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Artículo

Altimeter-derived seasonal circulation on the southwest Atlantic shelf: 27°?43°S

Strub, P. Ted; James, Corinne; Combes, Vicent; Matano, Ricardo R.; Piola, Alberto RicardoIcon ; Palma, Elbio DanielIcon ; Saraceno, MartinIcon ; Guerrero, Raul A.; Fenco, Harold; Ruiz Etcheverry, Laura AgustinaIcon
Fecha de publicación: 05/2015
Editorial: American Geophysical Union
Revista: Journal Of Geophysical Research
ISSN: 0148-0227
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Oceanografía, Hidrología, Recursos Hídricos

Resumen

Altimeter sea surface height (SSH) fields are analyzed to define and discuss the seasonal circulation over the wide continental shelf in the SW Atlantic Ocean (27°–43°S) during 2001–2012. Seasonal variability is low south of the Rio de la Plata (RdlP), where winds and currents remain equatorward for most of the year. Winds and currents in the central and northern parts of our domain are also equatorward during autumn and winter but reverse to become poleward during spring and summer. Transports of shelf water to the deep ocean are strongest during summer offshore and to the southeast of the RdlP. Details of the flow are discussed using mean monthly seasonal cycles of winds, heights, and currents, along with analyses of Empirical Orthogonal Functions. Principle Estimator Patterns bring out the patterns of wind forcing and ocean response. The largest part of the seasonal variability in SSH signals is due to changes in the wind forcing (described above) and changes in the strong boundary currents that flow along the eastern boundary of the shelf. The rest of the variability contains a smaller component due to heating and expansion of the water column, concentrated in the southern part of the region next to the coast. Our results compare well to previous studies using in situ data and to results from realistic numerical models of the regional circulation.
Palabras clave: Altimeter , Southwest Atlantic Shelf Circulation , Geostrophic Currents
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution 2.5 Unported (CC BY 2.5)
Identificadores
URI: http://hdl.handle.net/11336/7810
URL: http://onlinelibrary.wiley.com/doi/10.1002/2015JC010769/abstract
DOI: http://dx.doi.org/10.1002/2015JC010769
Colecciones
Articulos(CIMA)
Articulos de CENTRO DE INVESTIGACIONES DEL MAR Y LA ATMOSFERA
Articulos(IADO)
Articulos de INST.ARG.DE OCEANOGRAFIA (I)
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Citación
Strub, P. Ted; James, Corinne; Combes, Vicent; Matano, Ricardo R.; Piola, Alberto Ricardo; et al.; Altimeter-derived seasonal circulation on the southwest Atlantic shelf: 27°?43°S; American Geophysical Union; Journal Of Geophysical Research; 120; 5; 5-2015; 3391-3418
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