Show simple item record Azevedo, José Luiz Lima de Nof, Doron Mata, Mauricio Magalhães 2013-08-21T21:25:43Z 2013-08-21T21:25:43Z 2012
dc.identifier.citation AZEVEDO, José Luiz Lima de; NOF, Doron; MATA, Maurício Magalhães. Eddy Train Encounters with a Continental Boundary: A South Atlantic Case Study. Journal of Physical Oceanography, p. 1-57, 2012. Disponível em:<>. Acesso em: 27 jun. 2012. pt_BR
dc.identifier.issn 1520-0485
dc.identifier.issn 0022-3670
dc.description.abstract Satellite altimetry suggests that large anticyclonic eddies (rings) originating from the Agulhas Current retroflection occasionally make their way across the entire South Atlantic Ocean. What happens when these rings encounter a western boundary current? In this work, interactions between a "train" of nonlinear lens-like eddies and a Southern Hemisphere continental boundary are investigated analytically and numerically on a β plane. The train of eddies is modeled as a steady double-frontal zonal current with the same vorticity and transport as the eddies themselves. The continental boundary is represented by a vertical wall, which is purely meridional in one case and is tilted with respect to the north in another case. It is demonstrated analytically that the eddy–wall encounter produces an equatorward flow parallel to the continental wall, thus suggesting a weakening of the transport of the associated (poleward-flowing) western boundary current upstream of the encounter zone and unchanged transport downstream. A large stationary eddy is established in the contact zone because itsβ-induced force is necessary to balance the other forces along the wall. The size of this edd is directly proportional to the transport of the eddy train and the meridional tilt of the wall. These scenarios are in good agreement with results obtained numerically using an isopycnal Bleck and Boudra model. pt_BR
dc.language.iso eng pt_BR
dc.rights open access pt_BR
dc.title Eddy Train Encounters with a Continental Boundary: A South Atlantic Case Study pt_BR
dc.type article pt_BR

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