Differences between 1999 and 2010 across the Falkland Plateau: fronts and water masses
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...
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Online Access: | http://hdl.handle.net/10508/11183 http://hdl.handle.net/10261/318184 https://doi.org/10.5194/os-13-577-2017 |
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ftcsic:oai:digital.csic.es:10261/318184 2024-02-11T09:57:38+01:00 Differences between 1999 and 2010 across the Falkland Plateau: fronts and water masses Pérez-Hernández, María Dolores Hernández-Guerra, Alonso Comas-Rodríguez, Isis Benítez-Barrios, Verónica María Fraile-Nuez, Eugenio Pelegrí-Llopart, José Luis Naveira-Garabato, A.C. 2017-07 http://hdl.handle.net/10508/11183 http://hdl.handle.net/10261/318184 https://doi.org/10.5194/os-13-577-2017 en eng Centro Oceanográfico de Canarias AM Ocean Science, 1. 2017: 1-11 http://hdl.handle.net/10508/11183 http://hdl.handle.net/10261/318184 doi:10.5194/os-13-577-2017 open Centro Oceanográfico de Canarias Medio Marino physical oceanography research article 2017 ftcsic https://doi.org/10.5194/os-13-577-2017 2024-01-16T11:45:03Z 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 MOCAustral 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. SI Article in Journal/Newspaper Antarc* Antarctic Digital.CSIC (Spanish National Research Council) Antarctic Austral Falkland Plateau ENVELOPE(-50.000,-50.000,-51.000,-51.000) Ocean Science 13 4 577 587 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Centro Oceanográfico de Canarias Medio Marino physical oceanography |
spellingShingle |
Centro Oceanográfico de Canarias Medio Marino physical oceanography Pérez-Hernández, María Dolores Hernández-Guerra, Alonso Comas-Rodríguez, Isis Benítez-Barrios, Verónica María Fraile-Nuez, Eugenio Pelegrí-Llopart, José Luis Naveira-Garabato, A.C. Differences between 1999 and 2010 across the Falkland Plateau: fronts and water masses |
topic_facet |
Centro Oceanográfico de Canarias Medio Marino physical oceanography |
description |
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 MOCAustral 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. SI |
format |
Article in Journal/Newspaper |
author |
Pérez-Hernández, María Dolores Hernández-Guerra, Alonso Comas-Rodríguez, Isis Benítez-Barrios, Verónica María Fraile-Nuez, Eugenio Pelegrí-Llopart, José Luis Naveira-Garabato, A.C. |
author_facet |
Pérez-Hernández, María Dolores Hernández-Guerra, Alonso Comas-Rodríguez, Isis Benítez-Barrios, Verónica María Fraile-Nuez, Eugenio Pelegrí-Llopart, José Luis Naveira-Garabato, A.C. |
author_sort |
Pérez-Hernández, María 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 |
publishDate |
2017 |
url |
http://hdl.handle.net/10508/11183 http://hdl.handle.net/10261/318184 https://doi.org/10.5194/os-13-577-2017 |
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_relation |
Centro Oceanográfico de Canarias AM Ocean Science, 1. 2017: 1-11 http://hdl.handle.net/10508/11183 http://hdl.handle.net/10261/318184 doi:10.5194/os-13-577-2017 |
op_rights |
open |
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_ |
1790593176629673984 |