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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ftunivbrest:oai:HAL:hal-01108942v1 2024-02-11T09:58:25+01:00 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 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) 2014-11 https://hal.univ-brest.fr/hal-01108942 https://doi.org/10.1016/j.crte.2014.07.003 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.crte.2014.07.003 hal-01108942 https://hal.univ-brest.fr/hal-01108942 doi:10.1016/j.crte.2014.07.003 Comptes Rendus Géoscience https://hal.univ-brest.fr/hal-01108942 Comptes Rendus Géoscience, 2014, 346 (11-12), pp.279-286. ⟨10.1016/j.crte.2014.07.003⟩ http://www.sciencedirect.com.biblioplanets.gate.inist.fr/science/article/pii/S1631071314000972 Southern Ocean Steady state Opal accumulation Silica production ACL Silicic acid Silica cycle [CHIM]Chemical Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2014 ftunivbrest https://doi.org/10.1016/j.crte.2014.07.003 2024-01-23T23:42:08Z 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 Université de Bretagne Occidentale: HAL Antarctic Southern Ocean The Antarctic Pacific Indian Comptes Rendus Geoscience 346 11-12 279 286 |
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Open Polar |
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Université de Bretagne Occidentale: HAL |
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ftunivbrest |
language |
English |
topic |
Southern Ocean Steady state Opal accumulation Silica production ACL Silicic acid Silica cycle [CHIM]Chemical Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
Southern Ocean Steady state Opal accumulation Silica production ACL Silicic acid Silica cycle [CHIM]Chemical Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Tréguer, Paul The Southern Ocean silica cycle |
topic_facet |
Southern Ocean Steady state Opal accumulation Silica production ACL Silicic acid Silica cycle [CHIM]Chemical Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
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 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) |
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://hal.univ-brest.fr/hal-01108942 https://doi.org/10.1016/j.crte.2014.07.003 |
geographic |
Antarctic Southern Ocean The Antarctic Pacific Indian |
geographic_facet |
Antarctic Southern Ocean The Antarctic Pacific Indian |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
Comptes Rendus Géoscience https://hal.univ-brest.fr/hal-01108942 Comptes Rendus Géoscience, 2014, 346 (11-12), pp.279-286. ⟨10.1016/j.crte.2014.07.003⟩ http://www.sciencedirect.com.biblioplanets.gate.inist.fr/science/article/pii/S1631071314000972 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.crte.2014.07.003 hal-01108942 https://hal.univ-brest.fr/hal-01108942 doi:10.1016/j.crte.2014.07.003 |
op_doi |
https://doi.org/10.1016/j.crte.2014.07.003 |
container_title |
Comptes Rendus Geoscience |
container_volume |
346 |
container_issue |
11-12 |
container_start_page |
279 |
op_container_end_page |
286 |
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