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dc.contributor.author
Pereira Brandini, Frederico
dc.contributor.author
Boltovskoy, Demetrio
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dc.contributor.author
Piola, Alberto Ricardo
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dc.contributor.author
Kocmur, Santiago
dc.contributor.author
Röttgers, Rüdiger
dc.contributor.author
Cesar Abreu, Paulo
dc.contributor.author
Mendes Lopes, Rubens
dc.date.available
2019-03-14T20:05:22Z
dc.date.issued
2000-06
dc.identifier.citation
Pereira Brandini, Frederico; Boltovskoy, Demetrio; Piola, Alberto Ricardo; Kocmur, Santiago; Röttgers, Rüdiger; et al.; Multiannual trends in fronts and distribution of nutrients and chlorophyll in the southwestern Atlantic (30-62°S); Pergamon-Elsevier Science Ltd; Deep Sea Research Part I: Oceanographic Research Papers; 47; 6; 6-2000; 1015-1033
dc.identifier.issn
0967-0637
dc.identifier.uri
http://hdl.handle.net/11336/71703
dc.description.abstract
This paper presents the first data on the vertical distribution of chlorophyll and nutrients in the upper layers of the southern southwestern Atlantic and interprets it in relation to frontal systems and the general hydrographic features. The survey covered quasi-synoptically the area between 30 and 62°S, at the beginning of the austral summers of three consecutive years (1993 through 1995). Our results show a rather consistent oceanographic structure, with similar patterns of chlorophyll and nutrient distributions with latitude. Outstanding features present throughout the three seasons are two zones of high phytoplankton production, where chlorophyll concentrations of > 1 μg/l seem to occur frequently. The first is the upper euphotic zone of the Brazil-Malvinas Confluence Zone between approximately 36 and 50°S. The second is centered on subsurface layers of the Antarctic Surface Water south of the Polar Front as far as 62°S. The rest of the area covered shows low chlorophyll concentrations (< 0.4 μg/l), due either to nutrient limitation in the oligotrophic subtropical waters of the Brazil Current or to excessive turbulence and upper-layer instability in the energetic Malvinas Current. The occurrence of a permanent meander around 38°S coincided with the cyclonic retroflexion of the Malvinas Current, causing upwelling of deep water. The ecological implications of this eddy-induced upwelling are discussed. (C) 2000 Elsevier Science Ltd.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-Elsevier Science Ltd
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Brazil-Malvinas Confluence Zone
dc.subject
Chlorophyll
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Nutrients
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Polar Front
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Southwestern Atlantic
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Thermal Fronts
dc.subject.classification
Meteorología y Ciencias Atmosféricas
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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
Multiannual trends in fronts and distribution of nutrients and chlorophyll in the southwestern Atlantic (30-62°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
2019-03-14T14:12:11Z
dc.journal.volume
47
dc.journal.number
6
dc.journal.pagination
1015-1033
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Pereira Brandini, Frederico. Universidade Federal do Paraná; Brasil
dc.description.fil
Fil: Boltovskoy, Demetrio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
dc.description.fil
Fil: Piola, Alberto Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias de la Atmósfera y los Océanos; Argentina
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Fil: Kocmur, Santiago. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
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Fil: Röttgers, Rüdiger. Alfred Wegener Institute for Polar and Marine Research; Alemania
dc.description.fil
Fil: Cesar Abreu, Paulo. Fundação Universidade do Rio Grande; Brasil
dc.description.fil
Fil: Mendes Lopes, Rubens. Universidade Federal do Paraná; Brasil
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/S0967063799000758
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/S0967-0637(99)00075-8
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