Progressive Progressive intensification of Pacific Deep Water circulation since the early Pliocene
An important stage in global ocean overturning circulation is the upwelling of the Antarctic Bottom Water into the Pacific Deep Water (PDW). The long-term evolution of PDW circulation, however, is scarcely addressed. We use seismic reflection data and cores from the International Ocean Discovery Pro...
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Online Access: | https://doi.org/10.1029/2022GL098051 http://ecite.utas.edu.au/152949 |
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ftunivtasecite:oai:ecite.utas.edu.au:152949 2023-05-15T13:42:40+02:00 Progressive Progressive intensification of Pacific Deep Water circulation since the early Pliocene Yin, S Hernandez-Molina, FJ Jutzeler, M Li, J 2022 https://doi.org/10.1029/2022GL098051 http://ecite.utas.edu.au/152949 en eng Amer Geophysical Union http://dx.doi.org/10.1029/2022GL098051 Yin, S and Hernandez-Molina, FJ and Jutzeler, M and Li, J, Progressive Progressive intensification of Pacific Deep Water circulation since the early Pliocene, Geophysical Research Letters, 49, (9) Article e2022GL098051. ISSN 0094-8276 (2022) [Refereed Article] http://ecite.utas.edu.au/152949 Earth Sciences Geology Sedimentology Refereed Article PeerReviewed 2022 ftunivtasecite https://doi.org/10.1029/2022GL098051 2022-10-31T23:17:14Z An important stage in global ocean overturning circulation is the upwelling of the Antarctic Bottom Water into the Pacific Deep Water (PDW). The long-term evolution of PDW circulation, however, is scarcely addressed. We use seismic reflection data and cores from the International Ocean Discovery Program (and its predecessors) in contourites to reconstruct regional deep ocean circulation patterns. Here, we demonstrate that PDW circulation was progressively enhanced at about 4.35, 3.84, 2.16, and 0.97 Ma since the early Pliocene. Coeval growth of volcanic arcs and tectonic uplifts gradually isolated marginal seas from the PDW and, in conjunction with climate cooling, effectively increasing deep-water flux within a shrinking Pacific basin. Regional stratigraphic discontinuities in contourites indicate thresholds in the intensification of ocean circulation. Article in Journal/Newspaper Antarc* Antarctic eCite UTAS (University of Tasmania) Antarctic Pacific The Antarctic Geophysical Research Letters 49 9 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Geology Sedimentology |
spellingShingle |
Earth Sciences Geology Sedimentology Yin, S Hernandez-Molina, FJ Jutzeler, M Li, J Progressive Progressive intensification of Pacific Deep Water circulation since the early Pliocene |
topic_facet |
Earth Sciences Geology Sedimentology |
description |
An important stage in global ocean overturning circulation is the upwelling of the Antarctic Bottom Water into the Pacific Deep Water (PDW). The long-term evolution of PDW circulation, however, is scarcely addressed. We use seismic reflection data and cores from the International Ocean Discovery Program (and its predecessors) in contourites to reconstruct regional deep ocean circulation patterns. Here, we demonstrate that PDW circulation was progressively enhanced at about 4.35, 3.84, 2.16, and 0.97 Ma since the early Pliocene. Coeval growth of volcanic arcs and tectonic uplifts gradually isolated marginal seas from the PDW and, in conjunction with climate cooling, effectively increasing deep-water flux within a shrinking Pacific basin. Regional stratigraphic discontinuities in contourites indicate thresholds in the intensification of ocean circulation. |
format |
Article in Journal/Newspaper |
author |
Yin, S Hernandez-Molina, FJ Jutzeler, M Li, J |
author_facet |
Yin, S Hernandez-Molina, FJ Jutzeler, M Li, J |
author_sort |
Yin, S |
title |
Progressive Progressive intensification of Pacific Deep Water circulation since the early Pliocene |
title_short |
Progressive Progressive intensification of Pacific Deep Water circulation since the early Pliocene |
title_full |
Progressive Progressive intensification of Pacific Deep Water circulation since the early Pliocene |
title_fullStr |
Progressive Progressive intensification of Pacific Deep Water circulation since the early Pliocene |
title_full_unstemmed |
Progressive Progressive intensification of Pacific Deep Water circulation since the early Pliocene |
title_sort |
progressive progressive intensification of pacific deep water circulation since the early pliocene |
publisher |
Amer Geophysical Union |
publishDate |
2022 |
url |
https://doi.org/10.1029/2022GL098051 http://ecite.utas.edu.au/152949 |
geographic |
Antarctic Pacific The Antarctic |
geographic_facet |
Antarctic Pacific The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
http://dx.doi.org/10.1029/2022GL098051 Yin, S and Hernandez-Molina, FJ and Jutzeler, M and Li, J, Progressive Progressive intensification of Pacific Deep Water circulation since the early Pliocene, Geophysical Research Letters, 49, (9) Article e2022GL098051. ISSN 0094-8276 (2022) [Refereed Article] http://ecite.utas.edu.au/152949 |
op_doi |
https://doi.org/10.1029/2022GL098051 |
container_title |
Geophysical Research Letters |
container_volume |
49 |
container_issue |
9 |
_version_ |
1766171462112116736 |