Nd isotopic composition of water masses and dilution of the Mediterranean outflow along South-West European margin
International audience Nd isotopic compositions (ɛNd) of seawater profiles and deep‐sea corals collected off the coast of Iberia and from the Bay of Biscay were measured (1) to constrain the Nd isotopic composition of water masses along the southwest European margin, (2) to track the Mediterranean O...
Published in: | Geochemistry, Geophysics, Geosystems |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2011
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Subjects: | |
Online Access: | https://hal.science/hal-00627329 https://hal.science/hal-00627329/document https://hal.science/hal-00627329/file/2011GC003529.pdf https://doi.org/10.1029/2011GC003529 |
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ftepunivpsaclay:oai:HAL:hal-00627329v1 |
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openpolar |
institution |
Open Polar |
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École Polytechnique, Université Paris-Saclay: HAL |
op_collection_id |
ftepunivpsaclay |
language |
English |
topic |
European margin Nd isotopic composition deep‐sea corals water masses [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
European margin Nd isotopic composition deep‐sea corals water masses [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Copard, Kevin Colin, Christophe Frank, Norbert Jeandel, Catherine Montero-Serrano, Jean-Carlos Reverdin, Gilles Ferron, Bruno Nd isotopic composition of water masses and dilution of the Mediterranean outflow along South-West European margin |
topic_facet |
European margin Nd isotopic composition deep‐sea corals water masses [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience Nd isotopic compositions (ɛNd) of seawater profiles and deep‐sea corals collected off the coast of Iberia and from the Bay of Biscay were measured (1) to constrain the Nd isotopic composition of water masses along the southwest European margin, (2) to track the Mediterranean Outflow Water (MOW) during its northward propagation, and (3) to establish hydrological changes during the last 1500 years. The Eastern North Atlantic Central Water (ENACW) is characterized by Nd isotopic composition of around −12.0. Mediterranean Sea Water (MSW) is collected from 800 and 1200 m depth and is characterized by ɛNd values ranging from −10.9, off the coast of Iberia, to −11.6 in the Bay of Biscay. These ɛNd results suggest a strong dilution of the pure MOW at the Strait of Gibraltar (ɛNd −9.4) of approximately 40% and 30% along its northward circulation pathway essentially with a contribution from ENACW. At around 2000 m depth, ɛNd water profiles display the occurrence of a nonradiogenic water mass (ɛNd −13), originating from the Labrador Sea (Labrador Sea Water). Fossil deep‐sea corals, dated between 84 and 1500 years, display Nd isotopic compositions that vary moderately from present‐day seawater values, suggesting a weaker influence of MOW in the formation of MSW during the Dark Ages and the Little Ice Age. These recent cold events seem to be associated with a reduction in the northward penetration of MSW, which may result from a greater eastward extension of the middepth subpolar gyre and/or a reduction of MSW formation, likely tied to a variation in deep Mediterranean water production. |
author2 |
Géosciences Paris Sud (GEOPS) Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) 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)) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Échanges dans la couche de surface : des pôles aux tropiques (SURF) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) ANR-06-BLAN-0146,NEWTON,NORTH-EST ATLANTIC WATER MASS GEOCHEMICAL TRACERS DURING THE PAST 60 YEARS AND BEYOND(2006) |
format |
Article in Journal/Newspaper |
author |
Copard, Kevin Colin, Christophe Frank, Norbert Jeandel, Catherine Montero-Serrano, Jean-Carlos Reverdin, Gilles Ferron, Bruno |
author_facet |
Copard, Kevin Colin, Christophe Frank, Norbert Jeandel, Catherine Montero-Serrano, Jean-Carlos Reverdin, Gilles Ferron, Bruno |
author_sort |
Copard, Kevin |
title |
Nd isotopic composition of water masses and dilution of the Mediterranean outflow along South-West European margin |
title_short |
Nd isotopic composition of water masses and dilution of the Mediterranean outflow along South-West European margin |
title_full |
Nd isotopic composition of water masses and dilution of the Mediterranean outflow along South-West European margin |
title_fullStr |
Nd isotopic composition of water masses and dilution of the Mediterranean outflow along South-West European margin |
title_full_unstemmed |
Nd isotopic composition of water masses and dilution of the Mediterranean outflow along South-West European margin |
title_sort |
nd isotopic composition of water masses and dilution of the mediterranean outflow along south-west european margin |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-00627329 https://hal.science/hal-00627329/document https://hal.science/hal-00627329/file/2011GC003529.pdf https://doi.org/10.1029/2011GC003529 |
genre |
Labrador Sea North Atlantic |
genre_facet |
Labrador Sea North Atlantic |
op_source |
ISSN: 1525-2027 EISSN: 1525-2027 Geochemistry, Geophysics, Geosystems https://hal.science/hal-00627329 Geochemistry, Geophysics, Geosystems, 2011, 12 (6), pp.Q06020. ⟨10.1029/2011GC003529⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2011GC003529 hal-00627329 https://hal.science/hal-00627329 https://hal.science/hal-00627329/document https://hal.science/hal-00627329/file/2011GC003529.pdf doi:10.1029/2011GC003529 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2011GC003529 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
12 |
container_issue |
6 |
container_start_page |
n/a |
op_container_end_page |
n/a |
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1801378644305641472 |
spelling |
ftepunivpsaclay:oai:HAL:hal-00627329v1 2024-06-09T07:47:31+00:00 Nd isotopic composition of water masses and dilution of the Mediterranean outflow along South-West European margin Copard, Kevin Colin, Christophe Frank, Norbert Jeandel, Catherine Montero-Serrano, Jean-Carlos Reverdin, Gilles Ferron, Bruno Géosciences Paris Sud (GEOPS) Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) 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)) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Échanges dans la couche de surface : des pôles aux tropiques (SURF) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) ANR-06-BLAN-0146,NEWTON,NORTH-EST ATLANTIC WATER MASS GEOCHEMICAL TRACERS DURING THE PAST 60 YEARS AND BEYOND(2006) 2011 https://hal.science/hal-00627329 https://hal.science/hal-00627329/document https://hal.science/hal-00627329/file/2011GC003529.pdf https://doi.org/10.1029/2011GC003529 en eng HAL CCSD AGU and the Geochemical Society info:eu-repo/semantics/altIdentifier/doi/10.1029/2011GC003529 hal-00627329 https://hal.science/hal-00627329 https://hal.science/hal-00627329/document https://hal.science/hal-00627329/file/2011GC003529.pdf doi:10.1029/2011GC003529 info:eu-repo/semantics/OpenAccess ISSN: 1525-2027 EISSN: 1525-2027 Geochemistry, Geophysics, Geosystems https://hal.science/hal-00627329 Geochemistry, Geophysics, Geosystems, 2011, 12 (6), pp.Q06020. ⟨10.1029/2011GC003529⟩ European margin Nd isotopic composition deep‐sea corals water masses [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2011 ftepunivpsaclay https://doi.org/10.1029/2011GC003529 2024-05-16T12:10:49Z International audience Nd isotopic compositions (ɛNd) of seawater profiles and deep‐sea corals collected off the coast of Iberia and from the Bay of Biscay were measured (1) to constrain the Nd isotopic composition of water masses along the southwest European margin, (2) to track the Mediterranean Outflow Water (MOW) during its northward propagation, and (3) to establish hydrological changes during the last 1500 years. The Eastern North Atlantic Central Water (ENACW) is characterized by Nd isotopic composition of around −12.0. Mediterranean Sea Water (MSW) is collected from 800 and 1200 m depth and is characterized by ɛNd values ranging from −10.9, off the coast of Iberia, to −11.6 in the Bay of Biscay. These ɛNd results suggest a strong dilution of the pure MOW at the Strait of Gibraltar (ɛNd −9.4) of approximately 40% and 30% along its northward circulation pathway essentially with a contribution from ENACW. At around 2000 m depth, ɛNd water profiles display the occurrence of a nonradiogenic water mass (ɛNd −13), originating from the Labrador Sea (Labrador Sea Water). Fossil deep‐sea corals, dated between 84 and 1500 years, display Nd isotopic compositions that vary moderately from present‐day seawater values, suggesting a weaker influence of MOW in the formation of MSW during the Dark Ages and the Little Ice Age. These recent cold events seem to be associated with a reduction in the northward penetration of MSW, which may result from a greater eastward extension of the middepth subpolar gyre and/or a reduction of MSW formation, likely tied to a variation in deep Mediterranean water production. Article in Journal/Newspaper Labrador Sea North Atlantic École Polytechnique, Université Paris-Saclay: HAL Geochemistry, Geophysics, Geosystems 12 6 n/a n/a |