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...
Published in: | Ocean Science |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2017
|
Subjects: | |
Online Access: | https://eprints.soton.ac.uk/413245/ https://eprints.soton.ac.uk/413245/1/os_13_577_2017.pdf |
id |
ftsouthampton:oai:eprints.soton.ac.uk:413245 |
---|---|
record_format |
openpolar |
spelling |
ftsouthampton:oai:eprints.soton.ac.uk:413245 2023-07-30T03:58:38+02:00 Differences between 1999 and 2010 across the Falkland Plateau: fronts and water masses Pérez-Hernández, M. Dolores Hernández-Guerra, Alonso Comas-Rodríguez, Isis Benítez-Barrios, Verónica M. Fraile-Nuez, Eugenio Pelegrí, Josep L. Naveira Garabato, Alberto C. 2017-07-07 text https://eprints.soton.ac.uk/413245/ https://eprints.soton.ac.uk/413245/1/os_13_577_2017.pdf en English eng https://eprints.soton.ac.uk/413245/1/os_13_577_2017.pdf Pérez-Hernández, M. Dolores, Hernández-Guerra, Alonso, Comas-Rodríguez, Isis, Benítez-Barrios, Verónica M., Fraile-Nuez, Eugenio, Pelegrí, Josep L. and Naveira Garabato, Alberto C. (2017) Differences between 1999 and 2010 across the Falkland Plateau: fronts and water masses. Ocean Science, 13 (4), 577-587. (doi:10.5194/os-13-577-2017 <http://dx.doi.org/10.5194/os-13-577-2017>). cc_by_4 Article PeerReviewed 2017 ftsouthampton https://doi.org/10.5194/os-13-577-2017 2023-07-09T22:17:08Z 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. Article in Journal/Newspaper Antarc* Antarctic University of Southampton: e-Prints Soton Antarctic Austral Falkland Plateau ENVELOPE(-50.000,-50.000,-51.000,-51.000) Ocean Science 13 4 577 587 |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
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 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. |
format |
Article in Journal/Newspaper |
author |
Pérez-Hernández, M. Dolores Hernández-Guerra, Alonso Comas-Rodríguez, Isis Benítez-Barrios, Verónica M. Fraile-Nuez, Eugenio Pelegrí, Josep L. Naveira Garabato, Alberto C. |
spellingShingle |
Pérez-Hernández, M. Dolores Hernández-Guerra, Alonso Comas-Rodríguez, Isis Benítez-Barrios, Verónica M. Fraile-Nuez, Eugenio Pelegrí, Josep L. Naveira Garabato, Alberto C. Differences between 1999 and 2010 across the Falkland Plateau: fronts and water masses |
author_facet |
Pérez-Hernández, M. Dolores Hernández-Guerra, Alonso Comas-Rodríguez, Isis Benítez-Barrios, Verónica M. Fraile-Nuez, Eugenio Pelegrí, Josep L. Naveira Garabato, Alberto C. |
author_sort |
Pérez-Hernández, 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 |
publishDate |
2017 |
url |
https://eprints.soton.ac.uk/413245/ https://eprints.soton.ac.uk/413245/1/os_13_577_2017.pdf |
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 |
https://eprints.soton.ac.uk/413245/1/os_13_577_2017.pdf Pérez-Hernández, M. Dolores, Hernández-Guerra, Alonso, Comas-Rodríguez, Isis, Benítez-Barrios, Verónica M., Fraile-Nuez, Eugenio, Pelegrí, Josep L. and Naveira Garabato, Alberto C. (2017) Differences between 1999 and 2010 across the Falkland Plateau: fronts and water masses. Ocean Science, 13 (4), 577-587. (doi:10.5194/os-13-577-2017 <http://dx.doi.org/10.5194/os-13-577-2017>). |
op_rights |
cc_by_4 |
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_ |
1772821395047186432 |