The influence of large-scale circulation, transient and local processes on the seasonal circulation of the Eastern Brazilian Shelf, 13°S

Detalhes bibliográficos
Autor(a) principal: Amorim, F. N.
Data de Publicação: 2012
Outros Autores: Cirano, M., Soares, I. D., Campos, Edmo José Dias, Middleton, John F.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/16569
Resumo: Texto completo: acesso restrito. p. 47–61
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spelling Amorim, F. N.Cirano, M.Soares, I. D.Campos, Edmo José DiasMiddleton, John F.Amorim, F. N.Cirano, M.Soares, I. D.Campos, Edmo José DiasMiddleton, John F.2014-11-11T18:07:49Z20120278-4343http://repositorio.ufba.br/ri/handle/ri/16569v. 32, n. 1Texto completo: acesso restrito. p. 47–61The circulation at the Eastern Brazilian Shelf (EBS), near 13°S, is discussed in terms of the currents and hydrography, associating large-scale circulation, transient and local processes to establish a regional picture of the EBS circulation. The results show that the circulation within the continental shelf and slope region is strongly affected by the seasonal changes in the wind field and meso/large-scale circulation. Transient processes associated to the passage of Cold Front systems or meso-scale activity and the presence of a local canyon add more complexity to the system. During the austral spring and summer seasons, the prevailing upwelling favorable winds blowing from E–NE were responsible for driving southwestward shelf currents. The interaction with the Western Boundary Current (the Brazil Current), especially during summer, was significant and a considerable vertical shear in the velocity field was observed at the outer shelf. The passage of a Cold Front system during the springtime caused a complete reversal of the mean flow and contributed to the deepening of the Mixed Layer Depth (MLD). In addition, the presence of Salvador Canyon, subject to an upwelling favorable boundary current, enhanced the upwelling system, when compared to the upwelling observed at the adjacent shelf. During the austral autumn and winter seasons the prevailing downwelling favorable winds blowing from the SE acted to total reverse the shelf circulation, resulting in a northeastward flow. The passage of a strong Cold Front, during the autumn season, contributed not only to the strengthening of the flow but also to the deepening of the MLD. The presence of the Salvador Canyon, when subject to a downwelling favorable boundary current, caused an intensification of the downwelling process. Interestingly, the alongshore velocity at the shelf region adjacent to the head of the canyon was less affected when compared to the upwelling situation.Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2014-11-03T12:43:57Z No. of bitstreams: 1 F.N. Amorim.pdf: 3219997 bytes, checksum: 8310a91da253d2298e66cee6ab3d0d19 (MD5)Approved for entry into archive by Alda Lima da Silva (sivalda@ufba.br) on 2014-11-11T18:07:49Z (GMT) No. of bitstreams: 1 F.N. Amorim.pdf: 3219997 bytes, checksum: 8310a91da253d2298e66cee6ab3d0d19 (MD5)Made available in DSpace on 2014-11-11T18:07:49Z (GMT). No. of bitstreams: 1 F.N. Amorim.pdf: 3219997 bytes, checksum: 8310a91da253d2298e66cee6ab3d0d19 (MD5) Previous issue date: 2012http://dx.doi.org/ 10.1016/j.csr.2011.10.011reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAShelf currentsWind-driven circulationWestern Boundary CurrentsSouth Equatorial CurrentSalvador CanyonCold Front systemsThe influence of large-scale circulation, transient and local processes on the seasonal circulation of the Eastern Brazilian Shelf, 13°SContinental Shelf Researchinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengORIGINALF.N. Amorim.pdfF.N. Amorim.pdfapplication/pdf3219997https://repositorio.ufba.br/bitstream/ri/16569/1/F.N.%20Amorim.pdf8310a91da253d2298e66cee6ab3d0d19MD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/16569/2/license.txt0d4b811ef71182510d2015daa7c8a900MD52TEXTF.N. Amorim.pdf.txtF.N. 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dc.title.pt_BR.fl_str_mv The influence of large-scale circulation, transient and local processes on the seasonal circulation of the Eastern Brazilian Shelf, 13°S
dc.title.alternative.pt_BR.fl_str_mv Continental Shelf Research
title The influence of large-scale circulation, transient and local processes on the seasonal circulation of the Eastern Brazilian Shelf, 13°S
spellingShingle The influence of large-scale circulation, transient and local processes on the seasonal circulation of the Eastern Brazilian Shelf, 13°S
Amorim, F. N.
Shelf currents
Wind-driven circulation
Western Boundary Currents
South Equatorial Current
Salvador Canyon
Cold Front systems
title_short The influence of large-scale circulation, transient and local processes on the seasonal circulation of the Eastern Brazilian Shelf, 13°S
title_full The influence of large-scale circulation, transient and local processes on the seasonal circulation of the Eastern Brazilian Shelf, 13°S
title_fullStr The influence of large-scale circulation, transient and local processes on the seasonal circulation of the Eastern Brazilian Shelf, 13°S
title_full_unstemmed The influence of large-scale circulation, transient and local processes on the seasonal circulation of the Eastern Brazilian Shelf, 13°S
title_sort The influence of large-scale circulation, transient and local processes on the seasonal circulation of the Eastern Brazilian Shelf, 13°S
author Amorim, F. N.
author_facet Amorim, F. N.
Cirano, M.
Soares, I. D.
Campos, Edmo José Dias
Middleton, John F.
author_role author
author2 Cirano, M.
Soares, I. D.
Campos, Edmo José Dias
Middleton, John F.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Amorim, F. N.
Cirano, M.
Soares, I. D.
Campos, Edmo José Dias
Middleton, John F.
Amorim, F. N.
Cirano, M.
Soares, I. D.
Campos, Edmo José Dias
Middleton, John F.
dc.subject.por.fl_str_mv Shelf currents
Wind-driven circulation
Western Boundary Currents
South Equatorial Current
Salvador Canyon
Cold Front systems
topic Shelf currents
Wind-driven circulation
Western Boundary Currents
South Equatorial Current
Salvador Canyon
Cold Front systems
description Texto completo: acesso restrito. p. 47–61
publishDate 2012
dc.date.issued.fl_str_mv 2012
dc.date.accessioned.fl_str_mv 2014-11-11T18:07:49Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://repositorio.ufba.br/ri/handle/ri/16569
dc.identifier.issn.none.fl_str_mv 0278-4343
dc.identifier.number.pt_BR.fl_str_mv v. 32, n. 1
identifier_str_mv 0278-4343
v. 32, n. 1
url http://repositorio.ufba.br/ri/handle/ri/16569
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.pt_BR.fl_str_mv http://dx.doi.org/ 10.1016/j.csr.2011.10.011
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