf https://oceanrep.geomar.de/id/eprint/47773/2/41467_2019_12034_MOESM1_ESM.docx https://oceanrep.geomar.de/id/eprint/47773/9/pm_2019_42_AMOC-Mioza%CC%88n.pdf https://oceanrep.geomar.de/id/eprint/47773/10/pm_2019_42_AMOC_en.pdf https://doi.org/10.1038/s41467-019-12034-7 |
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ftoceanrep:oai:oceanrep.geomar.de:47773 2023-05-15T17:29:06+02:00 Miocene restriction of the Pacific-North Atlantic throughflow strengthened Atlantic overturning circulation Kirillova, Valeriia Osborne, Anne Helen Störling, Tjördis Frank, Martin 2019-09-06 text https://oceanrep.geomar.de/id/eprint/47773/ https://oceanrep.geomar.de/id/eprint/47773/1/s41467-019-12034-7.pdf https://oceanrep.geomar.de/id/eprint/47773/2/41467_2019_12034_MOESM1_ESM.docx https://oceanrep.geomar.de/id/eprint/47773/9/pm_2019_42_AMOC-Mioza%CC%88n.pdf https://oceanrep.geomar.de/id/eprint/47773/10/pm_2019_42_AMOC_en.pdf https://doi.org/10.1038/s41467-019-12034-7 en de eng ger Nature Research https://oceanrep.geomar.de/id/eprint/47773/1/s41467-019-12034-7.pdf https://oceanrep.geomar.de/id/eprint/47773/2/41467_2019_12034_MOESM1_ESM.docx https://oceanrep.geomar.de/id/eprint/47773/9/pm_2019_42_AMOC-Mioza%CC%88n.pdf https://oceanrep.geomar.de/id/eprint/47773/10/pm_2019_42_AMOC_en.pdf Kirillova, V., Osborne, A. H. , Störling, T. and Frank, M. (2019) Miocene restriction of the Pacific-North Atlantic throughflow strengthened Atlantic overturning circulation. Open Access Nature Communications, 10 (Article number: 4025 ). DOI 10.1038/s41467-019-12034-7 <https://doi.org/10.1038/s41467-019-12034-7>. doi:10.1038/s41467-019-12034-7 cc_by_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2019 ftoceanrep https://doi.org/10.1038/s41467-019-12034-7 2023-04-07T15:47:19Z Export of warm and salty waters from the Caribbean to the North Atlantic is an essential component of the Atlantic Meridional Overturning Circulation (AMOC). However, there was also an active AMOC during the Miocene, despite evidence for an open Central American Seaway (CAS) that would have allowed low-salinity Pacific waters to enter the Caribbean. To address this apparent contradiction and to constrain the timing of CAS closure we present the first continuous Nd isotope record of intermediate waters in the Florida Strait over the past 12.5 million years. Our results indicate that there was no direct intermediate water mass export from the Caribbean to the Florida Strait between 11.5 and 9.5 Ma, at the same time as a strengthened AMOC. After 9 Ma a strong AMOC was maintained due to a major step in CAS closure and the consequent cessation of low-salinity Pacific waters entering the Caribbean. Article in Journal/Newspaper North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Pacific Nature Communications 10 1 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English German |
description |
Export of warm and salty waters from the Caribbean to the North Atlantic is an essential component of the Atlantic Meridional Overturning Circulation (AMOC). However, there was also an active AMOC during the Miocene, despite evidence for an open Central American Seaway (CAS) that would have allowed low-salinity Pacific waters to enter the Caribbean. To address this apparent contradiction and to constrain the timing of CAS closure we present the first continuous Nd isotope record of intermediate waters in the Florida Strait over the past 12.5 million years. Our results indicate that there was no direct intermediate water mass export from the Caribbean to the Florida Strait between 11.5 and 9.5 Ma, at the same time as a strengthened AMOC. After 9 Ma a strong AMOC was maintained due to a major step in CAS closure and the consequent cessation of low-salinity Pacific waters entering the Caribbean. |
format |
Article in Journal/Newspaper |
author |
Kirillova, Valeriia Osborne, Anne Helen Störling, Tjördis Frank, Martin |
spellingShingle |
Kirillova, Valeriia Osborne, Anne Helen Störling, Tjördis Frank, Martin Miocene restriction of the Pacific-North Atlantic throughflow strengthened Atlantic overturning circulation |
author_facet |
Kirillova, Valeriia Osborne, Anne Helen Störling, Tjördis Frank, Martin |
author_sort |
Kirillova, Valeriia |
title |
Miocene restriction of the Pacific-North Atlantic throughflow strengthened Atlantic overturning circulation |
title_short |
Miocene restriction of the Pacific-North Atlantic throughflow strengthened Atlantic overturning circulation |
title_full |
Miocene restriction of the Pacific-North Atlantic throughflow strengthened Atlantic overturning circulation |
title_fullStr |
Miocene restriction of the Pacific-North Atlantic throughflow strengthened Atlantic overturning circulation |
title_full_unstemmed |
Miocene restriction of the Pacific-North Atlantic throughflow strengthened Atlantic overturning circulation |
title_sort |
miocene restriction of the pacific-north atlantic throughflow strengthened atlantic overturning circulation |
publisher |
Nature Research |
publishDate |
2019 |
url |
https://oceanrep.geomar.de/id/eprint/47773/ https://oceanrep.geomar.de/id/eprint/47773/1/s41467-019-12034-7.pdf https://oceanrep.geomar.de/id/eprint/47773/2/41467_2019_12034_MOESM1_ESM.docx https://oceanrep.geomar.de/id/eprint/47773/9/pm_2019_42_AMOC-Mioza%CC%88n.pdf https://oceanrep.geomar.de/id/eprint/47773/10/pm_2019_42_AMOC_en.pdf https://doi.org/10.1038/s41467-019-12034-7 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/47773/1/s41467-019-12034-7.pdf https://oceanrep.geomar.de/id/eprint/47773/2/41467_2019_12034_MOESM1_ESM.docx https://oceanrep.geomar.de/id/eprint/47773/9/pm_2019_42_AMOC-Mioza%CC%88n.pdf https://oceanrep.geomar.de/id/eprint/47773/10/pm_2019_42_AMOC_en.pdf Kirillova, V., Osborne, A. H. , Störling, T. and Frank, M. (2019) Miocene restriction of the Pacific-North Atlantic throughflow strengthened Atlantic overturning circulation. Open Access Nature Communications, 10 (Article number: 4025 ). DOI 10.1038/s41467-019-12034-7 <https://doi.org/10.1038/s41467-019-12034-7>. doi:10.1038/s41467-019-12034-7 |
op_rights |
cc_by_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41467-019-12034-7 |
container_title |
Nature Communications |
container_volume |
10 |
container_issue |
1 |
_version_ |
1766122698647273472 |