| 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/GPBgT |
| Repositório | sid.inpe.br/iris@1912/2005/07.21.01.16.39 |
| Última Atualização | 2015:11.18.17.44.53 (UTC) marciana |
| Repositório de Metadados | sid.inpe.br/iris@1912/2005/07.21.01.16.46 |
| Última Atualização dos Metadados | 2018:06.05.00.40.28 (UTC) administrator |
| Chave Secundária | INPE-9633-PRE/5249 |
| Rótulo | 11376 |
| Chave de Citação | ViannaMene:2002:CrGeAp |
| Título | Cross-equatorial geostrophic approximations  |
| Ano | 2002 |
| Data Secundária | 20021019 |
| Data de Acesso | 11 maio 2024 |
| Tipo Secundário | PRE CN |
| Número de Arquivos | 1 |
| Tamanho | 70 KiB |
| 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 22:17:25 :: administrator -> jefferson :: 2010-07-07 19:06:27 :: jefferson -> administrator :: 2015-05-12 12:15:17 :: administrator -> marciana :: 2002 2015-11-18 17:44:53 :: marciana -> administrator :: 2002 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 | A new formula for steady geostrophic zonal equatorial currents is derived from a nonlinear shallow water equation formulation. It is shown that upper layer zonal geostrophic currents may be obtained from a root of a single cubic equation involving sea surface slopes and curvatures. The estimate is continuous across the Equator, and connects smoothly the f-plane off equator and the beta plane equatorial geostrophic formula based on meridional curvature. This approximation is tested by use of CTD-derived data over the ship track and satellite-derived surface topography to estimate synoptic currents, which are shown to compare well with ETAMBOT cruise ship-mounted ADCP current data spanning the Equatorial western Atlantic at the top of the thermocline. Validation tests are also made for cross-equatorial cruise data in the Pacific Ocean at 110W, with very good results. The regularization of the equatorial singularity for meridional component is then presented. This theoretically-based methodology is much simpler and more general than recently published ad-hoc fits between off-Equator and Taylor-expanded second meridional derivative formulas (e.g., Lagerloef et al., 1999). The method is interesting for the study of the short meridional scale geostrophic flow convergence into the Equatorial Undercurrent by use of altimeter-derived sea surface topography. Circulation patterns presented by Bourlès et al. (1999)and Arnault et al. (1999)off the Equator, the latter calculated by use of Topex/Poseidon Sea Surface Height Anomaly data, are consistent with the more complete pictures obtained in the present work. The method is then applied to estimate the Ekman contribution to these currents, which constitute the larger part of the ageostrophic currents. This is done by use of ERS scatterometer wind data. |
| Área | SRE |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Cross-equatorial geostrophic approximations |
| Conteúdo da Pasta doc | acessar |
| Conteúdo da Pasta source | não têm arquivos |
| Conteúdo da Pasta agreement | não têm arquivos |
| 4. Condições de acesso e uso | |
| URL dos dados | http://urlib.net/ibi/6qtX3pFwXQZ3r59YD6/GPBgT |
| URL dos dados zipados | http://urlib.net/zip/6qtX3pFwXQZ3r59YD6/GPBgT |
| Arquivo Alvo | vianna2.pdf |
| Grupo de Usuários | administrator marciana |
| Grupo de Leitores | administrator marciana |
| Visibilidade | shown |
| Permissão de Leitura | allow from all |
| Permissão de Atualização | não transferida |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3ER446E |
| Acervo Hospedeiro | sid.inpe.br/banon/2001/04.06.10.52 |
| 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 versiontype volume |
| 7. Controle da descrição | |
| e-Mail (login) | marciana |
| atualizar | |