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dc.contributor.author
Ruiz Etcheverry, Laura Agustina
dc.contributor.author
Saraceno, Martin
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Piola, Alberto Ricardo
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Strub, P. T.
dc.date.available
2019-12-02T21:14:23Z
dc.date.issued
2016-04
dc.identifier.citation
Ruiz Etcheverry, Laura Agustina; Saraceno, Martin; Piola, Alberto Ricardo; Strub, P. T.; Sea level anomaly on the Patagonian continental shelf: Trends, annual patterns and geostrophic flows; American Geophysical Union; Journal of Geophysical Research: Oceans; 121; 4; 4-2016; 2733-2754
dc.identifier.issn
2169-9291
dc.identifier.uri
http://hdl.handle.net/11336/91141
dc.description.abstract
We study the annual patterns and linear trend of satellite sea level anomaly (SLA) over the southwest South Atlantic continental shelf (SWACS) between 54S and 36S. Results show that south of 42°S the thermal steric effect explains nearly 100% of the annual amplitude of the SLA, while north of 42°S it explains less than 60%. This difference is due to the halosteric contribution. The annual wind variability plays a minor role over the whole continental shelf. The temporal linear trend in SLA ranges between 1 and 5 mm/yr (95% confidence level). The largest linear trends are found north of 39°S, at 42°S and at 50°S. We propose that in the northern region the large positive linear trends are associated with local changes in the density field caused by advective effects in response to a southward displacement of the South Atlantic High. The causes of the relative large SLA trends in two southern coastal regions are discussed as a function meridional wind stress and river discharge. Finally, we combined the annual cycle of SLA with the mean dynamic topography to estimate the absolute geostrophic velocities. This approach provides the first comprehensive description of the seasonal component of SWACS circulation based on satellite observations. The general circulation of the SWACS is northeastward with stronger/weaker geostrophic currents in austral summer/winter. At all latitudes, geostrophic velocities are larger (up to 20 cm/s) close to the shelf-break and decrease toward the coast. This spatio-temporal pattern is more intense north of 45°S.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Geophysical Union
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Sea level anomaly
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Ocean circulation
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Patagonia
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Seasonal variability
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Oceanografía, Hidrología, Recursos Hídricos
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Sea level anomaly on the Patagonian continental shelf: Trends, annual patterns and geostrophic flows
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-11-26T19:58:23Z
dc.journal.volume
121
dc.journal.number
4
dc.journal.pagination
2733-2754
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Washington, D.C.
dc.description.fil
Fil: Ruiz Etcheverry, Laura Agustina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias de la Atmósfera y los Océanos; Argentina. University of Hawaii at Manoa; Estados Unidos
dc.description.fil
Fil: Saraceno, Martin. Universidad de Buenos Aires; Argentina. Instituto Franco Argentino para el Estudio del Clima y sus Impactos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina
dc.description.fil
Fil: Piola, Alberto Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval; Argentina
dc.description.fil
Fil: Strub, P. T.. State University of Oregon; Estados Unidos
dc.journal.title
Journal of Geophysical Research: Oceans
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://agupubs.onlinelibrary.wiley.com/agu/jgr/journal/10.1002/%28ISSN%292169-9291/
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/2015JC011265
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