The silicon stable isotope distribution along the GEOVIDE section (GEOTRACES GA-01) of the North Atlantic Ocean
WOS:000445272300001 International audience The stable isotope composition of dissolved silicon in seawater (delta Si-30(DSi)) was examined at 10 stations along the GEOVIDE section (GEOTRACES GA-01), spanning the North Atlantic Ocean (40-60 degrees N) and Labrador Sea. Variations in delta Si-30(DSi)...
Published in: | Biogeosciences |
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Main Authors: | , , , |
Other Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2018
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Subjects: | |
Online Access: | https://doi.org/10.5194/bg-15-5663-2018 https://hal.archives-ouvertes.fr/hal-02651012/file/Sutton_etal_silicon-stable-isotope_Biogeosciences_2018.pdf https://hal.archives-ouvertes.fr/hal-02651012 |
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institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
ACL southern-ocean biogenic silica marine diatoms natural-waters fractionation labrador sea hydrography mediterranean outflow deep-water masses eastern equatorial pacific envir anthro-se |
spellingShingle |
ACL southern-ocean biogenic silica marine diatoms natural-waters fractionation labrador sea hydrography mediterranean outflow deep-water masses eastern equatorial pacific envir anthro-se Sutton, Jill Souza, Gregory F., Garcia-Ibiliez, Maribel I. De La Rocha, Christina L. The silicon stable isotope distribution along the GEOVIDE section (GEOTRACES GA-01) of the North Atlantic Ocean |
topic_facet |
ACL southern-ocean biogenic silica marine diatoms natural-waters fractionation labrador sea hydrography mediterranean outflow deep-water masses eastern equatorial pacific envir anthro-se |
description |
WOS:000445272300001 International audience The stable isotope composition of dissolved silicon in seawater (delta Si-30(DSi)) was examined at 10 stations along the GEOVIDE section (GEOTRACES GA-01), spanning the North Atlantic Ocean (40-60 degrees N) and Labrador Sea. Variations in delta Si-30(DSi) below 500 m were closely tied to the distribution of water masses. Higher delta Si-30(DSi) values are associated with intermediate and deep water masses of northern Atlantic or Arctic Ocean origin, whilst lower delta Si-30(DSi) values are associated with DSi-rich waters sourced ultimately from the Southern Ocean. Correspondingly, the lowest delta Si-30(DSi) values were observed in the deep and abyssal eastern North Atlantic, where dense southern-sourced waters dominate. The extent to which the spreading of water masses influences the delta Si-30(DSi) distribution is marked clearly by Labrador Sea Water (LSW), whose high delta Si-30(DSi) signature is visible not only within its region of formation within the Labrador and Irminger seas, but also throughout the mid-depth western and eastern North Atlantic Ocean. Both delta Si-30(DSi) and hydrographic parameters document the circulation of LSW into the eastern North Atlantic, where it overlies southern-sourced Lower Deep Water. The GEOVIDE delta Si-30(DSi) distribution thus provides a clear view of the direct interaction between subpolar/polar water masses of northern and southern origin, and allow examination of the extent to which these far-field signals influence the local delta Si-30(DSi) distribution. |
author2 |
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 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) Institute of Geochemistry and Petrology ETH Zürich Department of Earth Sciences Swiss Federal Institute of Technology - ETH Zürich (D-ERDW) Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich)- Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich) Bjerknes Centre for Climate Research (BCCR) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB)-University of Bergen (UiB) Consejo Superior de Investigaciones Científicas Madrid (CSIC) ANR-10-LABX-0019,LabexMER,LabexMER Marine Excellence Research: a changing ocean(2010) ANR-13-BS06-0014,GEOVIDE,GEOVIDE, Une étude internationale GEOTRACES le long de la section OVIDE en Atlantique Nord et en Mer du Labrador(2013) ANR-12-PDOC-0025,BITMAP,Biodisponibilité du fer et des métaux traces dans les particules marines(2012) European Project: 708407,H2020,H2020-MSCA-IF-2015,SOSiC(2016) |
format |
Article in Journal/Newspaper |
author |
Sutton, Jill Souza, Gregory F., Garcia-Ibiliez, Maribel I. De La Rocha, Christina L. |
author_facet |
Sutton, Jill Souza, Gregory F., Garcia-Ibiliez, Maribel I. De La Rocha, Christina L. |
author_sort |
Sutton, Jill |
title |
The silicon stable isotope distribution along the GEOVIDE section (GEOTRACES GA-01) of the North Atlantic Ocean |
title_short |
The silicon stable isotope distribution along the GEOVIDE section (GEOTRACES GA-01) of the North Atlantic Ocean |
title_full |
The silicon stable isotope distribution along the GEOVIDE section (GEOTRACES GA-01) of the North Atlantic Ocean |
title_fullStr |
The silicon stable isotope distribution along the GEOVIDE section (GEOTRACES GA-01) of the North Atlantic Ocean |
title_full_unstemmed |
The silicon stable isotope distribution along the GEOVIDE section (GEOTRACES GA-01) of the North Atlantic Ocean |
title_sort |
silicon stable isotope distribution along the geovide section (geotraces ga-01) of the north atlantic ocean |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://doi.org/10.5194/bg-15-5663-2018 https://hal.archives-ouvertes.fr/hal-02651012/file/Sutton_etal_silicon-stable-isotope_Biogeosciences_2018.pdf https://hal.archives-ouvertes.fr/hal-02651012 |
geographic |
Arctic Arctic Ocean Pacific Southern Ocean |
geographic_facet |
Arctic Arctic Ocean Pacific Southern Ocean |
genre |
Arctic Arctic Ocean Labrador Sea North Atlantic Southern Ocean |
genre_facet |
Arctic Arctic Ocean Labrador Sea North Atlantic Southern Ocean |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences Biogeosciences, European Geosciences Union, 2018, 15 (18), pp.5663-5676. ⟨10.5194/bg-15-5663-2018⟩ |
op_relation |
hal-02651012 doi:10.5194/bg-15-5663-2018 10670/1.0i9o3r https://hal.archives-ouvertes.fr/hal-02651012/file/Sutton_etal_silicon-stable-isotope_Biogeosciences_2018.pdf https://hal.archives-ouvertes.fr/hal-02651012 |
op_rights |
lic_creative-commons other |
op_doi |
https://doi.org/10.5194/bg-15-5663-2018 |
container_title |
Biogeosciences |
container_volume |
15 |
container_issue |
18 |
container_start_page |
5663 |
op_container_end_page |
5676 |
_version_ |
1766344064510197760 |
spelling |
fttriple:oai:gotriple.eu:10670/1.0i9o3r 2023-05-15T15:13:31+02:00 The silicon stable isotope distribution along the GEOVIDE section (GEOTRACES GA-01) of the North Atlantic Ocean Sutton, Jill Souza, Gregory F., Garcia-Ibiliez, Maribel I. De La Rocha, Christina L. 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 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) Institute of Geochemistry and Petrology ETH Zürich Department of Earth Sciences Swiss Federal Institute of Technology - ETH Zürich (D-ERDW) Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich)- Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich) Bjerknes Centre for Climate Research (BCCR) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB)-University of Bergen (UiB) Consejo Superior de Investigaciones Científicas Madrid (CSIC) ANR-10-LABX-0019,LabexMER,LabexMER Marine Excellence Research: a changing ocean(2010) ANR-13-BS06-0014,GEOVIDE,GEOVIDE, Une étude internationale GEOTRACES le long de la section OVIDE en Atlantique Nord et en Mer du Labrador(2013) ANR-12-PDOC-0025,BITMAP,Biodisponibilité du fer et des métaux traces dans les particules marines(2012) European Project: 708407,H2020,H2020-MSCA-IF-2015,SOSiC(2016) 2018-01-01 https://doi.org/10.5194/bg-15-5663-2018 https://hal.archives-ouvertes.fr/hal-02651012/file/Sutton_etal_silicon-stable-isotope_Biogeosciences_2018.pdf https://hal.archives-ouvertes.fr/hal-02651012 en eng HAL CCSD European Geosciences Union hal-02651012 doi:10.5194/bg-15-5663-2018 10670/1.0i9o3r https://hal.archives-ouvertes.fr/hal-02651012/file/Sutton_etal_silicon-stable-isotope_Biogeosciences_2018.pdf https://hal.archives-ouvertes.fr/hal-02651012 lic_creative-commons other Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences Biogeosciences, European Geosciences Union, 2018, 15 (18), pp.5663-5676. ⟨10.5194/bg-15-5663-2018⟩ ACL southern-ocean biogenic silica marine diatoms natural-waters fractionation labrador sea hydrography mediterranean outflow deep-water masses eastern equatorial pacific envir anthro-se Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2018 fttriple https://doi.org/10.5194/bg-15-5663-2018 2023-01-22T17:57:35Z WOS:000445272300001 International audience The stable isotope composition of dissolved silicon in seawater (delta Si-30(DSi)) was examined at 10 stations along the GEOVIDE section (GEOTRACES GA-01), spanning the North Atlantic Ocean (40-60 degrees N) and Labrador Sea. Variations in delta Si-30(DSi) below 500 m were closely tied to the distribution of water masses. Higher delta Si-30(DSi) values are associated with intermediate and deep water masses of northern Atlantic or Arctic Ocean origin, whilst lower delta Si-30(DSi) values are associated with DSi-rich waters sourced ultimately from the Southern Ocean. Correspondingly, the lowest delta Si-30(DSi) values were observed in the deep and abyssal eastern North Atlantic, where dense southern-sourced waters dominate. The extent to which the spreading of water masses influences the delta Si-30(DSi) distribution is marked clearly by Labrador Sea Water (LSW), whose high delta Si-30(DSi) signature is visible not only within its region of formation within the Labrador and Irminger seas, but also throughout the mid-depth western and eastern North Atlantic Ocean. Both delta Si-30(DSi) and hydrographic parameters document the circulation of LSW into the eastern North Atlantic, where it overlies southern-sourced Lower Deep Water. The GEOVIDE delta Si-30(DSi) distribution thus provides a clear view of the direct interaction between subpolar/polar water masses of northern and southern origin, and allow examination of the extent to which these far-field signals influence the local delta Si-30(DSi) distribution. Article in Journal/Newspaper Arctic Arctic Ocean Labrador Sea North Atlantic Southern Ocean Unknown Arctic Arctic Ocean Pacific Southern Ocean Biogeosciences 15 18 5663 5676 |