Silica fluxes in the northeast Atlantic frontal zone of Mode Water formation (38 degrees-45 degrees N, 16 degrees-22 degrees W) in 2001-2002
International audience [ 1] The biogenic (BSi) and lithogenic (LSi) silica export fluxes were investigated in the northeast Atlantic (38 degrees - 45 degrees N, 16 degrees - 22 degrees W) as part of the Programme Ocean Multidisciplinaire Meso Echelle (POMME) program in 2001 - 2002. They were measure...
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Online Access: | https://hal.science/hal-03494209 https://hal.science/hal-03494209/document https://hal.science/hal-03494209/file/Journal%20of%20Geophysical%20Research%20Oceans%20-%202005%20-%20Mosseri%20-%20Silica%20fluxes%20in%20the%20northeast%20Atlantic%20frontal%20zone%20of%20Mode.pdf https://doi.org/10.1029/2004JC002615 |
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ftunivnantes:oai:HAL:hal-03494209v1 2023-05-15T17:41:21+02:00 Silica fluxes in the northeast Atlantic frontal zone of Mode Water formation (38 degrees-45 degrees N, 16 degrees-22 degrees W) in 2001-2002 Mosseri, J Quéguiner, B. Rimmelin, P Leblond, N Guieu, C Observatoire océanologique de Villefranche-sur-mer (OOVM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'océanographie de Villefranche (LOV) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2005 https://hal.science/hal-03494209 https://hal.science/hal-03494209/document https://hal.science/hal-03494209/file/Journal%20of%20Geophysical%20Research%20Oceans%20-%202005%20-%20Mosseri%20-%20Silica%20fluxes%20in%20the%20northeast%20Atlantic%20frontal%20zone%20of%20Mode.pdf https://doi.org/10.1029/2004JC002615 en eng HAL CCSD Wiley-Blackwell info:eu-repo/semantics/altIdentifier/doi/10.1029/2004JC002615 hal-03494209 https://hal.science/hal-03494209 https://hal.science/hal-03494209/document https://hal.science/hal-03494209/file/Journal%20of%20Geophysical%20Research%20Oceans%20-%202005%20-%20Mosseri%20-%20Silica%20fluxes%20in%20the%20northeast%20Atlantic%20frontal%20zone%20of%20Mode.pdf doi:10.1029/2004JC002615 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://hal.science/hal-03494209 Journal of Geophysical Research. Oceans, 2005, 110 (C7), ⟨10.1029/2004JC002615⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2005 ftunivnantes https://doi.org/10.1029/2004JC002615 2023-02-08T03:28:58Z International audience [ 1] The biogenic (BSi) and lithogenic (LSi) silica export fluxes were investigated in the northeast Atlantic (38 degrees - 45 degrees N, 16 degrees - 22 degrees W) as part of the Programme Ocean Multidisciplinaire Meso Echelle (POMME) program in 2001 - 2002. They were measured at four stations located on both sides of a frontal zone (40 degrees - 42 degrees N) by means of permanent moorings of sediment traps deployed at 400 and 1000 m depth. Averaged over the area, the annual BSi fluxes ( corrected from Th-230 trapping efficiencies) ranged between 0.240 mmol m(-2) d(-1) at 400 m to 0.316 mmol m(-2) d(-1) at 1000 m. The bulk annual BSi fluxes are comparable to bulk BSi export fluxes recorded for oligotrophic areas. The annual export flux of LSi ( range 0.029 mmol m(-2) d(-1) at 400 m to 0.054 mmol m(-2) d(-1) at 1000 m) was lower than BSi and accounted for 10% of the total silica export flux. Results show a strong coupling between the two siliceous particulate fractions, which is interpreted as reflecting LSi scavenging by BSi and limitation of BSi production in surface water by lithogenic ( trace metals) inputs. BSi export was maximum at the beginning of the productive season during the spring bloom. However, annual BSi export fluxes in 2001 were quite higher at 400 m in the southern area ( e. g., 0.249 - 0.288 at the southeast station versus 0.211 mmol BSi m(-2) d(-1) at the northeast station) contradictory to the classical south-north surface production increase. We suggest an advective lateral transport within the upper 400 m of siliceous particles from the northern, more productive area to the southern region. Article in Journal/Newspaper Northeast Atlantic Université de Nantes: HAL-UNIV-NANTES Journal of Geophysical Research 110 C7 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Mosseri, J Quéguiner, B. Rimmelin, P Leblond, N Guieu, C Silica fluxes in the northeast Atlantic frontal zone of Mode Water formation (38 degrees-45 degrees N, 16 degrees-22 degrees W) in 2001-2002 |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience [ 1] The biogenic (BSi) and lithogenic (LSi) silica export fluxes were investigated in the northeast Atlantic (38 degrees - 45 degrees N, 16 degrees - 22 degrees W) as part of the Programme Ocean Multidisciplinaire Meso Echelle (POMME) program in 2001 - 2002. They were measured at four stations located on both sides of a frontal zone (40 degrees - 42 degrees N) by means of permanent moorings of sediment traps deployed at 400 and 1000 m depth. Averaged over the area, the annual BSi fluxes ( corrected from Th-230 trapping efficiencies) ranged between 0.240 mmol m(-2) d(-1) at 400 m to 0.316 mmol m(-2) d(-1) at 1000 m. The bulk annual BSi fluxes are comparable to bulk BSi export fluxes recorded for oligotrophic areas. The annual export flux of LSi ( range 0.029 mmol m(-2) d(-1) at 400 m to 0.054 mmol m(-2) d(-1) at 1000 m) was lower than BSi and accounted for 10% of the total silica export flux. Results show a strong coupling between the two siliceous particulate fractions, which is interpreted as reflecting LSi scavenging by BSi and limitation of BSi production in surface water by lithogenic ( trace metals) inputs. BSi export was maximum at the beginning of the productive season during the spring bloom. However, annual BSi export fluxes in 2001 were quite higher at 400 m in the southern area ( e. g., 0.249 - 0.288 at the southeast station versus 0.211 mmol BSi m(-2) d(-1) at the northeast station) contradictory to the classical south-north surface production increase. We suggest an advective lateral transport within the upper 400 m of siliceous particles from the northern, more productive area to the southern region. |
author2 |
Observatoire océanologique de Villefranche-sur-mer (OOVM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'océanographie de Villefranche (LOV) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Mosseri, J Quéguiner, B. Rimmelin, P Leblond, N Guieu, C |
author_facet |
Mosseri, J Quéguiner, B. Rimmelin, P Leblond, N Guieu, C |
author_sort |
Mosseri, J |
title |
Silica fluxes in the northeast Atlantic frontal zone of Mode Water formation (38 degrees-45 degrees N, 16 degrees-22 degrees W) in 2001-2002 |
title_short |
Silica fluxes in the northeast Atlantic frontal zone of Mode Water formation (38 degrees-45 degrees N, 16 degrees-22 degrees W) in 2001-2002 |
title_full |
Silica fluxes in the northeast Atlantic frontal zone of Mode Water formation (38 degrees-45 degrees N, 16 degrees-22 degrees W) in 2001-2002 |
title_fullStr |
Silica fluxes in the northeast Atlantic frontal zone of Mode Water formation (38 degrees-45 degrees N, 16 degrees-22 degrees W) in 2001-2002 |
title_full_unstemmed |
Silica fluxes in the northeast Atlantic frontal zone of Mode Water formation (38 degrees-45 degrees N, 16 degrees-22 degrees W) in 2001-2002 |
title_sort |
silica fluxes in the northeast atlantic frontal zone of mode water formation (38 degrees-45 degrees n, 16 degrees-22 degrees w) in 2001-2002 |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://hal.science/hal-03494209 https://hal.science/hal-03494209/document https://hal.science/hal-03494209/file/Journal%20of%20Geophysical%20Research%20Oceans%20-%202005%20-%20Mosseri%20-%20Silica%20fluxes%20in%20the%20northeast%20Atlantic%20frontal%20zone%20of%20Mode.pdf https://doi.org/10.1029/2004JC002615 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://hal.science/hal-03494209 Journal of Geophysical Research. Oceans, 2005, 110 (C7), ⟨10.1029/2004JC002615⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2004JC002615 hal-03494209 https://hal.science/hal-03494209 https://hal.science/hal-03494209/document https://hal.science/hal-03494209/file/Journal%20of%20Geophysical%20Research%20Oceans%20-%202005%20-%20Mosseri%20-%20Silica%20fluxes%20in%20the%20northeast%20Atlantic%20frontal%20zone%20of%20Mode.pdf doi:10.1029/2004JC002615 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2004JC002615 |
container_title |
Journal of Geophysical Research |
container_volume |
110 |
container_issue |
C7 |
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1766142862686158848 |