Multiple thermal fronts near the Patagonian shelf break
Eighteen year (1985-2002) sea surface temperature (SST) data are used to study the intraseasonal variability of the Patagonian shelf break front (SBF) in the SW South Atlantic Ocean between 39° and 44°S. The cross-shelf break SST gradients reveal distinct, previously undocumented thermal fronts loca...
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ftunibueairesbd:paperaa:paper_00948276_v35_n2_p_Franco 2023-05-15T18:21:11+02:00 Multiple thermal fronts near the Patagonian shelf break Franco, B.C. Piola, A.R. Rivas, A.L. Baldoni, A. Pisoni, J.P. 2008 application/pdf https://hdl.handle.net/20.500.12110/paper_00948276_v35_n2_p_Franco eng eng http://hdl.handle.net/20.500.12110/paper_00948276_v35_n2_p_Franco info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar CC-BY Geophys. Res. Lett. 2008;35(2) Atmospheric temperature Climate change Potential flow Topography Vorticity Intraseasonal variability Potential vorticity Sea surface temperature (SST) Oceanography oceanic front sea surface temperature seasonal variation shelf break front temperature gradient Atlantic Ocean Atlantic Ocean (South) Malvinas Current Patagonian Shelf info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion 2008 ftunibueairesbd https://doi.org/20.500.12110/paper_00948276_v35_n2_p_Franco 2023-02-16T01:52:52Z Eighteen year (1985-2002) sea surface temperature (SST) data are used to study the intraseasonal variability of the Patagonian shelf break front (SBF) in the SW South Atlantic Ocean between 39° and 44°S. The cross-shelf break SST gradients reveal distinct, previously undocumented thermal fronts located both, offshore and inshore of the SBF. Throughout the year the main SBF, identified as a band of negative SST gradient maxima (relatively strong offshore temperature decrease), forms a persistent feature located closed to the 200 m isobath, while two distinct negative gradient maxima are located inshore and offshore of this location. Daily SST images reveal the presence of three branches of cold waters whose edges delineate the above mentioned fronts. The two offshore branches closely follow lines of constant potential vorticity (f/h) and appear to be associated with the Malvinas Current, while a third branch, located further onshore, is not steered by the bottom topography. South of 40°S the onshore branch forms a quasi permanent front parallel to the SBF. Copyright 2008 by the American Geophysical Union. Fil:Rivas, A.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pisoni, J.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Article in Journal/Newspaper South Atlantic Ocean Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) Argentina |
institution |
Open Polar |
collection |
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) |
op_collection_id |
ftunibueairesbd |
language |
English |
topic |
Atmospheric temperature Climate change Potential flow Topography Vorticity Intraseasonal variability Potential vorticity Sea surface temperature (SST) Oceanography oceanic front sea surface temperature seasonal variation shelf break front temperature gradient Atlantic Ocean Atlantic Ocean (South) Malvinas Current Patagonian Shelf |
spellingShingle |
Atmospheric temperature Climate change Potential flow Topography Vorticity Intraseasonal variability Potential vorticity Sea surface temperature (SST) Oceanography oceanic front sea surface temperature seasonal variation shelf break front temperature gradient Atlantic Ocean Atlantic Ocean (South) Malvinas Current Patagonian Shelf Franco, B.C. Piola, A.R. Rivas, A.L. Baldoni, A. Pisoni, J.P. Multiple thermal fronts near the Patagonian shelf break |
topic_facet |
Atmospheric temperature Climate change Potential flow Topography Vorticity Intraseasonal variability Potential vorticity Sea surface temperature (SST) Oceanography oceanic front sea surface temperature seasonal variation shelf break front temperature gradient Atlantic Ocean Atlantic Ocean (South) Malvinas Current Patagonian Shelf |
description |
Eighteen year (1985-2002) sea surface temperature (SST) data are used to study the intraseasonal variability of the Patagonian shelf break front (SBF) in the SW South Atlantic Ocean between 39° and 44°S. The cross-shelf break SST gradients reveal distinct, previously undocumented thermal fronts located both, offshore and inshore of the SBF. Throughout the year the main SBF, identified as a band of negative SST gradient maxima (relatively strong offshore temperature decrease), forms a persistent feature located closed to the 200 m isobath, while two distinct negative gradient maxima are located inshore and offshore of this location. Daily SST images reveal the presence of three branches of cold waters whose edges delineate the above mentioned fronts. The two offshore branches closely follow lines of constant potential vorticity (f/h) and appear to be associated with the Malvinas Current, while a third branch, located further onshore, is not steered by the bottom topography. South of 40°S the onshore branch forms a quasi permanent front parallel to the SBF. Copyright 2008 by the American Geophysical Union. Fil:Rivas, A.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pisoni, J.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. |
format |
Article in Journal/Newspaper |
author |
Franco, B.C. Piola, A.R. Rivas, A.L. Baldoni, A. Pisoni, J.P. |
author_facet |
Franco, B.C. Piola, A.R. Rivas, A.L. Baldoni, A. Pisoni, J.P. |
author_sort |
Franco, B.C. |
title |
Multiple thermal fronts near the Patagonian shelf break |
title_short |
Multiple thermal fronts near the Patagonian shelf break |
title_full |
Multiple thermal fronts near the Patagonian shelf break |
title_fullStr |
Multiple thermal fronts near the Patagonian shelf break |
title_full_unstemmed |
Multiple thermal fronts near the Patagonian shelf break |
title_sort |
multiple thermal fronts near the patagonian shelf break |
publishDate |
2008 |
url |
https://hdl.handle.net/20.500.12110/paper_00948276_v35_n2_p_Franco |
geographic |
Argentina |
geographic_facet |
Argentina |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
Geophys. Res. Lett. 2008;35(2) |
op_relation |
http://hdl.handle.net/20.500.12110/paper_00948276_v35_n2_p_Franco |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/20.500.12110/paper_00948276_v35_n2_p_Franco |
_version_ |
1766200316982722560 |