1. Identificação | |
Tipo de Referência | Artigo em Evento (Conference Proceedings) |
Site | mtc-m12.sid.inpe.br |
Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
Identificador | 6qtX3pFwXQZ3r59YD6/GPBiK |
Repositório | sid.inpe.br/iris@1912/2005/07.21.01.18.17 |
Última Atualização | 2015:11.18.17.39.58 (UTC) marciana |
Repositório de Metadados | sid.inpe.br/iris@1912/2005/07.21.01.18.25 |
Última Atualização dos Metadados | 2018:06.05.00.40.28 (UTC) administrator |
Chave Secundária | INPE-9629-PRE/5245 |
Rótulo | 11380 |
Chave de Citação | ViannaMene:2002:FuEvTr |
Título | Further evidence for a tropical water gyre in the Southwestern Atlantic |
Ano | 2002 |
Data Secundária | 20021019 |
Data de Acesso | 29 mar. 2024 |
Tipo Secundário | PRE CN |
Número de Arquivos | 1 |
Tamanho | 249 KiB |
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2. Contextualização | |
Autor | 1 Vianna, Marcio L. 2 Menezes, Vivian V. de |
Grupo | 1 DSR-INPE-MCT-BR |
Nome do Evento | Simpósio Brasileiro de Oceanografia, 1. |
Localização do Evento | São Paulo |
Data | 26-30 ago. 2002 |
Histórico (UTC) | 2008-06-09 22:17:30 :: administrator -> jefferson :: 2010-07-07 19:06:28 :: jefferson -> administrator :: 2015-05-12 12:15:17 :: administrator -> marciana :: 2002 2015-11-18 17:39:58 :: marciana -> administrator :: 2002 2018-06-05 00:40:28 :: administrator -> marciana :: 2002 |
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3. Conteúdo e estrutura | |
É a matriz ou uma cópia? | é a matriz |
Estágio do Conteúdo | concluido |
Transferível | 1 |
Tipo do Conteúdo | External Contribution |
Tipo de Versão | publisher |
Palavras-Chave | OCEANOGRAFIA |
Resumo | Two views for the gyre structure of the upper layer geostrophic circulation in the southwestern Atlantic Ocean has been presented in the literature: (i)a single gyre, limited in the north at 10S-15S, and in the south by the Brazil-Malvinas confluence, with a recirculation cell centered at 35o S, and (ii)a double-gyre structure, with the northern gyre dominated by a single water mass, the Salinity Maximum Water (SMW), with about the same northern limit, but with its southern limb coinciding with a subtropical front and its associated eastward current at about 28o S. We discuss evidence favoring the double-gyre view, by focusing on analysis of new data (ADCP, hydrographic and Topex/ERS altimeter). Evidence supporting the existence of a strong (50 cm/s)geostrophic eastward current at 28o S, and a Brazil Current upper layer retroflection near this latitude, is described. This eastward current reaches depths of 300m, and its dynamics may be the same as the open-ocean Subtropical Countercurrents of the north Pacific and Atlantic oceans. Transport estimates will be presented. The detailed structure of recirculation cells inside this gyre domain is presented, and its annual cycle described. It is shown that while variability to the east of the gyre domain is dominated by Rossby waves, inside its domain the gyre is dominated by frontal eddies aligned along the 28S-30S quasi-zonal front, by eddies at the shelf break and possibly by open ocean eddies related to subsidence of mixed layer water into the thermocline. The data analysis suggests future research priorities could be oriented into processes that might explain such complex interaction patterns between the atmosphere, the upper water layer, the intermediate layer and the abrupt change in the coastline, not far from the Brazilian coast, but still further into the open ocean than present-day programs. It could require a system of deep sea moorings to study the evolution of the water column, as was done in the FASINEX program in the north Atlantic. We may add that biogeographic studies reporting the discovery of the presence of a strong gradient in zooplankton biodiversity at that same latitude is suggested as consistent with the existence of the countercurrent, which also supports a rich tuna fishery exploited by fishing industry based in the city of Itajaí. |
Área | SRE |
Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Further evidence for... |
Conteúdo da Pasta doc | acessar |
Conteúdo da Pasta source | não têm arquivos |
Conteúdo da Pasta agreement | não têm arquivos |
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4. Condições de acesso e uso | |
URL dos dados | http://urlib.net/ibi/6qtX3pFwXQZ3r59YD6/GPBiK |
URL dos dados zipados | http://urlib.net/zip/6qtX3pFwXQZ3r59YD6/GPBiK |
Arquivo Alvo | vianna.pdf |
Grupo de Usuários | administrator marciana |
Grupo de Leitores | administrator marciana |
Visibilidade | shown |
Permissão de Leitura | allow from all |
Permissão de Atualização | não transferida |
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5. Fontes relacionadas | |
Unidades Imediatamente Superiores | 8JMKD3MGPCW/3ER446E |
Acervo Hospedeiro | sid.inpe.br/banon/2001/04.06.10.52 |
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6. Notas | |
Campos Vazios | affiliation archivingpolicy archivist booktitle callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor electronicmailaddress format isbn issn language lineage mark mirrorrepository nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress resumeid rightsholder schedulinginformation secondarymark serieseditor session shorttitle sponsor subject tertiarymark tertiarytype type url volume |
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7. Controle da descrição | |
e-Mail (login) | marciana |
atualizar | |
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