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Franco, B.C.; Palma, E.D.; Combes, V.; Acha, E.M.; Saraceno, M. "Modeling the Offshore Export of Subantarctic Shelf Waters From the Patagonian Shelf" (2018) Journal of Geophysical Research: Oceans. 123(7):4491-4502
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Abstract:

It has been suggested that the Subtropical Shelf Front (STSF) could be a preferential site for the detrainment of Subantarctic Shelf Water (SASW) and related planktonic shelf species onto the open SW Atlantic Ocean. The offshore detrainment of SASW and planktonic shelf species might be an exportation mechanism, affecting the population abundances of fishing resources in Argentina, Uruguay, and Southern Brazil. In this study, we characterize for the first time the 3-D structure of the STSF and the main routes of offshore export of SASW from the Patagonian shelf during austral summer (summer and early fall) and winter (winter and early spring) by using numerical hydrodynamical model results and Lagrangian tracking simulations of neutrally buoyant floats. The transport of SASW toward the open ocean is ~1 Sv (1 Sv = 106 m3/s) during summer and ~0.8 Sv during winter. SASW are exported offshore mainly near the Brazil-Malvinas Confluence region during both seasons. The STSF appears to act as an important retention mechanism for the plankton over the inner and middle shelf mainly during late summer and early fall. Our findings could explain the life cycle of distinct fish species that are distributed in the region, as well as the population abundance variability of such species. ©2018. American Geophysical Union. All Rights Reserved.

Registro:

Documento: Artículo
Título:Modeling the Offshore Export of Subantarctic Shelf Waters From the Patagonian Shelf
Autor:Franco, B.C.; Palma, E.D.; Combes, V.; Acha, E.M.; Saraceno, M.
Filiación:Centro de Investigaciones del Mar y la Atmósfera (CIMA)/CONICET-UBA, UMI-IFAECI/CNRS, Buenos Aires, Argentina
Departamento de Física, Universidad Nacional del Sur, Bahía Blanca, Argentina
Instituto Argentino de Oceanografía (IADO) (CONICET-UNS), Bahía Blanca, Argentina
College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States
Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Mar del Plata, Argentina
Instituto de Investigaciones Marinas y Costeras (IIMyC) (CONICET-UNMdP), Mar del Plata, Argentina
Departamento de Ciencias de la Atmósfera y los Océanos (DCAO), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Palabras clave:Brazil-Malvinas Confluence; offshore detrainment; Subantarctic Shelf Waters; Subtropical Shelf Front; SW Atlantic Ocean; abundance; hydrodynamics; Lagrangian analysis; numerical model; offshore application; open ocean; seasonality; shelf dynamics; simulation; subtropical region; Argentina; Atlantic Ocean; Brazil; Brazil-Malvinas Confluence; Patagonian Shelf; Uruguay
Año:2018
Volumen:123
Número:7
Página de inicio:4491
Página de fin:4502
DOI: http://dx.doi.org/10.1029/2018JC013824
Título revista:Journal of Geophysical Research: Oceans
Título revista abreviado:J. Geophys. Res. Oceans
ISSN:21699275
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_21699275_v123_n7_p4491_Franco

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Citas:

---------- APA ----------
Franco, B.C., Palma, E.D., Combes, V., Acha, E.M. & Saraceno, M. (2018) . Modeling the Offshore Export of Subantarctic Shelf Waters From the Patagonian Shelf. Journal of Geophysical Research: Oceans, 123(7), 4491-4502.
http://dx.doi.org/10.1029/2018JC013824
---------- CHICAGO ----------
Franco, B.C., Palma, E.D., Combes, V., Acha, E.M., Saraceno, M. "Modeling the Offshore Export of Subantarctic Shelf Waters From the Patagonian Shelf" . Journal of Geophysical Research: Oceans 123, no. 7 (2018) : 4491-4502.
http://dx.doi.org/10.1029/2018JC013824
---------- MLA ----------
Franco, B.C., Palma, E.D., Combes, V., Acha, E.M., Saraceno, M. "Modeling the Offshore Export of Subantarctic Shelf Waters From the Patagonian Shelf" . Journal of Geophysical Research: Oceans, vol. 123, no. 7, 2018, pp. 4491-4502.
http://dx.doi.org/10.1029/2018JC013824
---------- VANCOUVER ----------
Franco, B.C., Palma, E.D., Combes, V., Acha, E.M., Saraceno, M. Modeling the Offshore Export of Subantarctic Shelf Waters From the Patagonian Shelf. J. Geophys. Res. Oceans. 2018;123(7):4491-4502.
http://dx.doi.org/10.1029/2018JC013824