Antarctic Intermediate Water penetration into the Northern Indian Ocean during the last deglaciation
International audience The two-stage increase in atmospheric carbon dioxide (CO2), and the associated decrease in radiocarbon (14C) during the last deglaciation, are thought to have been linked to enhanced Southern Ocean upwelling and the rapid release of sequestered 14C-depleted CO2. Antarctic Inte...
Published in: | Earth and Planetary Science Letters |
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Main Authors: | , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2018
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Online Access: | https://hal.science/hal-01897030 https://doi.org/10.1016/j.epsl.2018.08.006 |
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Panoply [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
Panoply [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Yu, Zhaojie Colin, Christophe Ma, Ruifang Meynadier, Laure Wan, Shiming Wu, Qiong Kallel, Nejib Sepulcre, Sophie Dapoigny, Arnaud Bassinot, Frank Antarctic Intermediate Water penetration into the Northern Indian Ocean during the last deglaciation |
topic_facet |
Panoply [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience The two-stage increase in atmospheric carbon dioxide (CO2), and the associated decrease in radiocarbon (14C) during the last deglaciation, are thought to have been linked to enhanced Southern Ocean upwelling and the rapid release of sequestered 14C-depleted CO2. Antarctic Intermediate Water (AAIW), originating from the Southern Ocean, reflects variations in the Southern Ocean and, crucially, mirrors the chemical signature of upwelling deep water. However, the penetration of AAIW into the Northern Indian Ocean and its relationship with deglacial climate changes have not been thoroughly elucidated to date. Here, we present the neodymium isotopic composition () of mixed planktonic foraminifera from core MD77-176 from an intermediate depth in the Northern Indian Ocean to reconstruct the past evolution of intermediate water during deglaciation. The record in the Northern Indian Ocean displays two pulse-like shifts towards more radiogenic Southern Ocean values during the deglaciation, and these shifts coincide with excursions in and records in the Pacific and Atlantic Oceans. These results suggest invasion of AAIW into the Northern Hemisphere oceans associated with enhanced Southern Ocean ventilation during deglaciation. Our new record strongly supports the close linkage of AAIW propagation and atmospheric CO2 rise through Southern Ocean ventilation during deglaciation. |
author2 |
Géosciences Paris Sud (GEOPS) Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) Key Laboratory of Marine Geology and Environment China Institute of Oceanology China Center for Ocean Mega-Science, Chinese Academy of Sciences, Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) College of Oceanography, Hohai University Unité GEOGLOB Faculté des Sciences de Sfax (FSS) Université de Sfax - University of Sfax-Université de Sfax - University of Sfax Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Géochrononologie Traceurs Archéométrie (GEOTRAC) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Paléocéanographie (PALEOCEAN) This work was supported by the National Natural Science Foundation of China (41622603 and 41576034), National Programme on Global Change and Air–Sea Interaction (GASI-GEOGE-03), Innovation Project (2016ASKJ13) and Aoshan Talents programme (2017ASTCP-ES01) of Qingdao National Laboratory for Marine Science and Technology and CAS Interdisciplinary Innovation Team, Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences (No. MGE2018KG01). Z. Yu acknowledges the China Scholarship Council for providing funding for his study in France. This study was supported by the Labex L-IPSL and the MONOPOL projects, which are funded by the ANR (grant nos. ANR-10-LABX-0018 and ANR 2011 Blanc SIMI 5-6 024 04) ANR-10-LABX-0018,L-IPSL,LabEx Institut Pierre Simon Laplace (IPSL): Understand climate and anticipate future changes(2010) ANR-11-BS56-0024,MONOPOL,Paléo-variabilité de la mousson indienne(2011) |
format |
Article in Journal/Newspaper |
author |
Yu, Zhaojie Colin, Christophe Ma, Ruifang Meynadier, Laure Wan, Shiming Wu, Qiong Kallel, Nejib Sepulcre, Sophie Dapoigny, Arnaud Bassinot, Frank |
author_facet |
Yu, Zhaojie Colin, Christophe Ma, Ruifang Meynadier, Laure Wan, Shiming Wu, Qiong Kallel, Nejib Sepulcre, Sophie Dapoigny, Arnaud Bassinot, Frank |
author_sort |
Yu, Zhaojie |
title |
Antarctic Intermediate Water penetration into the Northern Indian Ocean during the last deglaciation |
title_short |
Antarctic Intermediate Water penetration into the Northern Indian Ocean during the last deglaciation |
title_full |
Antarctic Intermediate Water penetration into the Northern Indian Ocean during the last deglaciation |
title_fullStr |
Antarctic Intermediate Water penetration into the Northern Indian Ocean during the last deglaciation |
title_full_unstemmed |
Antarctic Intermediate Water penetration into the Northern Indian Ocean during the last deglaciation |
title_sort |
antarctic intermediate water penetration into the northern indian ocean during the last deglaciation |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.science/hal-01897030 https://doi.org/10.1016/j.epsl.2018.08.006 |
genre |
Antarc* Antarctic Planktonic foraminifera Southern Ocean |
genre_facet |
Antarc* Antarctic Planktonic foraminifera Southern Ocean |
op_source |
ISSN: 0012-821X Earth and Planetary Science Letters https://hal.science/hal-01897030 Earth and Planetary Science Letters, 2018, 500, pp.67 - 75. ⟨10.1016/j.epsl.2018.08.006⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2018.08.006 hal-01897030 https://hal.science/hal-01897030 doi:10.1016/j.epsl.2018.08.006 |
op_doi |
https://doi.org/10.1016/j.epsl.2018.08.006 |
container_title |
Earth and Planetary Science Letters |
container_volume |
500 |
container_start_page |
67 |
op_container_end_page |
75 |
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1796935971234643968 |
spelling |
ftinsu:oai:HAL:hal-01897030v1 2024-04-21T07:52:46+00:00 Antarctic Intermediate Water penetration into the Northern Indian Ocean during the last deglaciation Yu, Zhaojie Colin, Christophe Ma, Ruifang Meynadier, Laure Wan, Shiming Wu, Qiong Kallel, Nejib Sepulcre, Sophie Dapoigny, Arnaud Bassinot, Frank Géosciences Paris Sud (GEOPS) Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) Key Laboratory of Marine Geology and Environment China Institute of Oceanology China Center for Ocean Mega-Science, Chinese Academy of Sciences, Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) College of Oceanography, Hohai University Unité GEOGLOB Faculté des Sciences de Sfax (FSS) Université de Sfax - University of Sfax-Université de Sfax - University of Sfax Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Géochrononologie Traceurs Archéométrie (GEOTRAC) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Paléocéanographie (PALEOCEAN) This work was supported by the National Natural Science Foundation of China (41622603 and 41576034), National Programme on Global Change and Air–Sea Interaction (GASI-GEOGE-03), Innovation Project (2016ASKJ13) and Aoshan Talents programme (2017ASTCP-ES01) of Qingdao National Laboratory for Marine Science and Technology and CAS Interdisciplinary Innovation Team, Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences (No. MGE2018KG01). Z. Yu acknowledges the China Scholarship Council for providing funding for his study in France. This study was supported by the Labex L-IPSL and the MONOPOL projects, which are funded by the ANR (grant nos. ANR-10-LABX-0018 and ANR 2011 Blanc SIMI 5-6 024 04) ANR-10-LABX-0018,L-IPSL,LabEx Institut Pierre Simon Laplace (IPSL): Understand climate and anticipate future changes(2010) ANR-11-BS56-0024,MONOPOL,Paléo-variabilité de la mousson indienne(2011) 2018-10 https://hal.science/hal-01897030 https://doi.org/10.1016/j.epsl.2018.08.006 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2018.08.006 hal-01897030 https://hal.science/hal-01897030 doi:10.1016/j.epsl.2018.08.006 ISSN: 0012-821X Earth and Planetary Science Letters https://hal.science/hal-01897030 Earth and Planetary Science Letters, 2018, 500, pp.67 - 75. ⟨10.1016/j.epsl.2018.08.006⟩ Panoply [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2018 ftinsu https://doi.org/10.1016/j.epsl.2018.08.006 2024-04-05T00:45:22Z International audience The two-stage increase in atmospheric carbon dioxide (CO2), and the associated decrease in radiocarbon (14C) during the last deglaciation, are thought to have been linked to enhanced Southern Ocean upwelling and the rapid release of sequestered 14C-depleted CO2. Antarctic Intermediate Water (AAIW), originating from the Southern Ocean, reflects variations in the Southern Ocean and, crucially, mirrors the chemical signature of upwelling deep water. However, the penetration of AAIW into the Northern Indian Ocean and its relationship with deglacial climate changes have not been thoroughly elucidated to date. Here, we present the neodymium isotopic composition () of mixed planktonic foraminifera from core MD77-176 from an intermediate depth in the Northern Indian Ocean to reconstruct the past evolution of intermediate water during deglaciation. The record in the Northern Indian Ocean displays two pulse-like shifts towards more radiogenic Southern Ocean values during the deglaciation, and these shifts coincide with excursions in and records in the Pacific and Atlantic Oceans. These results suggest invasion of AAIW into the Northern Hemisphere oceans associated with enhanced Southern Ocean ventilation during deglaciation. Our new record strongly supports the close linkage of AAIW propagation and atmospheric CO2 rise through Southern Ocean ventilation during deglaciation. Article in Journal/Newspaper Antarc* Antarctic Planktonic foraminifera Southern Ocean Institut national des sciences de l'Univers: HAL-INSU Earth and Planetary Science Letters 500 67 75 |