Nutrient mineralization rates and ratios in the eastern South Atlantic - art. no. C05030
The physical and biogeochemical components of nutrients and inorganic carbon distributions along WOCE line A14 are objectively separated by means of a constrained least-squares regression analysis of the mixing of eastern South Atlantic water masses. Contrary to previous approaches, essentially devo...
Published in: | Journal of Geophysical Research |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Geophysical Union
2004
|
Subjects: | |
Online Access: | https://archimer.ifremer.fr/doc/2004/publication-836.pdf https://doi.org/10.1029/2003JC002051 https://archimer.ifremer.fr/doc/00000/836/ |
id |
ftarchimer:oai:archimer.ifremer.fr:836 |
---|---|
record_format |
openpolar |
spelling |
ftarchimer:oai:archimer.ifremer.fr:836 2023-05-15T14:04:56+02:00 Nutrient mineralization rates and ratios in the eastern South Atlantic - art. no. C05030 Brea, Samenta Alvarez Salgado, X Alvarez, M Perez, F Memery, L Mercier, Herle Messias, M.j. 2004-05 application/pdf https://archimer.ifremer.fr/doc/2004/publication-836.pdf https://doi.org/10.1029/2003JC002051 https://archimer.ifremer.fr/doc/00000/836/ eng eng American Geophysical Union https://archimer.ifremer.fr/doc/2004/publication-836.pdf doi:10.1029/2003JC002051 https://archimer.ifremer.fr/doc/00000/836/ 2004 by the American Geophysical Union info:eu-repo/semantics/openAccess restricted use Journal of Geophysical Union - Research C - Oceans (0148-0227) (American Geophysical Union), 2004-05 , Vol. 109 , N. C5 , P. NIL_29-NIL_43 South Atlantic Biogeochemical cycles Water masses text Publication info:eu-repo/semantics/article 2004 ftarchimer https://doi.org/10.1029/2003JC002051 2021-09-23T20:13:24Z The physical and biogeochemical components of nutrients and inorganic carbon distributions along WOCE line A14 are objectively separated by means of a constrained least-squares regression analysis of the mixing of eastern South Atlantic water masses. Contrary to previous approaches, essentially devoted to the intricate South Atlantic circulation, this work is focused on the effects of circulation on nutrients and carbon biogeochemistry, with special emphasis on the stoichiometry and the rate of mineralization processes. Combination of nutrient and apparent CFC-age anomalies, derived from the mixing analysis, indicate faster mineralization rates in the equatorial (12 x 10(-2) mumol P kg(-1) yr(-1)) and subequatorial (5.3 x 10(-2) mumol P kg(-1) yr(-1)) than in the subtropical (4.3 x 10(-2) mumol P kg(-1) yr(-1)) regime at the South Atlantic Central Water (SACW) depth range. Lower rates are obtained in the Antarctic Intermediate Water (AAIW) domain (3.0 x 10(-2) mumol P kg(-1) yr(-1)). Significant variation with depth of O-2/C/N/P anomalies indicates preferential mineralization of proteins in thermocline waters, as compared with the reference Redfield composition. Article in Journal/Newspaper Antarc* Antarctic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Antarctic The Antarctic Journal of Geophysical Research 109 C5 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
South Atlantic Biogeochemical cycles Water masses |
spellingShingle |
South Atlantic Biogeochemical cycles Water masses Brea, Samenta Alvarez Salgado, X Alvarez, M Perez, F Memery, L Mercier, Herle Messias, M.j. Nutrient mineralization rates and ratios in the eastern South Atlantic - art. no. C05030 |
topic_facet |
South Atlantic Biogeochemical cycles Water masses |
description |
The physical and biogeochemical components of nutrients and inorganic carbon distributions along WOCE line A14 are objectively separated by means of a constrained least-squares regression analysis of the mixing of eastern South Atlantic water masses. Contrary to previous approaches, essentially devoted to the intricate South Atlantic circulation, this work is focused on the effects of circulation on nutrients and carbon biogeochemistry, with special emphasis on the stoichiometry and the rate of mineralization processes. Combination of nutrient and apparent CFC-age anomalies, derived from the mixing analysis, indicate faster mineralization rates in the equatorial (12 x 10(-2) mumol P kg(-1) yr(-1)) and subequatorial (5.3 x 10(-2) mumol P kg(-1) yr(-1)) than in the subtropical (4.3 x 10(-2) mumol P kg(-1) yr(-1)) regime at the South Atlantic Central Water (SACW) depth range. Lower rates are obtained in the Antarctic Intermediate Water (AAIW) domain (3.0 x 10(-2) mumol P kg(-1) yr(-1)). Significant variation with depth of O-2/C/N/P anomalies indicates preferential mineralization of proteins in thermocline waters, as compared with the reference Redfield composition. |
format |
Article in Journal/Newspaper |
author |
Brea, Samenta Alvarez Salgado, X Alvarez, M Perez, F Memery, L Mercier, Herle Messias, M.j. |
author_facet |
Brea, Samenta Alvarez Salgado, X Alvarez, M Perez, F Memery, L Mercier, Herle Messias, M.j. |
author_sort |
Brea, Samenta |
title |
Nutrient mineralization rates and ratios in the eastern South Atlantic - art. no. C05030 |
title_short |
Nutrient mineralization rates and ratios in the eastern South Atlantic - art. no. C05030 |
title_full |
Nutrient mineralization rates and ratios in the eastern South Atlantic - art. no. C05030 |
title_fullStr |
Nutrient mineralization rates and ratios in the eastern South Atlantic - art. no. C05030 |
title_full_unstemmed |
Nutrient mineralization rates and ratios in the eastern South Atlantic - art. no. C05030 |
title_sort |
nutrient mineralization rates and ratios in the eastern south atlantic - art. no. c05030 |
publisher |
American Geophysical Union |
publishDate |
2004 |
url |
https://archimer.ifremer.fr/doc/2004/publication-836.pdf https://doi.org/10.1029/2003JC002051 https://archimer.ifremer.fr/doc/00000/836/ |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Journal of Geophysical Union - Research C - Oceans (0148-0227) (American Geophysical Union), 2004-05 , Vol. 109 , N. C5 , P. NIL_29-NIL_43 |
op_relation |
https://archimer.ifremer.fr/doc/2004/publication-836.pdf doi:10.1029/2003JC002051 https://archimer.ifremer.fr/doc/00000/836/ |
op_rights |
2004 by the American Geophysical Union info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1029/2003JC002051 |
container_title |
Journal of Geophysical Research |
container_volume |
109 |
container_issue |
C5 |
_version_ |
1766276387626287104 |