The Southern Ocean silica cycle
International audience The Southern Ocean is a major opal sink and plays a key role in the silica cycle of the world ocean. So far however, a complete cycle of silicon in the Southern Ocean has not been published. On one hand, Southern Ocean surface waters receive considerable amounts of silicic aci...
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fttriple:oai:gotriple.eu:10670/1.5uvctx 2023-05-15T13:45:14+02:00 The Southern Ocean silica cycle Tréguer, Paul 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) 2014-11-01 https://doi.org/10.1016/j.crte.2014.07.003 https://hal.univ-brest.fr/hal-01108942 en eng HAL CCSD Elsevier hal-01108942 doi:10.1016/j.crte.2014.07.003 10670/1.5uvctx https://hal.univ-brest.fr/hal-01108942 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société Comptes Rendus Géoscience Comptes Rendus Géoscience, Elsevier, 2014, 346 (11-12), pp.279-286. ⟨10.1016/j.crte.2014.07.003⟩ ACL Silicic acid Silica cycle Southern Ocean Steady state Silica production Opal accumulation geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2014 fttriple https://doi.org/10.1016/j.crte.2014.07.003 2023-01-22T16:49:56Z International audience The Southern Ocean is a major opal sink and plays a key role in the silica cycle of the world ocean. So far however, a complete cycle of silicon in the Southern Ocean has not been published. On one hand, Southern Ocean surface waters receive considerable amounts of silicic acid (dissolved silica, DSi) from the rest of the world ocean through the upwelling of the Circumpolar Deep Water, fed by contributions of deep waters of the Atlantic, Indian, and Pacific Oceans. On the other hand, the Southern Ocean exports a considerable flux of the silicic acid that is not used by diatoms in surface waters through the northward pathways of the Sub-Antarctic Mode Water, of the Antarctic Intermediate Water, and of the Antarctic Bottom Water. Thus the Southern Ocean is a source of DSi for the rest of the world ocean. Here we show that the Southern Ocean is a net importer of DSi: because there is no significant external input of DSi, the flux of DSi imported through the Circumpolar Deep Water pathway compensates the sink flux of biogenic silica in sediments. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Unknown Antarctic Indian Pacific Southern Ocean The Antarctic Comptes Rendus Geoscience 346 11-12 279 286 |
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English |
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ACL Silicic acid Silica cycle Southern Ocean Steady state Silica production Opal accumulation geo envir |
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ACL Silicic acid Silica cycle Southern Ocean Steady state Silica production Opal accumulation geo envir Tréguer, Paul The Southern Ocean silica cycle |
topic_facet |
ACL Silicic acid Silica cycle Southern Ocean Steady state Silica production Opal accumulation geo envir |
description |
International audience The Southern Ocean is a major opal sink and plays a key role in the silica cycle of the world ocean. So far however, a complete cycle of silicon in the Southern Ocean has not been published. On one hand, Southern Ocean surface waters receive considerable amounts of silicic acid (dissolved silica, DSi) from the rest of the world ocean through the upwelling of the Circumpolar Deep Water, fed by contributions of deep waters of the Atlantic, Indian, and Pacific Oceans. On the other hand, the Southern Ocean exports a considerable flux of the silicic acid that is not used by diatoms in surface waters through the northward pathways of the Sub-Antarctic Mode Water, of the Antarctic Intermediate Water, and of the Antarctic Bottom Water. Thus the Southern Ocean is a source of DSi for the rest of the world ocean. Here we show that the Southern Ocean is a net importer of DSi: because there is no significant external input of DSi, the flux of DSi imported through the Circumpolar Deep Water pathway compensates the sink flux of biogenic silica in sediments. |
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) |
format |
Article in Journal/Newspaper |
author |
Tréguer, Paul |
author_facet |
Tréguer, Paul |
author_sort |
Tréguer, Paul |
title |
The Southern Ocean silica cycle |
title_short |
The Southern Ocean silica cycle |
title_full |
The Southern Ocean silica cycle |
title_fullStr |
The Southern Ocean silica cycle |
title_full_unstemmed |
The Southern Ocean silica cycle |
title_sort |
southern ocean silica cycle |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://doi.org/10.1016/j.crte.2014.07.003 https://hal.univ-brest.fr/hal-01108942 |
geographic |
Antarctic Indian Pacific Southern Ocean The Antarctic |
geographic_facet |
Antarctic Indian Pacific Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société Comptes Rendus Géoscience Comptes Rendus Géoscience, Elsevier, 2014, 346 (11-12), pp.279-286. ⟨10.1016/j.crte.2014.07.003⟩ |
op_relation |
hal-01108942 doi:10.1016/j.crte.2014.07.003 10670/1.5uvctx https://hal.univ-brest.fr/hal-01108942 |
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op_doi |
https://doi.org/10.1016/j.crte.2014.07.003 |
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Comptes Rendus Geoscience |
container_volume |
346 |
container_issue |
11-12 |
container_start_page |
279 |
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286 |
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