Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 4
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
On the zonal distribution of South Atlantic Central Water (SACW) along a section off Cape Blanc, Northwest Africa ArchiMer
Hagen, E; Schemainda, R.
The hypothesis of isopycnal mixing was used in order to calculate the percentages of South Atlantic Central Water (SACW) in proportion to North Atlantic Central Water (NACW) in the intermediate layer between the density surfaces of sigma sub(t) = 26.5 and sigma sub(t) = 27.2 along a zonal section at 20 degree 10'N. In this profile the SACW distribution was "conserved" within an offshore distance of about 370 km from the African coast during two observation periods with a time lag of ten months. The SACW distribution along the section follows from the zonal energy structure of the geostrophic meridional flow within this layer. It is concluded that the intermediate geostrophic meridional motions are adjusted to the local profile of the continental slope H(x).
Tipo: Text
Ano: 1987 URL: http://archimer.ifremer.fr/doc/00267/37847/35928.pdf
Imagem não selecionada

Imprime registro no formato completo
Near-surface structures in the Cape Ghir filament off Morocco ArchiMer
Hagen, E; Zulicke, C; Feistel, R.
A meso-scale CTD survey was conducted off Cape Ghir (31 degrees N) from 29 September to 3 October 1992, with the inspection of mass-field structures in the 300 dbar layer as its main objective, and relatively large tongue of cold surface water as the subject of investigation. This filament of upwelled water extends about 200 km seaward from the coastal zone of Morocco. Our CTD survey included two zonal transects 213 km in length, sampled synchronously by R/Vs Hudson along 31 degrees 30' N and A. v.Humboldt along 30 degrees 30' N. A meridional section followed the shelf edge at 10 degrees 10' W, and five zigzag sections were carried out above the Cape Ghir Plateau (CGP). Data resulting from an extended transect, sampled ten days earlier between 9 degrees...
Tipo: Text Palavras-chave: Coastal upwelling; Filament; Northwest Africa; Water mass; Eddy.
Ano: 1996 URL: http://archimer.ifremer.fr/doc/00096/20728/18365.pdf
Imagem não selecionada

Imprime registro no formato completo
Seasonal and interannual changes in Intense Benguela Upwelling (1982-1999) ArchiMer
Hagen, E; Feistel, R; Agenbag, Jj; Ohde, T.
Monthly maps of remotely sensed sea surface temperatures derived from NOAA/AVHRR thermal images are used to describe changes in 'Intense Benguela Upwelling' during 1982-1999. The coastal area under investigation lies between 9-34degrees S and 8-20degrees E and the total area of cold water between the coast and the course of the 13 degreesC isotherm is considered to be an index of intense, active upwelling. It exhibits a decreasing trend over the study period of 18 years and some evidence for a quasi-cycle of about 27 months. Seasonal cycles are discussed for the total cold water area as well as for its mean alongshore and offshore extents. The main season of cold surface water was found to occur between July and September during the austral winter. It...
Tipo: Text Palavras-chave: Courant de Benguela; Upwelling côtier; Télédétection; Température de surface de la mer; Niño de Benguela; Benguela Current; Coastal upwelling; Remote sensing; Sea surface temperature; Benguela Nino.
Ano: 2001 URL: http://archimer.ifremer.fr/doc/00322/43332/42895.pdf
Imagem não selecionada

Imprime registro no formato completo
Northwest African upwelling scenario ArchiMer
Hagen, E.
Observations, hypotheses and derived scenarios are discussed for the Northwest-African coastal upwelling area. The process of coastal upwelling is considered to be composed of a climatic steady-state part and fluctuations acting on different spatial and temporal scales. Attention is focused on disturbances acting globally on the inter-annual time-scale. EI Nino-like changes occur in the system of trade winds and modify the equatorial regime of currents as well as the coastal upwelling regimes on both flanks of the Inter-tropical Convergence Zone. There is an opposite thermal response in near-surface layers along the zonal coast in the Gulf of Guinea and along the meridional coast off NW-Africa. Off the continental slope of Senegal and Mauritania, the...
Tipo: Text Palavras-chave: Afrique occidentale; Alizé du nord-est; Upwelling côtier; Sous-courant sud-nord; ENSO; Northwest Africa; Northeast trade wind; Coastal upwelling; Poleward undercurrent; ENSO.
Ano: 2001 URL: http://archimer.ifremer.fr/doc/00291/40269/38645.pdf
Registros recuperados: 4
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional