Differentiating Lithogenic Supplies, Water Mass Transport, and Biological Processes On and Off the Kerguelen Plateau Using Rare Earth Element Concentrations and Neodymium Isotopic Compositions
International audience Distributions of dissolved rare earth element (REE) concentrations and neodymium isotopic compositions (expressed as εNd) of seawater over and off the Kerguelen Plateau in the Southern Ocean are presented. The sampling took place during the austral spring bloom in October–Nove...
Published in: | Frontiers in Marine Science |
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Main Authors: | , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2018
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Subjects: | |
Online Access: | https://hal.science/hal-02410112 https://hal.science/hal-02410112/document https://hal.science/hal-02410112/file/Grenier_etal_Fmars_2018.pdf https://doi.org/10.3389/fmars.2018.00426 |
id |
ftunivnantes:oai:HAL:hal-02410112v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Southern Ocean Kerguelen Islands rare earth elements fractionation anomalies lithogenic biologic GEOTRACES ACL [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
Southern Ocean Kerguelen Islands rare earth elements fractionation anomalies lithogenic biologic GEOTRACES ACL [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.BE]Environmental Sciences/Biodiversity and Ecology Grenier, Melanie Garcia-Solsona, Ester Lemaitre, Nolwenn Trull, Thomas Bouvier, Vincent Nonnotte, Philippe van Beek, Pieter Souhaut, Marc Lacan, François Jeandel, Catherine Differentiating Lithogenic Supplies, Water Mass Transport, and Biological Processes On and Off the Kerguelen Plateau Using Rare Earth Element Concentrations and Neodymium Isotopic Compositions |
topic_facet |
Southern Ocean Kerguelen Islands rare earth elements fractionation anomalies lithogenic biologic GEOTRACES ACL [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience Distributions of dissolved rare earth element (REE) concentrations and neodymium isotopic compositions (expressed as εNd) of seawater over and off the Kerguelen Plateau in the Southern Ocean are presented. The sampling took place during the austral spring bloom in October–November 2011 (KEOPS2 project, GEOTRACES process study) and aimed to further the investigations of the KEOPS1 austral summer study in terms of sources and transport of lithogenic material, and to investigate the impact of local biogeochemical cycles on the REE distributions. The REE signature of the coastal eastern Kerguelen Islands waters was characterized by negative europium anomalies (Eu/Eu*) and negative εNd in filtered samples. By contrast, the unfiltered sample showed a positive Eu/Eu* and more radiogenic εNd. These distinct signatures could reflect either differential dissolution of the local flood basalt minerals or differential leaching of local trachyte veins. The dissolved Kerguelen coastal REE patterns differ from those observed close to Heard Island, these latter featuring a positive Eu/Eu* and a less radiogenic εNd (Zhang et al., 2008). These differences enabled us to trace the transport of waters (tagged by the Kerguelen REE signature) 200 km downstream from the coastal area, north of the Polar Front. Northward transport of the central Plateau shallow waters, enriched by both local vertical supplies and lateral advection of inputs from Heard Island, was also evident. However, the transport of Kerguelen inputs southeastward across the Polar Front could not be discerned (possibly as a result of rapid dilution or scavenging of REE signatures), although evidence for such transport was found previously using Ra isotopes (Sanial et al., 2015). Comparison of the REE patterns at stations sampled prior, during and at the demise of the bloom revealed diverse fractionations, including production of significant lanthanum and europium anomalies, which are tentatively ascribed to chemical reactions with various ... |
author2 |
Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-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)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) Antarctic Climate and Ecosystems Cooperative Research Centre (ACE-CRC) Institut de Ciencia i Tecnologia Ambientals (ICTA) Universitat Autònoma de Barcelona (UAB) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) CSIRO Marine and Atmosphere Research Hobart Commonwealth Scientific and Industrial Research Organisation Canberra (CSIRO) Laboratoire Géosciences Océan (LGO) Université de Bretagne Sud (UBS)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) ANR-10-BLAN-0614,KEOPS 2,Kerguelen : Comparaison plateau Ocean2(2010) European Project: 657853,H2020,H2020-MSCA-IF-2014,GCP-GEOTARCTIC(2015) |
format |
Article in Journal/Newspaper |
author |
Grenier, Melanie Garcia-Solsona, Ester Lemaitre, Nolwenn Trull, Thomas Bouvier, Vincent Nonnotte, Philippe van Beek, Pieter Souhaut, Marc Lacan, François Jeandel, Catherine |
author_facet |
Grenier, Melanie Garcia-Solsona, Ester Lemaitre, Nolwenn Trull, Thomas Bouvier, Vincent Nonnotte, Philippe van Beek, Pieter Souhaut, Marc Lacan, François Jeandel, Catherine |
author_sort |
Grenier, Melanie |
title |
Differentiating Lithogenic Supplies, Water Mass Transport, and Biological Processes On and Off the Kerguelen Plateau Using Rare Earth Element Concentrations and Neodymium Isotopic Compositions |
title_short |
Differentiating Lithogenic Supplies, Water Mass Transport, and Biological Processes On and Off the Kerguelen Plateau Using Rare Earth Element Concentrations and Neodymium Isotopic Compositions |
title_full |
Differentiating Lithogenic Supplies, Water Mass Transport, and Biological Processes On and Off the Kerguelen Plateau Using Rare Earth Element Concentrations and Neodymium Isotopic Compositions |
title_fullStr |
Differentiating Lithogenic Supplies, Water Mass Transport, and Biological Processes On and Off the Kerguelen Plateau Using Rare Earth Element Concentrations and Neodymium Isotopic Compositions |
title_full_unstemmed |
Differentiating Lithogenic Supplies, Water Mass Transport, and Biological Processes On and Off the Kerguelen Plateau Using Rare Earth Element Concentrations and Neodymium Isotopic Compositions |
title_sort |
differentiating lithogenic supplies, water mass transport, and biological processes on and off the kerguelen plateau using rare earth element concentrations and neodymium isotopic compositions |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.science/hal-02410112 https://hal.science/hal-02410112/document https://hal.science/hal-02410112/file/Grenier_etal_Fmars_2018.pdf https://doi.org/10.3389/fmars.2018.00426 |
geographic |
Austral Heard Island Kerguelen Kerguelen Islands Southern Ocean |
geographic_facet |
Austral Heard Island Kerguelen Kerguelen Islands Southern Ocean |
genre |
Arctic Heard Island Kerguelen Islands Southern Ocean |
genre_facet |
Arctic Heard Island Kerguelen Islands Southern Ocean |
op_source |
ISSN: 2296-7745 Frontiers in Marine Science https://hal.science/hal-02410112 Frontiers in Marine Science, 2018, 5, pp.UNSP 426. ⟨10.3389/fmars.2018.00426⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2018.00426 info:eu-repo/grantAgreement//657853/EU/Geochemical-physical coupled study of the modern Arctic Ocean: GEOTRACES-ARCTIC/GCP-GEOTARCTIC hal-02410112 https://hal.science/hal-02410112 https://hal.science/hal-02410112/document https://hal.science/hal-02410112/file/Grenier_etal_Fmars_2018.pdf doi:10.3389/fmars.2018.00426 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3389/fmars.2018.00426 |
container_title |
Frontiers in Marine Science |
container_volume |
5 |
_version_ |
1766296006511558656 |
spelling |
ftunivnantes:oai:HAL:hal-02410112v1 2023-05-15T14:23:28+02:00 Differentiating Lithogenic Supplies, Water Mass Transport, and Biological Processes On and Off the Kerguelen Plateau Using Rare Earth Element Concentrations and Neodymium Isotopic Compositions Grenier, Melanie Garcia-Solsona, Ester Lemaitre, Nolwenn Trull, Thomas Bouvier, Vincent Nonnotte, Philippe van Beek, Pieter Souhaut, Marc Lacan, François Jeandel, Catherine Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-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)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) Antarctic Climate and Ecosystems Cooperative Research Centre (ACE-CRC) Institut de Ciencia i Tecnologia Ambientals (ICTA) Universitat Autònoma de Barcelona (UAB) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) CSIRO Marine and Atmosphere Research Hobart Commonwealth Scientific and Industrial Research Organisation Canberra (CSIRO) Laboratoire Géosciences Océan (LGO) Université de Bretagne Sud (UBS)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) ANR-10-BLAN-0614,KEOPS 2,Kerguelen : Comparaison plateau Ocean2(2010) European Project: 657853,H2020,H2020-MSCA-IF-2014,GCP-GEOTARCTIC(2015) 2018-11-20 https://hal.science/hal-02410112 https://hal.science/hal-02410112/document https://hal.science/hal-02410112/file/Grenier_etal_Fmars_2018.pdf https://doi.org/10.3389/fmars.2018.00426 en eng HAL CCSD Frontiers Media info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2018.00426 info:eu-repo/grantAgreement//657853/EU/Geochemical-physical coupled study of the modern Arctic Ocean: GEOTRACES-ARCTIC/GCP-GEOTARCTIC hal-02410112 https://hal.science/hal-02410112 https://hal.science/hal-02410112/document https://hal.science/hal-02410112/file/Grenier_etal_Fmars_2018.pdf doi:10.3389/fmars.2018.00426 info:eu-repo/semantics/OpenAccess ISSN: 2296-7745 Frontiers in Marine Science https://hal.science/hal-02410112 Frontiers in Marine Science, 2018, 5, pp.UNSP 426. ⟨10.3389/fmars.2018.00426⟩ Southern Ocean Kerguelen Islands rare earth elements fractionation anomalies lithogenic biologic GEOTRACES ACL [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2018 ftunivnantes https://doi.org/10.3389/fmars.2018.00426 2023-02-22T06:47:35Z International audience Distributions of dissolved rare earth element (REE) concentrations and neodymium isotopic compositions (expressed as εNd) of seawater over and off the Kerguelen Plateau in the Southern Ocean are presented. The sampling took place during the austral spring bloom in October–November 2011 (KEOPS2 project, GEOTRACES process study) and aimed to further the investigations of the KEOPS1 austral summer study in terms of sources and transport of lithogenic material, and to investigate the impact of local biogeochemical cycles on the REE distributions. The REE signature of the coastal eastern Kerguelen Islands waters was characterized by negative europium anomalies (Eu/Eu*) and negative εNd in filtered samples. By contrast, the unfiltered sample showed a positive Eu/Eu* and more radiogenic εNd. These distinct signatures could reflect either differential dissolution of the local flood basalt minerals or differential leaching of local trachyte veins. The dissolved Kerguelen coastal REE patterns differ from those observed close to Heard Island, these latter featuring a positive Eu/Eu* and a less radiogenic εNd (Zhang et al., 2008). These differences enabled us to trace the transport of waters (tagged by the Kerguelen REE signature) 200 km downstream from the coastal area, north of the Polar Front. Northward transport of the central Plateau shallow waters, enriched by both local vertical supplies and lateral advection of inputs from Heard Island, was also evident. However, the transport of Kerguelen inputs southeastward across the Polar Front could not be discerned (possibly as a result of rapid dilution or scavenging of REE signatures), although evidence for such transport was found previously using Ra isotopes (Sanial et al., 2015). Comparison of the REE patterns at stations sampled prior, during and at the demise of the bloom revealed diverse fractionations, including production of significant lanthanum and europium anomalies, which are tentatively ascribed to chemical reactions with various ... Article in Journal/Newspaper Arctic Heard Island Kerguelen Islands Southern Ocean Université de Nantes: HAL-UNIV-NANTES Austral Heard Island Kerguelen Kerguelen Islands Southern Ocean Frontiers in Marine Science 5 |