The silicon stable isotope distribution along the GEOVIDE section (GEOTRACES GA-01) of the North Atlantic Ocean
The stable isotope composition of dissolved silicon in seawater (δ30SiDSi) was examined at 10 stations along the GEOVIDE section (GEOTRACES GA-01), spanning the North Atlantic Ocean (40–60°N) and Labrador Sea. Variations in δ30SiDSi below 500m were closely tied to the distribution of water masses. H...
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Online Access: | https://doi.org/10.5194/bg-15-5663-2018 https://archimer.ifremer.fr/doc/00457/56881/58744.pdf https://archimer.ifremer.fr/doc/00457/56881/58745.pdf https://archimer.ifremer.fr/doc/00457/56881/58746.pdf https://archimer.ifremer.fr/doc/00457/56881/58747.pdf https://archimer.ifremer.fr/doc/00457/56881/ |
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fttriple:oai:gotriple.eu:10670/1.l1xc95 2023-05-15T15:08:42+02:00 The silicon stable isotope distribution along the GEOVIDE section (GEOTRACES GA-01) of the North Atlantic Ocean Sutton, Jill N. De Souza, Gregory F. Garcia-ibiliez, Maribel I. De La Rocha, Christina L. https://doi.org/10.5194/bg-15-5663-2018 https://archimer.ifremer.fr/doc/00457/56881/58744.pdf https://archimer.ifremer.fr/doc/00457/56881/58745.pdf https://archimer.ifremer.fr/doc/00457/56881/58746.pdf https://archimer.ifremer.fr/doc/00457/56881/58747.pdf https://archimer.ifremer.fr/doc/00457/56881/ en eng Copernicus Gesellschaft Mbh doi:10.5194/bg-15-5663-2018 10670/1.l1xc95 https://archimer.ifremer.fr/doc/00457/56881/58744.pdf https://archimer.ifremer.fr/doc/00457/56881/58745.pdf https://archimer.ifremer.fr/doc/00457/56881/58746.pdf https://archimer.ifremer.fr/doc/00457/56881/58747.pdf https://archimer.ifremer.fr/doc/00457/56881/ lic_creative-commons Archimer, archive institutionnelle de l'Ifremer Biogeosciences (1726-4170) (Copernicus Gesellschaft Mbh), 2018-09 , Vol. 15 , N. 18 , P. 5663-5676 envir geo Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ fttriple https://doi.org/10.5194/bg-15-5663-2018 2023-01-22T17:01:28Z The stable isotope composition of dissolved silicon in seawater (δ30SiDSi) was examined at 10 stations along the GEOVIDE section (GEOTRACES GA-01), spanning the North Atlantic Ocean (40–60°N) and Labrador Sea. Variations in δ30SiDSi below 500m were closely tied to the distribution of water masses. Higher δ30SiDSi values are associated with intermediate and deep water masses of northern Atlantic or Arctic Ocean origin, whilst lower δ30SiDSi values are associated with DSi-rich waters sourced ultimately from the Southern Ocean. Correspondingly, the lowest δ30SiDSi 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 δ30SiDSi distribution is marked clearly by Labrador Sea Water (LSW), whose high δ30SiDSi 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 δ30SiDSi and hydrographic parameters document the circulation of LSW into the eastern North Atlantic, where it overlies southern-sourced Lower Deep Water. The GEOVIDE δ30SiDSi 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 δ30SiDSi distribution. Text Arctic Arctic Ocean Labrador Sea North Atlantic Southern Ocean Unknown Arctic Arctic Ocean Southern Ocean Biogeosciences 15 18 5663 5676 |
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fttriple |
language |
English |
topic |
envir geo |
spellingShingle |
envir geo Sutton, Jill N. De 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 |
envir geo |
description |
The stable isotope composition of dissolved silicon in seawater (δ30SiDSi) was examined at 10 stations along the GEOVIDE section (GEOTRACES GA-01), spanning the North Atlantic Ocean (40–60°N) and Labrador Sea. Variations in δ30SiDSi below 500m were closely tied to the distribution of water masses. Higher δ30SiDSi values are associated with intermediate and deep water masses of northern Atlantic or Arctic Ocean origin, whilst lower δ30SiDSi values are associated with DSi-rich waters sourced ultimately from the Southern Ocean. Correspondingly, the lowest δ30SiDSi 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 δ30SiDSi distribution is marked clearly by Labrador Sea Water (LSW), whose high δ30SiDSi 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 δ30SiDSi and hydrographic parameters document the circulation of LSW into the eastern North Atlantic, where it overlies southern-sourced Lower Deep Water. The GEOVIDE δ30SiDSi 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 δ30SiDSi distribution. |
format |
Text |
author |
Sutton, Jill N. De Souza, Gregory F. Garcia-ibiliez, Maribel I. De La Rocha, Christina L. |
author_facet |
Sutton, Jill N. De Souza, Gregory F. Garcia-ibiliez, Maribel I. De La Rocha, Christina L. |
author_sort |
Sutton, Jill N. |
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 |
Copernicus Gesellschaft Mbh |
url |
https://doi.org/10.5194/bg-15-5663-2018 https://archimer.ifremer.fr/doc/00457/56881/58744.pdf https://archimer.ifremer.fr/doc/00457/56881/58745.pdf https://archimer.ifremer.fr/doc/00457/56881/58746.pdf https://archimer.ifremer.fr/doc/00457/56881/58747.pdf https://archimer.ifremer.fr/doc/00457/56881/ |
geographic |
Arctic Arctic Ocean Southern Ocean |
geographic_facet |
Arctic Arctic Ocean 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 |
Archimer, archive institutionnelle de l'Ifremer Biogeosciences (1726-4170) (Copernicus Gesellschaft Mbh), 2018-09 , Vol. 15 , N. 18 , P. 5663-5676 |
op_relation |
doi:10.5194/bg-15-5663-2018 10670/1.l1xc95 https://archimer.ifremer.fr/doc/00457/56881/58744.pdf https://archimer.ifremer.fr/doc/00457/56881/58745.pdf https://archimer.ifremer.fr/doc/00457/56881/58746.pdf https://archimer.ifremer.fr/doc/00457/56881/58747.pdf https://archimer.ifremer.fr/doc/00457/56881/ |
op_rights |
lic_creative-commons |
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_ |
1766340015219015680 |