Middle-late Pleistocene deep water circulation in the southwest subtropical Pacific
The modern delta(13)C(DIC) distribution in southwest subtropical Pacific deep waters is consistent with a regional mixing regime between water masses of open Pacific Ocean and Tasman Sea origin. This mixing regime is reconstructed across the middle-late Pleistocene using a record of benthic foramini...
Published in: | Paleoceanography |
---|---|
Main Authors: | , , , , , |
Format: | Text |
Language: | English |
Published: |
Amer Geophysical Union
2009
|
Subjects: | |
Online Access: | https://doi.org/10.1029/2009PA001755 https://archimer.ifremer.fr/doc/00144/25522/23666.pdf https://archimer.ifremer.fr/doc/00144/25522/ |
id |
fttriple:oai:gotriple.eu:10670/1.wu8qg4 |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:10670/1.wu8qg4 2023-05-15T18:24:53+02:00 Middle-late Pleistocene deep water circulation in the southwest subtropical Pacific Russon, T. Elliot, M. Kissel, C. Cabioch, G. De Deckker, P. Correge, T. 2009-01-01 https://doi.org/10.1029/2009PA001755 https://archimer.ifremer.fr/doc/00144/25522/23666.pdf https://archimer.ifremer.fr/doc/00144/25522/ en eng Amer Geophysical Union doi:10.1029/2009PA001755 10670/1.wu8qg4 https://archimer.ifremer.fr/doc/00144/25522/23666.pdf https://archimer.ifremer.fr/doc/00144/25522/ other Archimer, archive institutionnelle de l'Ifremer Paleoceanography (0883-8305) (Amer Geophysical Union), 2009-10 , Vol. 24 , P. - geo envir Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ 2009 fttriple https://doi.org/10.1029/2009PA001755 2023-01-22T18:28:41Z The modern delta(13)C(DIC) distribution in southwest subtropical Pacific deep waters is consistent with a regional mixing regime between water masses of open Pacific Ocean and Tasman Sea origin. This mixing regime is reconstructed across the middle-late Pleistocene using a record of benthic foraminiferal delta(13)C in a sediment core from the New Caledonia Trough. The relative influence on the mixing regime from open Pacific Ocean deep waters is seen to be significantly reduced during glacial in comparison to interglacial stages over the past 1.1 Ma. The spatial delta(13)C gradient in the Southern Ocean between deep waters entering the Tasman Sea and the open Pacific Ocean is shown to be consequently greater during glacial than interglacial stages but was generally reduced across the period of the Middle Pleistocene Transition. The existence of strong spatial chemical gradients in the glacial Southern Ocean limits its capacity to act as an enhanced sink for atmospheric carbon. Text Southern Ocean Unknown Pacific Southern Ocean Paleoceanography 24 4 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir Russon, T. Elliot, M. Kissel, C. Cabioch, G. De Deckker, P. Correge, T. Middle-late Pleistocene deep water circulation in the southwest subtropical Pacific |
topic_facet |
geo envir |
description |
The modern delta(13)C(DIC) distribution in southwest subtropical Pacific deep waters is consistent with a regional mixing regime between water masses of open Pacific Ocean and Tasman Sea origin. This mixing regime is reconstructed across the middle-late Pleistocene using a record of benthic foraminiferal delta(13)C in a sediment core from the New Caledonia Trough. The relative influence on the mixing regime from open Pacific Ocean deep waters is seen to be significantly reduced during glacial in comparison to interglacial stages over the past 1.1 Ma. The spatial delta(13)C gradient in the Southern Ocean between deep waters entering the Tasman Sea and the open Pacific Ocean is shown to be consequently greater during glacial than interglacial stages but was generally reduced across the period of the Middle Pleistocene Transition. The existence of strong spatial chemical gradients in the glacial Southern Ocean limits its capacity to act as an enhanced sink for atmospheric carbon. |
format |
Text |
author |
Russon, T. Elliot, M. Kissel, C. Cabioch, G. De Deckker, P. Correge, T. |
author_facet |
Russon, T. Elliot, M. Kissel, C. Cabioch, G. De Deckker, P. Correge, T. |
author_sort |
Russon, T. |
title |
Middle-late Pleistocene deep water circulation in the southwest subtropical Pacific |
title_short |
Middle-late Pleistocene deep water circulation in the southwest subtropical Pacific |
title_full |
Middle-late Pleistocene deep water circulation in the southwest subtropical Pacific |
title_fullStr |
Middle-late Pleistocene deep water circulation in the southwest subtropical Pacific |
title_full_unstemmed |
Middle-late Pleistocene deep water circulation in the southwest subtropical Pacific |
title_sort |
middle-late pleistocene deep water circulation in the southwest subtropical pacific |
publisher |
Amer Geophysical Union |
publishDate |
2009 |
url |
https://doi.org/10.1029/2009PA001755 https://archimer.ifremer.fr/doc/00144/25522/23666.pdf https://archimer.ifremer.fr/doc/00144/25522/ |
geographic |
Pacific Southern Ocean |
geographic_facet |
Pacific Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Archimer, archive institutionnelle de l'Ifremer Paleoceanography (0883-8305) (Amer Geophysical Union), 2009-10 , Vol. 24 , P. - |
op_relation |
doi:10.1029/2009PA001755 10670/1.wu8qg4 https://archimer.ifremer.fr/doc/00144/25522/23666.pdf https://archimer.ifremer.fr/doc/00144/25522/ |
op_rights |
other |
op_doi |
https://doi.org/10.1029/2009PA001755 |
container_title |
Paleoceanography |
container_volume |
24 |
container_issue |
4 |
_version_ |
1766205894728613888 |