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dc.contributor.authorZhang, Yu  Concept link
dc.contributor.authorPedlosky, Joseph  Concept link
dc.contributor.authorFlierl, Glenn R.  Concept link
dc.date.accessioned2011-06-22T14:09:10Z
dc.date.available2011-11-01T08:28:29Z
dc.date.issued2011-05
dc.identifier.citationJournal of Physical Oceanography 41 (2011): 889–910en_US
dc.identifier.urihttps://hdl.handle.net/1912/4646
dc.descriptionAuthor Posting. © American Meteorological Society, 2011. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 41 (2011): 889–910, doi:10.1175/2010JPO4496.1.en_US
dc.description.abstractThis paper examines interaction between a barotropic point vortex and a steplike topography with a bay-shaped shelf. The interaction is governed by two mechanisms: propagation of topographic Rossby waves and advection by the forcing vortex. Topographic waves are supported by the potential vorticity (PV) jump across the topography and propagate along the step only in one direction, having higher PV on the right. Near one side boundary of the bay, which is in the wave propagation direction and has a narrow shelf, waves are blocked by the boundary, inducing strong out-of-bay transport in the form of detached crests. The wave–boundary interaction as well as out-of-bay transport is strengthened as the minimum shelf width is decreased. The two control mechanisms are related differently in anticyclone- and cyclone-induced interactions. In anticyclone-induced interactions, the PV front deformations are moved in opposite directions by the point vortex and topographic waves; a topographic cyclone forms out of the balance between the two opposing mechanisms and is advected by the forcing vortex into the deep ocean. In cyclone-induced interactions, the PV front deformations are moved in the same direction by the two mechanisms; a topographic cyclone forms out of the wave–boundary interaction but is confined to the coast. Therefore, anticyclonic vortices are more capable of driving water off the topography. The anticyclone-induced transport is enhanced for smaller vortex–step distance or smaller topography when the vortex advection is relatively strong compared to the wave propagation mechanism.en_US
dc.description.sponsorshipY. Zhang acknowledges the support of theMIT-WHOI Joint Programin Physical Oceanography, NSF OCE-9901654 and OCE-0451086. J. Pedlosky acknowledges the support of NSF OCE- 9901654 and OCE-0451086.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherAmerican Meteorological Societyen_US
dc.relation.urihttps://doi.org/10.1175/2010JPO4496.1
dc.subjectTransporten_US
dc.subjectEddiesen_US
dc.subjectBarotropic flowen_US
dc.subjectTopographic effectsen_US
dc.subjectVorticesen_US
dc.subjectCurrentsen_US
dc.subjectPotential vorticityen_US
dc.subjectRossby wavesen_US
dc.titleShelf circulation and cross-shelf transport out of a bay driven by eddies from an open-ocean current. Part I : interaction between a barotropic vortex and a steplike topographyen_US
dc.typeArticleen_US
dc.identifier.doi10.1175/2010JPO4496.1


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