Hydrological variations of the intermediate water masses of the western Mediterranean Sea during the past 20 ka inferred from neodymium isotopic composition in foraminifera and cold-water corals
International audience We present the neodymium isotopic composition (εNd) of mixed planktonic foraminifera species from a sediment core collected at 622 m water depth in the Balearic Sea, as well as εNd of scleractinian cold-water corals (CWC; Madrepora oculata, Lophelia pertusa) retrieved between...
Published in: | Climate of the Past |
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Main Authors: | , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2017
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Online Access: | https://hal.science/hal-01485283 https://hal.science/hal-01485283/document https://hal.science/hal-01485283/file/cp-13-17-2017.pdf https://doi.org/10.5194/cp-13-17-2017 |
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ftceafr:oai:HAL:hal-01485283v1 |
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openpolar |
institution |
Open Polar |
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HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
language |
English |
topic |
Panoply [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
Panoply [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Dubois-Dauphin, Quentin Montagna, Paolo Siani, Giuseppe Douville, Eric Wienberg, Claudia Hebbeln, Dierk Liu, Zhifei Kallel, Nejib Dapoigny, Arnaud Revel, Marie Pons-Branchu, Edwige Taviani, Marco Colin, Christophe Hydrological variations of the intermediate water masses of the western Mediterranean Sea during the past 20 ka inferred from neodymium isotopic composition in foraminifera and cold-water corals |
topic_facet |
Panoply [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience We present the neodymium isotopic composition (εNd) of mixed planktonic foraminifera species from a sediment core collected at 622 m water depth in the Balearic Sea, as well as εNd of scleractinian cold-water corals (CWC; Madrepora oculata, Lophelia pertusa) retrieved between 280 and 442 m water depth in the Alboran Sea and at 414 m depth in the South Sardinian continental margin. The aim is to constrain hydrological variations at intermediate depths in the western Mediterranean Sea during the last 20 kyr. Planktonic (Globigerina bulloides) and benthic (Cibicidoides pachyderma) foraminifera from the Balearic Sea were also analyzed for stable oxygen (δ 18O) and carbon (δ 13 C) isotopes. The foraminiferal and coral εNd values from the Balearic and Alboran Sea are comparable over the last ~13 kyr, with mean values of -8.94±0.26 (1σ; n=24) and - 8.91±0.18 (1σ; n=25), respectively. Before 13 ka BP, the foraminiferal εNd values are slightly lower (- 9.28±0.15) and tend to reflect higher mixing between intermediate and deep waters, which are characterized by more unradiogenic εNd values. The slight εNd increase after 13 ka BP is associated to a decoupling in the benthic foraminiferal δ 13C composition between intermediate and deeper depths, which started at ~16 ka BP. This suggests an earlier stratification of the water masses and a subsequent reduced contribution of unradiogenic εNd from deep waters. The CWC from the Sardinia Channel show a much larger scatter of εNd values, from - 8.66±0.30 to -5.99±0.50, and a lower average (-7.31±0.73; n=19) compared to the CWC and foraminifera from the Alboran and Balearic Sea, indicative of intermediate waters sourced from the Levantine basin. At the time of sapropel S1 deposition (10.2 to 6.4 ka), the εNd values of the Sardinian CWC become more unradiogenic (- 8.38±0.47; n=3 at ~8.7 ka BP), suggesting a significant contribution of intermediate waters originated from the western basin. We propose that western Mediterranean intermediate waters replaced the ... |
author2 |
Géosciences Paris Sud (GEOPS) Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) Istituto di Scienze Marine Bologna (ISMAR) Istituto di Science Marine (ISMAR ) National Research Council of Italy 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)) Center for Marine Environmental Sciences Bremen (MARUM) Universität Bremen State Key Laboratory of Marine Geology Shanghai Tongji University Unité GEOGLOB Faculté des Sciences de Sfax (FSS) Université de Sfax - University of Sfax-Université de Sfax - University of Sfax Institut Pierre-Simon-Laplace (IPSL) 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)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS) Géoazur (GEOAZUR 7329) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur Université Côte d'Azur (UniCA)-Université Côte d'Azur (UniCA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud ) ANR-10-LABX-0018,L-IPSL,LabEx Institut Pierre Simon Laplace (IPSL): Understand climate and anticipate future changes(2010) |
format |
Article in Journal/Newspaper |
author |
Dubois-Dauphin, Quentin Montagna, Paolo Siani, Giuseppe Douville, Eric Wienberg, Claudia Hebbeln, Dierk Liu, Zhifei Kallel, Nejib Dapoigny, Arnaud Revel, Marie Pons-Branchu, Edwige Taviani, Marco Colin, Christophe |
author_facet |
Dubois-Dauphin, Quentin Montagna, Paolo Siani, Giuseppe Douville, Eric Wienberg, Claudia Hebbeln, Dierk Liu, Zhifei Kallel, Nejib Dapoigny, Arnaud Revel, Marie Pons-Branchu, Edwige Taviani, Marco Colin, Christophe |
author_sort |
Dubois-Dauphin, Quentin |
title |
Hydrological variations of the intermediate water masses of the western Mediterranean Sea during the past 20 ka inferred from neodymium isotopic composition in foraminifera and cold-water corals |
title_short |
Hydrological variations of the intermediate water masses of the western Mediterranean Sea during the past 20 ka inferred from neodymium isotopic composition in foraminifera and cold-water corals |
title_full |
Hydrological variations of the intermediate water masses of the western Mediterranean Sea during the past 20 ka inferred from neodymium isotopic composition in foraminifera and cold-water corals |
title_fullStr |
Hydrological variations of the intermediate water masses of the western Mediterranean Sea during the past 20 ka inferred from neodymium isotopic composition in foraminifera and cold-water corals |
title_full_unstemmed |
Hydrological variations of the intermediate water masses of the western Mediterranean Sea during the past 20 ka inferred from neodymium isotopic composition in foraminifera and cold-water corals |
title_sort |
hydrological variations of the intermediate water masses of the western mediterranean sea during the past 20 ka inferred from neodymium isotopic composition in foraminifera and cold-water corals |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.science/hal-01485283 https://hal.science/hal-01485283/document https://hal.science/hal-01485283/file/cp-13-17-2017.pdf https://doi.org/10.5194/cp-13-17-2017 |
geographic |
Western Basin |
geographic_facet |
Western Basin |
genre |
Lophelia pertusa Planktonic foraminifera |
genre_facet |
Lophelia pertusa Planktonic foraminifera |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-01485283 Climate of the Past, 2017, 13 (1), pp.17-37. ⟨10.5194/cp-13-17-2017⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-13-17-2017 hal-01485283 https://hal.science/hal-01485283 https://hal.science/hal-01485283/document https://hal.science/hal-01485283/file/cp-13-17-2017.pdf doi:10.5194/cp-13-17-2017 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/cp-13-17-2017 |
container_title |
Climate of the Past |
container_volume |
13 |
container_issue |
1 |
container_start_page |
17 |
op_container_end_page |
37 |
_version_ |
1801378814753767424 |
spelling |
ftceafr:oai:HAL:hal-01485283v1 2024-06-09T07:47:36+00:00 Hydrological variations of the intermediate water masses of the western Mediterranean Sea during the past 20 ka inferred from neodymium isotopic composition in foraminifera and cold-water corals Dubois-Dauphin, Quentin Montagna, Paolo Siani, Giuseppe Douville, Eric Wienberg, Claudia Hebbeln, Dierk Liu, Zhifei Kallel, Nejib Dapoigny, Arnaud Revel, Marie Pons-Branchu, Edwige Taviani, Marco Colin, Christophe Géosciences Paris Sud (GEOPS) Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) Istituto di Scienze Marine Bologna (ISMAR) Istituto di Science Marine (ISMAR ) National Research Council of Italy 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)) Center for Marine Environmental Sciences Bremen (MARUM) Universität Bremen State Key Laboratory of Marine Geology Shanghai Tongji University Unité GEOGLOB Faculté des Sciences de Sfax (FSS) Université de Sfax - University of Sfax-Université de Sfax - University of Sfax Institut Pierre-Simon-Laplace (IPSL) 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)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS) Géoazur (GEOAZUR 7329) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur Université Côte d'Azur (UniCA)-Université Côte d'Azur (UniCA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud ) ANR-10-LABX-0018,L-IPSL,LabEx Institut Pierre Simon Laplace (IPSL): Understand climate and anticipate future changes(2010) 2017 https://hal.science/hal-01485283 https://hal.science/hal-01485283/document https://hal.science/hal-01485283/file/cp-13-17-2017.pdf https://doi.org/10.5194/cp-13-17-2017 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-13-17-2017 hal-01485283 https://hal.science/hal-01485283 https://hal.science/hal-01485283/document https://hal.science/hal-01485283/file/cp-13-17-2017.pdf doi:10.5194/cp-13-17-2017 info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-01485283 Climate of the Past, 2017, 13 (1), pp.17-37. ⟨10.5194/cp-13-17-2017⟩ Panoply [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2017 ftceafr https://doi.org/10.5194/cp-13-17-2017 2024-05-16T15:30:21Z International audience We present the neodymium isotopic composition (εNd) of mixed planktonic foraminifera species from a sediment core collected at 622 m water depth in the Balearic Sea, as well as εNd of scleractinian cold-water corals (CWC; Madrepora oculata, Lophelia pertusa) retrieved between 280 and 442 m water depth in the Alboran Sea and at 414 m depth in the South Sardinian continental margin. The aim is to constrain hydrological variations at intermediate depths in the western Mediterranean Sea during the last 20 kyr. Planktonic (Globigerina bulloides) and benthic (Cibicidoides pachyderma) foraminifera from the Balearic Sea were also analyzed for stable oxygen (δ 18O) and carbon (δ 13 C) isotopes. The foraminiferal and coral εNd values from the Balearic and Alboran Sea are comparable over the last ~13 kyr, with mean values of -8.94±0.26 (1σ; n=24) and - 8.91±0.18 (1σ; n=25), respectively. Before 13 ka BP, the foraminiferal εNd values are slightly lower (- 9.28±0.15) and tend to reflect higher mixing between intermediate and deep waters, which are characterized by more unradiogenic εNd values. The slight εNd increase after 13 ka BP is associated to a decoupling in the benthic foraminiferal δ 13C composition between intermediate and deeper depths, which started at ~16 ka BP. This suggests an earlier stratification of the water masses and a subsequent reduced contribution of unradiogenic εNd from deep waters. The CWC from the Sardinia Channel show a much larger scatter of εNd values, from - 8.66±0.30 to -5.99±0.50, and a lower average (-7.31±0.73; n=19) compared to the CWC and foraminifera from the Alboran and Balearic Sea, indicative of intermediate waters sourced from the Levantine basin. At the time of sapropel S1 deposition (10.2 to 6.4 ka), the εNd values of the Sardinian CWC become more unradiogenic (- 8.38±0.47; n=3 at ~8.7 ka BP), suggesting a significant contribution of intermediate waters originated from the western basin. We propose that western Mediterranean intermediate waters replaced the ... Article in Journal/Newspaper Lophelia pertusa Planktonic foraminifera HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Western Basin Climate of the Past 13 1 17 37 |