Differences between 1999 and 2010 across the Falkland Plateau : fronts and water masses
© The Author(s), 2017. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Ocean Science 13 (2017): 577-587, doi:10.5194/os-13-577-2017. Decadal differences in the Falkland Plateau are studied from the two full-depth hydrog...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/9136 2023-05-15T13:48:30+02:00 Differences between 1999 and 2010 across the Falkland Plateau : fronts and water masses Perez-Hernandez, M. Dolores Hernández-Guerra, Alonso Comas-Rodríguez, Isis Benítez-Barrios, Verónica M. Fraile-Nuez, Eugenio Pelegrí, Josep Naveira Garabato, Alberto C. 2017-07-07 https://hdl.handle.net/1912/9136 en_US eng Copernicus Publications on behalf of the European Geosciences Union https://doi.org/10.5194/os-13-577-2017 Ocean Science 13 (2017): 577-587 https://hdl.handle.net/1912/9136 doi:10.5194/os-13-577-2017 Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/ CC-BY Ocean Science 13 (2017): 577-587 doi:10.5194/os-13-577-2017 Article 2017 ftwhoas https://doi.org/10.5194/os-13-577-2017 2022-05-28T22:59:56Z © The Author(s), 2017. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Ocean Science 13 (2017): 577-587, doi:10.5194/os-13-577-2017. Decadal differences in the Falkland Plateau are studied from the two full-depth hydrographic data collected during the ALBATROSS (April 1999) and MOC-Austral (February 2010) cruises. Differences in the upper 100 dbar are due to changes in the seasonal thermocline, as the ALBATROSS cruise took place in the austral fall and the MOC-Austral cruise in summer. The intermediate water masses seem to be very sensitive to the wind conditions existing in their formation area, showing cooling and freshening for the decade as a consequence of a higher Antarctic Intermediate Water (AAIW) contribution and of a decrease in the Subantarctic Mode Water (SAMW) stratum. The deeper layers do not exhibit any significant change in the water mass properties. The Subantarctic Front (SAF) in 1999 is observed at 52.2–54.8° W with a relative mass transport of 32.6 Sv. In contrast, the SAF gets wider in 2010, stretching from 51.1 to 57.2° W (the Falkland Islands), and weakening to 17.9 Sv. Changes in the SAF can be linked with the westerly winds and mainly affect the northward flow of Subantarctic Surface Water (SASW), SAMW and AAIW/Antarctic Surface Water (AASW). The Polar Front (PF) carries 24.9 Sv in 1999 (49.8–44.4° W), while in 2010 (49.9–49.2° W) it narrows and strengthens to 37.3 Sv. This study has been performed thanks to MOC2 (CTM2008-06438-C02-02/MAR) and Sevacan (CTM2013- 48695), financed by the Spanish Government. Article in Journal/Newspaper Antarc* Antarctic Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Antarctic Austral Falkland Plateau ENVELOPE(-50.000,-50.000,-51.000,-51.000) Ocean Science 13 4 577 587 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
description |
© The Author(s), 2017. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Ocean Science 13 (2017): 577-587, doi:10.5194/os-13-577-2017. Decadal differences in the Falkland Plateau are studied from the two full-depth hydrographic data collected during the ALBATROSS (April 1999) and MOC-Austral (February 2010) cruises. Differences in the upper 100 dbar are due to changes in the seasonal thermocline, as the ALBATROSS cruise took place in the austral fall and the MOC-Austral cruise in summer. The intermediate water masses seem to be very sensitive to the wind conditions existing in their formation area, showing cooling and freshening for the decade as a consequence of a higher Antarctic Intermediate Water (AAIW) contribution and of a decrease in the Subantarctic Mode Water (SAMW) stratum. The deeper layers do not exhibit any significant change in the water mass properties. The Subantarctic Front (SAF) in 1999 is observed at 52.2–54.8° W with a relative mass transport of 32.6 Sv. In contrast, the SAF gets wider in 2010, stretching from 51.1 to 57.2° W (the Falkland Islands), and weakening to 17.9 Sv. Changes in the SAF can be linked with the westerly winds and mainly affect the northward flow of Subantarctic Surface Water (SASW), SAMW and AAIW/Antarctic Surface Water (AASW). The Polar Front (PF) carries 24.9 Sv in 1999 (49.8–44.4° W), while in 2010 (49.9–49.2° W) it narrows and strengthens to 37.3 Sv. This study has been performed thanks to MOC2 (CTM2008-06438-C02-02/MAR) and Sevacan (CTM2013- 48695), financed by the Spanish Government. |
format |
Article in Journal/Newspaper |
author |
Perez-Hernandez, M. Dolores Hernández-Guerra, Alonso Comas-Rodríguez, Isis Benítez-Barrios, Verónica M. Fraile-Nuez, Eugenio Pelegrí, Josep Naveira Garabato, Alberto C. |
spellingShingle |
Perez-Hernandez, M. Dolores Hernández-Guerra, Alonso Comas-Rodríguez, Isis Benítez-Barrios, Verónica M. Fraile-Nuez, Eugenio Pelegrí, Josep Naveira Garabato, Alberto C. Differences between 1999 and 2010 across the Falkland Plateau : fronts and water masses |
author_facet |
Perez-Hernandez, M. Dolores Hernández-Guerra, Alonso Comas-Rodríguez, Isis Benítez-Barrios, Verónica M. Fraile-Nuez, Eugenio Pelegrí, Josep Naveira Garabato, Alberto C. |
author_sort |
Perez-Hernandez, M. Dolores |
title |
Differences between 1999 and 2010 across the Falkland Plateau : fronts and water masses |
title_short |
Differences between 1999 and 2010 across the Falkland Plateau : fronts and water masses |
title_full |
Differences between 1999 and 2010 across the Falkland Plateau : fronts and water masses |
title_fullStr |
Differences between 1999 and 2010 across the Falkland Plateau : fronts and water masses |
title_full_unstemmed |
Differences between 1999 and 2010 across the Falkland Plateau : fronts and water masses |
title_sort |
differences between 1999 and 2010 across the falkland plateau : fronts and water masses |
publisher |
Copernicus Publications on behalf of the European Geosciences Union |
publishDate |
2017 |
url |
https://hdl.handle.net/1912/9136 |
long_lat |
ENVELOPE(-50.000,-50.000,-51.000,-51.000) |
geographic |
Antarctic Austral Falkland Plateau |
geographic_facet |
Antarctic Austral Falkland Plateau |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Ocean Science 13 (2017): 577-587 doi:10.5194/os-13-577-2017 |
op_relation |
https://doi.org/10.5194/os-13-577-2017 Ocean Science 13 (2017): 577-587 https://hdl.handle.net/1912/9136 doi:10.5194/os-13-577-2017 |
op_rights |
Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/os-13-577-2017 |
container_title |
Ocean Science |
container_volume |
13 |
container_issue |
4 |
container_start_page |
577 |
op_container_end_page |
587 |
_version_ |
1766249343278383104 |