Franco, B.C.; Piola, A.R.; Rivas, A.L.; Baldoni, A.; Pisoni, J.P. "Multiple thermal fronts near the Patagonian shelf break" (2008) Geophysical Research Letters. 35(2)
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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.


Documento: Artículo
Título:Multiple thermal fronts near the Patagonian shelf break
Autor:Franco, B.C.; Piola, A.R.; Rivas, A.L.; Baldoni, A.; Pisoni, J.P.
Filiación:Departamento Oceanografía, Servicio de Hidrografía Naval (SHN), Av. Montes de Oca 2124, Buenos Aires C1270ABV, Argentina
Departamento de Ciencias de la Atmósfera y los Océanos, FCEyN, Universidad de Buenos Aires, Buenos Aires, Argentina
Centro Nacional Patagónico (CENPAT), CONICET, Boulevard Brown s/n, Puerto Madryn 9120, Argentina
Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia, Puerto Madryn, Argentina
Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Paseo V. Ocampo No. 1, Mar del Plata B7602HSA, Argentina
Palabras clave: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
Título revista:Geophysical Research Letters
Título revista abreviado:Geophys. Res. Lett.


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---------- APA ----------
Franco, B.C., Piola, A.R., Rivas, A.L., Baldoni, A. & Pisoni, J.P. (2008) . Multiple thermal fronts near the Patagonian shelf break. Geophysical Research Letters, 35(2).
---------- CHICAGO ----------
Franco, B.C., Piola, A.R., Rivas, A.L., Baldoni, A., Pisoni, J.P. "Multiple thermal fronts near the Patagonian shelf break" . Geophysical Research Letters 35, no. 2 (2008).
---------- MLA ----------
Franco, B.C., Piola, A.R., Rivas, A.L., Baldoni, A., Pisoni, J.P. "Multiple thermal fronts near the Patagonian shelf break" . Geophysical Research Letters, vol. 35, no. 2, 2008.
---------- VANCOUVER ----------
Franco, B.C., Piola, A.R., Rivas, A.L., Baldoni, A., Pisoni, J.P. Multiple thermal fronts near the Patagonian shelf break. Geophys. Res. Lett. 2008;35(2).