| 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 |
| Repositório | sid.inpe.br/iris@1912/2005/07.21.01.17 |
| Repositório de Metadados | sid.inpe.br/iris@1912/2005/07.21.01.17.09 |
| Última Atualização dos Metadados | 2018:06.05.00.40.28 (UTC) administrator |
| Chave Secundária | INPE-9632-PRE/5248 |
| Rótulo | 11377 |
| Chave de Citação | ViannaMene:2002:CuSeLe |
| Título | Currents and sea level off the Northeast Brazilian coast  |
| Ano | 2002 |
| Data Secundária | 20021019 |
| Data de Acesso | 11 maio 2024 |
| Tipo Secundário | PRE CN |
| 2. Contextualização | |
| Autor | 1 Vianna, Marcio L. 2 Menezes, Viviane 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 22:17:26 :: administrator -> jefferson :: 2010-07-07 19:06:27 :: jefferson -> administrator :: 2018-06-05 00:40:28 :: administrator -> marciana :: 2002 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 1 |
| Tipo do Conteúdo | External Contribution |
| Palavras-Chave | OCEANOGRAFIA |
| Resumo | The region of the North Brazil Current (NBC)Retroflection in the northern hemisphere has been studied since the 80ïs by Johns and collaborators (Johns et al., 1998), who disclosed the importance of the annual cycle, the 25-40 day and 60-90 day oscillations in relation to NBC ring shedding. Upstream, with no rings in the NBC, near Fortaleza, no long-term data was ever published to date. This work describes our effort to study sea level and currents over the NE Brazil shelf in the last 8 years. We deployed and maintained 3 Tide Gauges (TG)at Fortaleza and TERMISA over the northern shelf (3S-4S)and at Tamandaré (8S), and two ADCP bottom moorings, and obtained some time series data kindly given to us by INPH and Petrobrás. There are presently three current meter time series records available: two ADCP moorings (July 2000-March 2001, 20m and 30m depths, 037W)at the mid and outer shelf, and one standard current meter mooring off Paracurú (August 1995-March 1996, 40m isobath, 039W, surface data). Hourly wind station data sets from two stations were also made available to us, one at the coast and one at the offshore site off Paracurú. The ADCP data were studied by EOF analysis, which confirmed the well-known barotropic nature of the observed currents on the continental shelf. The principal component time series were analyzed by Multichannel Singular Spectrum Analysis (MSSA). After removal of tidal signals, the low-frequency signal vector spectra show a dominant spectral peak at 57 day period at both ADCP sites, with currents strongly polarized in the longshore direction. The Paracuru currents, and the contemporaneous TG data, present the same spectral bands as the Johns current meter data. These oscillations are shown to be wind-forced by a complex EOF-MSSA analysis. We also used ERS wind scatterometer data to extend this analysis to the NBC Retroflection area, and obtained similar correlation. The annual and interannual variability study was done by use of the TG data, which was shown to be consistent with our altimeter data described in another work in this Symposium. The study shows that while the annual cycle may be absent south of 4S, which is dominated by a biennial cycle, but it is present north of 4S, with a interannual modulation. This is interpreted as a consequence of the fact that the NBC-NBUC south of 4S has a negligible annual cycle, while the C-SEC has a strong one. It is also shown that large phase differences (time scale of a week)between the annual cycle on sites at relative distances of 200 km may be a consequence of interference patterns of incident and scattered equatorially-trapped Rossby waves by the NE coast. |
| Área | SRE |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Currents and sea... |
| Conteúdo da Pasta doc | não têm arquivos |
| Conteúdo da Pasta source | não têm arquivos |
| Conteúdo da Pasta agreement | não têm arquivos |
| 4. Condições de acesso e uso | |
| Idioma | Pt |
| Grupo de Usuários | administrator |
| Visibilidade | shown |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3ER446E |
| Divulgação | <E> |
| Acervo Hospedeiro | sid.inpe.br/banon/2001/04.06.10.52 |
| 6. Notas | |
| Campos Vazios | affiliation archivingpolicy archivist booktitle callnumber copyholder copyright creatorhistory descriptionlevel documentstage doi e-mailaddress edition editor electronicmailaddress format identifier isbn issn lineage mark mirrorrepository nextedition notes numberoffiles numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress readergroup readpermission resumeid rightsholder schedulinginformation secondarymark serieseditor session shorttitle size sponsor subject targetfile tertiarymark tertiarytype type url versiontype volume |
| 7. Controle da descrição | |
| e-Mail (login) | marciana |
| atualizar | |