Enhanced long-term mixing of deep western-boundary currents in the north Pacific Ocean after Panama seaway closure ...
Closure of the Panama seaway significantly impacted global climate and environmental change with the development of modern oceanic circulation. It remains unclear as to the evolution of north Pacific western-boundary deep circulation after Panama seaway closure. Here, we summarize published Nd isoto...
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Online Access: | https://dx.doi.org/10.5281/zenodo.8369316 https://zenodo.org/record/8369316 |
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ftdatacite:10.5281/zenodo.8369316 2023-11-05T03:36:58+01:00 Enhanced long-term mixing of deep western-boundary currents in the north Pacific Ocean after Panama seaway closure ... Xiaodong, Jiang 2023 https://dx.doi.org/10.5281/zenodo.8369316 https://zenodo.org/record/8369316 unknown Zenodo https://dx.doi.org/10.5281/zenodo.8369317 Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess JournalArticle article-journal ScholarlyArticle 2023 ftdatacite https://doi.org/10.5281/zenodo.836931610.5281/zenodo.8369317 2023-10-09T11:02:45Z Closure of the Panama seaway significantly impacted global climate and environmental change with the development of modern oceanic circulation. It remains unclear as to the evolution of north Pacific western-boundary deep circulation after Panama seaway closure. Here, we summarize published Nd isotope data for the north Pacific and Atlantic, combined with amorphous Fe hydroxide (AFHs; a newly developed water-mass proxy) of Fe-Mn nodule from the western Pacific to investigate deep-current evolution since the late Miocene. Our results show a prominent deep-water mass change in the north Pacific at ~5 Ma, indicating the Panama seaway shoaling had disrupted the exchange of intermediate water masses between the Pacific and Atlantic. A decrease trend occurred in the western currents of the north Pacific since ~3 Ma, which contradicts with intensified Antarctic bottom water since ~3.4 Ma. This contradiction can be resolved by enhanced south-north mixing of deep western-boundary currents in the north Pacific. ... Article in Journal/Newspaper Antarc* Antarctic DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
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description |
Closure of the Panama seaway significantly impacted global climate and environmental change with the development of modern oceanic circulation. It remains unclear as to the evolution of north Pacific western-boundary deep circulation after Panama seaway closure. Here, we summarize published Nd isotope data for the north Pacific and Atlantic, combined with amorphous Fe hydroxide (AFHs; a newly developed water-mass proxy) of Fe-Mn nodule from the western Pacific to investigate deep-current evolution since the late Miocene. Our results show a prominent deep-water mass change in the north Pacific at ~5 Ma, indicating the Panama seaway shoaling had disrupted the exchange of intermediate water masses between the Pacific and Atlantic. A decrease trend occurred in the western currents of the north Pacific since ~3 Ma, which contradicts with intensified Antarctic bottom water since ~3.4 Ma. This contradiction can be resolved by enhanced south-north mixing of deep western-boundary currents in the north Pacific. ... |
format |
Article in Journal/Newspaper |
author |
Xiaodong, Jiang |
spellingShingle |
Xiaodong, Jiang Enhanced long-term mixing of deep western-boundary currents in the north Pacific Ocean after Panama seaway closure ... |
author_facet |
Xiaodong, Jiang |
author_sort |
Xiaodong, Jiang |
title |
Enhanced long-term mixing of deep western-boundary currents in the north Pacific Ocean after Panama seaway closure ... |
title_short |
Enhanced long-term mixing of deep western-boundary currents in the north Pacific Ocean after Panama seaway closure ... |
title_full |
Enhanced long-term mixing of deep western-boundary currents in the north Pacific Ocean after Panama seaway closure ... |
title_fullStr |
Enhanced long-term mixing of deep western-boundary currents in the north Pacific Ocean after Panama seaway closure ... |
title_full_unstemmed |
Enhanced long-term mixing of deep western-boundary currents in the north Pacific Ocean after Panama seaway closure ... |
title_sort |
enhanced long-term mixing of deep western-boundary currents in the north pacific ocean after panama seaway closure ... |
publisher |
Zenodo |
publishDate |
2023 |
url |
https://dx.doi.org/10.5281/zenodo.8369316 https://zenodo.org/record/8369316 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://dx.doi.org/10.5281/zenodo.8369317 |
op_rights |
Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5281/zenodo.836931610.5281/zenodo.8369317 |
_version_ |
1781692290016739328 |