Ventilation changes in the western North Pacific since the last glacial period
We reconstructed the ventilation record of deep water at 2100m depth in the mid-latitude western North Pacific over the past 25 kyr from radiocarbon measurements of coexisting planktic and benthic foraminiferal shells in sediment with a high sedimentation rate. The C-14 data on fragile and robust pl...
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Copernicus Gesellschaft Mbh
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ftarchimer:oai:archimer.ifremer.fr:38497 2023-05-15T17:33:47+02:00 Ventilation changes in the western North Pacific since the last glacial period Okazaki, Y. Sagawa, T. Asahi, H. Horikawa, K. Onodera, J. 2012 application/pdf https://archimer.ifremer.fr/doc/00274/38497/36964.pdf https://doi.org/10.5194/cp-8-17-2012 https://archimer.ifremer.fr/doc/00274/38497/ eng eng Copernicus Gesellschaft Mbh https://archimer.ifremer.fr/doc/00274/38497/36964.pdf doi:10.5194/cp-8-17-2012 https://archimer.ifremer.fr/doc/00274/38497/ Author(s) 2012. This work is distributed under the Creative Commons Attribution 3.0 License. info:eu-repo/semantics/openAccess restricted use CC-BY Climate Of The Past (1814-9324) (Copernicus Gesellschaft Mbh), 2012 , Vol. 8 , N. 1 , P. 17-24 text Publication info:eu-repo/semantics/article 2012 ftarchimer https://doi.org/10.5194/cp-8-17-2012 2021-09-23T20:26:29Z We reconstructed the ventilation record of deep water at 2100m depth in the mid-latitude western North Pacific over the past 25 kyr from radiocarbon measurements of coexisting planktic and benthic foraminiferal shells in sediment with a high sedimentation rate. The C-14 data on fragile and robust planktic foraminiferal shells were concordant with each other, ensuring high quality of the reconstructed ventilation record. The radiocarbon activity changes were consistent with the atmospheric record, suggesting that no massive mixing of old carbon from the abyssal reservoir occurred throughout the glacial to deglacial periods. margin of the North Pacific, in a deep western boundary current analogous to the present one in the North Atlantic. However, our knowledge of paleo-ventilation, particularly in water deeper than 2000m in the western North Pacific, is limited because of poor preservation of foraminiferal shells in sediment. Here we present a detailed account of ventilation changes in the mid-latitude western North Pacific based on radiocarbon records from coexisting planktic and benthic foraminifera in sediment with high sedimentation rates. Because our ventilation reconstruction is based on radiocarbon data from multiple planktic species in the mid to high-latitude western North Pacific, our record provides robust evidence for the ventilation history in the region. Article in Journal/Newspaper North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Pacific Climate of the Past 8 1 17 24 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
We reconstructed the ventilation record of deep water at 2100m depth in the mid-latitude western North Pacific over the past 25 kyr from radiocarbon measurements of coexisting planktic and benthic foraminiferal shells in sediment with a high sedimentation rate. The C-14 data on fragile and robust planktic foraminiferal shells were concordant with each other, ensuring high quality of the reconstructed ventilation record. The radiocarbon activity changes were consistent with the atmospheric record, suggesting that no massive mixing of old carbon from the abyssal reservoir occurred throughout the glacial to deglacial periods. margin of the North Pacific, in a deep western boundary current analogous to the present one in the North Atlantic. However, our knowledge of paleo-ventilation, particularly in water deeper than 2000m in the western North Pacific, is limited because of poor preservation of foraminiferal shells in sediment. Here we present a detailed account of ventilation changes in the mid-latitude western North Pacific based on radiocarbon records from coexisting planktic and benthic foraminifera in sediment with high sedimentation rates. Because our ventilation reconstruction is based on radiocarbon data from multiple planktic species in the mid to high-latitude western North Pacific, our record provides robust evidence for the ventilation history in the region. |
format |
Article in Journal/Newspaper |
author |
Okazaki, Y. Sagawa, T. Asahi, H. Horikawa, K. Onodera, J. |
spellingShingle |
Okazaki, Y. Sagawa, T. Asahi, H. Horikawa, K. Onodera, J. Ventilation changes in the western North Pacific since the last glacial period |
author_facet |
Okazaki, Y. Sagawa, T. Asahi, H. Horikawa, K. Onodera, J. |
author_sort |
Okazaki, Y. |
title |
Ventilation changes in the western North Pacific since the last glacial period |
title_short |
Ventilation changes in the western North Pacific since the last glacial period |
title_full |
Ventilation changes in the western North Pacific since the last glacial period |
title_fullStr |
Ventilation changes in the western North Pacific since the last glacial period |
title_full_unstemmed |
Ventilation changes in the western North Pacific since the last glacial period |
title_sort |
ventilation changes in the western north pacific since the last glacial period |
publisher |
Copernicus Gesellschaft Mbh |
publishDate |
2012 |
url |
https://archimer.ifremer.fr/doc/00274/38497/36964.pdf https://doi.org/10.5194/cp-8-17-2012 https://archimer.ifremer.fr/doc/00274/38497/ |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Climate Of The Past (1814-9324) (Copernicus Gesellschaft Mbh), 2012 , Vol. 8 , N. 1 , P. 17-24 |
op_relation |
https://archimer.ifremer.fr/doc/00274/38497/36964.pdf doi:10.5194/cp-8-17-2012 https://archimer.ifremer.fr/doc/00274/38497/ |
op_rights |
Author(s) 2012. This work is distributed under the Creative Commons Attribution 3.0 License. info:eu-repo/semantics/openAccess restricted use |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/cp-8-17-2012 |
container_title |
Climate of the Past |
container_volume |
8 |
container_issue |
1 |
container_start_page |
17 |
op_container_end_page |
24 |
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1766132396759973888 |