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dc.contributor.author
Frey, Dmitry I.
dc.contributor.author
Piola, Alberto Ricardo
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dc.contributor.author
Morozov, Eugene G.
dc.date.available
2023-12-19T15:28:32Z
dc.date.issued
2023-06
dc.identifier.citation
Frey, Dmitry I.; Piola, Alberto Ricardo; Morozov, Eugene G.; Convergence of the Malvinas Current branches near 44°S; Pergamon-Elsevier Science Ltd; Deep Sea Research Part I: Oceanographic Research Papers; 196; 6-2023; 1-10
dc.identifier.issn
0967-0637
dc.identifier.uri
http://hdl.handle.net/11336/220823
dc.description.abstract
Field measurements of the Malvinas Current (MC) velocity distribution were performed at the western slope of the Argentine Basin in the South Atlantic Ocean between 47° and 43°S including several sections across the current. The data were collected in January and March 2020 using a Shipborne Acoustic Current Doppler Profiler (SADCP) and allowed us to study circulation patterns in the upper 700 m of the ocean. The observations reveal substantial differences in the current structures at each location; the SADCP data suggest that two distinct current branches at 46°S converge downstream near 44°S making it difficult to distinguish the high-velocity cores farther north. A detailed comparison between the velocity structures indicates that the branches converge due to the change in the orientation and width of the continental slope, and is consistent with potential vorticity conservation. At the same time, satellite altimetry shows that the branches merge to a single high-velocity jet, suggesting that satellite altimetry does not reproduce all features of the MC internal structure and indicates the importance of further direct velocity observations in this region. Despite the above-mentioned limitations of altimetry, the satellite-derived geostrophic velocities suggest that the pathways of the MC high-velocity jets are quite stable. In addition, both satellite altimetry and direct measurements indicate that the branches tend to converge downstream near 44°S.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-Elsevier Science Ltd
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ARGENTINE BASIN
dc.subject
MALVINAS CURRENT
dc.subject
OCEAN CIRCULATION
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POTENTIAL VORTICITY
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SATELLITE ALTIMETRY
dc.subject
VELOCITY MEASUREMENTS
dc.subject.classification
Oceanografía, Hidrología, Recursos Hídricos
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Convergence of the Malvinas Current branches near 44°S
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-12-18T16:08:32Z
dc.journal.volume
196
dc.journal.pagination
1-10
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Frey, Dmitry I.. Russian Academy Of Sciences; Rusia. Moscow Institute Of Physics And Technology; Rusia
dc.description.fil
Fil: Piola, Alberto Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval. Departamento Oceanografía; Argentina. Instituto Franco-Argentino sobre Estudios del Clima y sus Impactos; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias de la Atmósfera y los Océanos; Argentina
dc.description.fil
Fil: Morozov, Eugene G.. Moscow Institute Of Physics And Technology; Rusia. Russian Academy Of Sciences; Rusia
dc.journal.title
Deep Sea Research Part I: Oceanographic Research Papers
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0967063723000626
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.dsr.2023.104023
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