In situ measurement of the biogeochemical properties of Southern Ocean mesoscale eddies in the Southwest Indian Ocean, April 2014
Several open-ocean mesoscale features – a "young" warm-core (anti-cyclonic) eddy at 52° S, an "older" warm-core eddy at 57.5° S and an adjacent cold-core (cyclonic) eddy at 56° S – were surveyed during a R/V S.A. Agulhas II cruise in April 2014. The main aim of the survey was to...
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Copernicus Publications
2015
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00014540 2023-05-15T18:25:07+02:00 In situ measurement of the biogeochemical properties of Southern Ocean mesoscale eddies in the Southwest Indian Ocean, April 2014 de Villiers, S. Siswana, K. Vena, K. 2015-12 electronic https://doi.org/10.5194/essd-7-415-2015 https://noa.gwlb.de/receive/cop_mods_00014540 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00014495/essd-7-415-2015.pdf https://essd.copernicus.org/articles/7/415/2015/essd-7-415-2015.pdf eng eng Copernicus Publications Earth System Science Data -- http://www.earth-syst-sci-data.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2475469 -- 1866-3516 https://doi.org/10.5194/essd-7-415-2015 https://noa.gwlb.de/receive/cop_mods_00014540 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00014495/essd-7-415-2015.pdf https://essd.copernicus.org/articles/7/415/2015/essd-7-415-2015.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2015 ftnonlinearchiv https://doi.org/10.5194/essd-7-415-2015 2022-02-08T22:55:04Z Several open-ocean mesoscale features – a "young" warm-core (anti-cyclonic) eddy at 52° S, an "older" warm-core eddy at 57.5° S and an adjacent cold-core (cyclonic) eddy at 56° S – were surveyed during a R/V S.A. Agulhas II cruise in April 2014. The main aim of the survey was to obtain hydrographical and biogeochemical profile data for contrasting open-ocean eddies in the Southern Ocean, which will be suitable for comparative study and modelling of their heat, salt and nutrient characteristics, and the changes that occur in these properties as warm-core eddies migrate from the polar front southwards. The major result is that the older warm-core eddy at 57.5° S is, at its core, 2.7 °C colder than a younger eddy at 52° S, while its dissolved silicate levels are almost 500 % higher and accompanied by chlorophyll a levels that are more than 200 % higher than that in the younger eddy. A total of 18 CTD stations were occupied in a sector south of the Southwest Indian Ridge, along three transects crossing several mesoscale features identified from satellite altimetry data prior to the cruise. The CTD data, as well as chlorophyll a and dissolved nutrient data (for NO3−, NO2−, PO43− and SiO2), have been processed, quality controlled and made available via the PANGAEA Data Archiving and Publication database at doi:10.1594/PANGAEA.848875. Article in Journal/Newspaper Southern Ocean Niedersächsisches Online-Archiv NOA Indian Southern Ocean Earth System Science Data 7 2 415 422 |
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Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung de Villiers, S. Siswana, K. Vena, K. In situ measurement of the biogeochemical properties of Southern Ocean mesoscale eddies in the Southwest Indian Ocean, April 2014 |
topic_facet |
article Verlagsveröffentlichung |
description |
Several open-ocean mesoscale features – a "young" warm-core (anti-cyclonic) eddy at 52° S, an "older" warm-core eddy at 57.5° S and an adjacent cold-core (cyclonic) eddy at 56° S – were surveyed during a R/V S.A. Agulhas II cruise in April 2014. The main aim of the survey was to obtain hydrographical and biogeochemical profile data for contrasting open-ocean eddies in the Southern Ocean, which will be suitable for comparative study and modelling of their heat, salt and nutrient characteristics, and the changes that occur in these properties as warm-core eddies migrate from the polar front southwards. The major result is that the older warm-core eddy at 57.5° S is, at its core, 2.7 °C colder than a younger eddy at 52° S, while its dissolved silicate levels are almost 500 % higher and accompanied by chlorophyll a levels that are more than 200 % higher than that in the younger eddy. A total of 18 CTD stations were occupied in a sector south of the Southwest Indian Ridge, along three transects crossing several mesoscale features identified from satellite altimetry data prior to the cruise. The CTD data, as well as chlorophyll a and dissolved nutrient data (for NO3−, NO2−, PO43− and SiO2), have been processed, quality controlled and made available via the PANGAEA Data Archiving and Publication database at doi:10.1594/PANGAEA.848875. |
format |
Article in Journal/Newspaper |
author |
de Villiers, S. Siswana, K. Vena, K. |
author_facet |
de Villiers, S. Siswana, K. Vena, K. |
author_sort |
de Villiers, S. |
title |
In situ measurement of the biogeochemical properties of Southern Ocean mesoscale eddies in the Southwest Indian Ocean, April 2014 |
title_short |
In situ measurement of the biogeochemical properties of Southern Ocean mesoscale eddies in the Southwest Indian Ocean, April 2014 |
title_full |
In situ measurement of the biogeochemical properties of Southern Ocean mesoscale eddies in the Southwest Indian Ocean, April 2014 |
title_fullStr |
In situ measurement of the biogeochemical properties of Southern Ocean mesoscale eddies in the Southwest Indian Ocean, April 2014 |
title_full_unstemmed |
In situ measurement of the biogeochemical properties of Southern Ocean mesoscale eddies in the Southwest Indian Ocean, April 2014 |
title_sort |
in situ measurement of the biogeochemical properties of southern ocean mesoscale eddies in the southwest indian ocean, april 2014 |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/essd-7-415-2015 https://noa.gwlb.de/receive/cop_mods_00014540 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00014495/essd-7-415-2015.pdf https://essd.copernicus.org/articles/7/415/2015/essd-7-415-2015.pdf |
geographic |
Indian Southern Ocean |
geographic_facet |
Indian Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
Earth System Science Data -- http://www.earth-syst-sci-data.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2475469 -- 1866-3516 https://doi.org/10.5194/essd-7-415-2015 https://noa.gwlb.de/receive/cop_mods_00014540 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00014495/essd-7-415-2015.pdf https://essd.copernicus.org/articles/7/415/2015/essd-7-415-2015.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/essd-7-415-2015 |
container_title |
Earth System Science Data |
container_volume |
7 |
container_issue |
2 |
container_start_page |
415 |
op_container_end_page |
422 |
_version_ |
1766206338020409344 |