Seasonal Variations in the Siliciclastic Fluxes to the Western Philippine Sea and Their Impacts on Seawater ɛ Nd Values Inferred From 1 Year of In Situ Observations Above Benham Rise
International audience The Sr and Nd isotopic compositions of siliciclastic sediments and the Nd isotopic compositions of planktonic foraminifera are investigated in sediment trap samples collected in 2015 at water depths of 500 and 2,800 m to (1) track the seasonal changes in the sources and transp...
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Online Access: | https://insu.hal.science/insu-03745258 https://insu.hal.science/insu-03745258/document https://insu.hal.science/insu-03745258/file/JGR%20Oceans%20-%202018%20-%20Xu%20-%20Seasonal%20Variations%20in%20the%20Siliciclastic%20Fluxes%20to%20the%20Western%20Philippine%20Sea%20and%20Their%20Impacts%20on.pdf https://doi.org/10.1029/2018JC014274 |
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ftuniparissaclay:oai:HAL:insu-03745258v1 2024-09-15T18:30:51+00:00 Seasonal Variations in the Siliciclastic Fluxes to the Western Philippine Sea and Their Impacts on Seawater ɛ Nd Values Inferred From 1 Year of In Situ Observations Above Benham Rise Xu, Zhaokai Li, Tiegang Colin, Christophe Clift, Peter D. Sun, Rongtao Yu, Zhaojie Wan, Shiming Lim, Dhongil Chinese Academy of Sciences Beijing (CAS) Qingdao National Laboratory for Marine Science and Technology Géosciences Paris Sud (GEOPS) Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) Louisiana State University (LSU) Shandong University of Science and Technology Korea Institute of Ocean Science and Technology (KIOST) 2018-09 https://insu.hal.science/insu-03745258 https://insu.hal.science/insu-03745258/document https://insu.hal.science/insu-03745258/file/JGR%20Oceans%20-%202018%20-%20Xu%20-%20Seasonal%20Variations%20in%20the%20Siliciclastic%20Fluxes%20to%20the%20Western%20Philippine%20Sea%20and%20Their%20Impacts%20on.pdf https://doi.org/10.1029/2018JC014274 en eng HAL CCSD Wiley-Blackwell info:eu-repo/semantics/altIdentifier/doi/10.1029/2018JC014274 insu-03745258 https://insu.hal.science/insu-03745258 https://insu.hal.science/insu-03745258/document https://insu.hal.science/insu-03745258/file/JGR%20Oceans%20-%202018%20-%20Xu%20-%20Seasonal%20Variations%20in%20the%20Siliciclastic%20Fluxes%20to%20the%20Western%20Philippine%20Sea%20and%20Their%20Impacts%20on.pdf BIBCODE: 2018JGRC.123.6688X doi:10.1029/2018JC014274 http://creativecommons.org/licenses/by-nc-nd/ info:eu-repo/semantics/OpenAccess ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://insu.hal.science/insu-03745258 Journal of Geophysical Research. Oceans, 2018, 123 (9), pp.6688-6702. ⟨10.1029/2018JC014274⟩ Sr and Nd isotopes mooring system western Philippine Sea foraminifera dust sources East Asian monsoon [SDU]Sciences of the Universe [physics] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2018 ftuniparissaclay https://doi.org/10.1029/2018JC014274 2024-08-30T01:48:53Z International audience The Sr and Nd isotopic compositions of siliciclastic sediments and the Nd isotopic compositions of planktonic foraminifera are investigated in sediment trap samples collected in 2015 at water depths of 500 and 2,800 m to (1) track the seasonal changes in the sources and transport patterns of siliciclastic sediments to Benham Rise, (2) constrain the Nd isotopic compositions of the planktonic foraminifera throughout the water column, and (3) assess the influences of lithogenic inputs on the Nd isotopic compositions of the water masses. We demonstrate that volcanic matter and eolian dust are derived primarily from Luzon Island and the Ordos Desert, respectively. In addition, we show that reduced precipitation over Luzon Island and the weakened East Asian winter monsoon intensity result in mass fluxes from Luzon Island and the eastern Asian deserts to the sea, respectively, that are weaker in the winter than in the spring. Furthermore, the ɛ Nd values of the foraminifera collected at a water depth of 500 m change slightly in 2015, suggesting negligible impacts of lithogenic Nd inputs characterized by significant seasonal flux variations. In contrast, the ɛ Nd values of the planktonic foraminifera collected at a water depth of 2,800 m are systematically more radiogenic and appear to display seasonal variability. Such results suggest the rapid modification of ɛ Nd values during the settling of planktonic foraminifera by the precipitation of Mn coatings derived from water masses at deposition depths, with greater contributions of colder water masses originating from the volcanic Luzon Island margin during the winter. Article in Journal/Newspaper Planktonic foraminifera Archives ouvertes de Paris-Saclay Journal of Geophysical Research: Oceans 123 9 6688 6702 |
institution |
Open Polar |
collection |
Archives ouvertes de Paris-Saclay |
op_collection_id |
ftuniparissaclay |
language |
English |
topic |
Sr and Nd isotopes mooring system western Philippine Sea foraminifera dust sources East Asian monsoon [SDU]Sciences of the Universe [physics] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
Sr and Nd isotopes mooring system western Philippine Sea foraminifera dust sources East Asian monsoon [SDU]Sciences of the Universe [physics] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Xu, Zhaokai Li, Tiegang Colin, Christophe Clift, Peter D. Sun, Rongtao Yu, Zhaojie Wan, Shiming Lim, Dhongil Seasonal Variations in the Siliciclastic Fluxes to the Western Philippine Sea and Their Impacts on Seawater ɛ Nd Values Inferred From 1 Year of In Situ Observations Above Benham Rise |
topic_facet |
Sr and Nd isotopes mooring system western Philippine Sea foraminifera dust sources East Asian monsoon [SDU]Sciences of the Universe [physics] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience The Sr and Nd isotopic compositions of siliciclastic sediments and the Nd isotopic compositions of planktonic foraminifera are investigated in sediment trap samples collected in 2015 at water depths of 500 and 2,800 m to (1) track the seasonal changes in the sources and transport patterns of siliciclastic sediments to Benham Rise, (2) constrain the Nd isotopic compositions of the planktonic foraminifera throughout the water column, and (3) assess the influences of lithogenic inputs on the Nd isotopic compositions of the water masses. We demonstrate that volcanic matter and eolian dust are derived primarily from Luzon Island and the Ordos Desert, respectively. In addition, we show that reduced precipitation over Luzon Island and the weakened East Asian winter monsoon intensity result in mass fluxes from Luzon Island and the eastern Asian deserts to the sea, respectively, that are weaker in the winter than in the spring. Furthermore, the ɛ Nd values of the foraminifera collected at a water depth of 500 m change slightly in 2015, suggesting negligible impacts of lithogenic Nd inputs characterized by significant seasonal flux variations. In contrast, the ɛ Nd values of the planktonic foraminifera collected at a water depth of 2,800 m are systematically more radiogenic and appear to display seasonal variability. Such results suggest the rapid modification of ɛ Nd values during the settling of planktonic foraminifera by the precipitation of Mn coatings derived from water masses at deposition depths, with greater contributions of colder water masses originating from the volcanic Luzon Island margin during the winter. |
author2 |
Chinese Academy of Sciences Beijing (CAS) Qingdao National Laboratory for Marine Science and Technology Géosciences Paris Sud (GEOPS) Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) Louisiana State University (LSU) Shandong University of Science and Technology Korea Institute of Ocean Science and Technology (KIOST) |
format |
Article in Journal/Newspaper |
author |
Xu, Zhaokai Li, Tiegang Colin, Christophe Clift, Peter D. Sun, Rongtao Yu, Zhaojie Wan, Shiming Lim, Dhongil |
author_facet |
Xu, Zhaokai Li, Tiegang Colin, Christophe Clift, Peter D. Sun, Rongtao Yu, Zhaojie Wan, Shiming Lim, Dhongil |
author_sort |
Xu, Zhaokai |
title |
Seasonal Variations in the Siliciclastic Fluxes to the Western Philippine Sea and Their Impacts on Seawater ɛ Nd Values Inferred From 1 Year of In Situ Observations Above Benham Rise |
title_short |
Seasonal Variations in the Siliciclastic Fluxes to the Western Philippine Sea and Their Impacts on Seawater ɛ Nd Values Inferred From 1 Year of In Situ Observations Above Benham Rise |
title_full |
Seasonal Variations in the Siliciclastic Fluxes to the Western Philippine Sea and Their Impacts on Seawater ɛ Nd Values Inferred From 1 Year of In Situ Observations Above Benham Rise |
title_fullStr |
Seasonal Variations in the Siliciclastic Fluxes to the Western Philippine Sea and Their Impacts on Seawater ɛ Nd Values Inferred From 1 Year of In Situ Observations Above Benham Rise |
title_full_unstemmed |
Seasonal Variations in the Siliciclastic Fluxes to the Western Philippine Sea and Their Impacts on Seawater ɛ Nd Values Inferred From 1 Year of In Situ Observations Above Benham Rise |
title_sort |
seasonal variations in the siliciclastic fluxes to the western philippine sea and their impacts on seawater ɛ nd values inferred from 1 year of in situ observations above benham rise |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://insu.hal.science/insu-03745258 https://insu.hal.science/insu-03745258/document https://insu.hal.science/insu-03745258/file/JGR%20Oceans%20-%202018%20-%20Xu%20-%20Seasonal%20Variations%20in%20the%20Siliciclastic%20Fluxes%20to%20the%20Western%20Philippine%20Sea%20and%20Their%20Impacts%20on.pdf https://doi.org/10.1029/2018JC014274 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://insu.hal.science/insu-03745258 Journal of Geophysical Research. Oceans, 2018, 123 (9), pp.6688-6702. ⟨10.1029/2018JC014274⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2018JC014274 insu-03745258 https://insu.hal.science/insu-03745258 https://insu.hal.science/insu-03745258/document https://insu.hal.science/insu-03745258/file/JGR%20Oceans%20-%202018%20-%20Xu%20-%20Seasonal%20Variations%20in%20the%20Siliciclastic%20Fluxes%20to%20the%20Western%20Philippine%20Sea%20and%20Their%20Impacts%20on.pdf BIBCODE: 2018JGRC.123.6688X doi:10.1029/2018JC014274 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2018JC014274 |
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Journal of Geophysical Research: Oceans |
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9 |
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6688 |
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