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	Provedor de dados ArchiMer (3) RChHN (1) Autor Guiavarc'H, Catherine (1) Guiavarch, Catherine (1) Kersale, M. (1) Lathuiliere, C. (1) Lazure, Pascal (1) Le Boyer, A. (1) Le Cann, B. (1) MONTECINO,VIVIAN (1) Marie, Louis (1) PAOLINI,PEDRO (1) PAREDES,M. ALEJANDRA (1) RUTLLANT,JOSÉ (1) Rubio, A. (1) Serpette, A. (1) Treguier, Anne-marie (1) Vangriesheim, Annick (1) Mais... Palavra-chave Coastal trapped waves (4) Gulf of Guinea (2) ADCP (1) Bay of Biscay (1) Biweekly oscillations (1) Coastal jets (1) Coastal upwelling (1) Courant profond (1) Deep current (1) Equatorial waves (1) Golfe de Guinée (1) Modélisation numérique (1) Numerical modeling (1) Numerical modelling (1) Ondes piégées à la côte (1) Ondes équatoriales (1) Oscillations bimensuelles (1) Phytoplankton biomass (1) Shelf circulation (1) Wind forcing (1) Mais... Tipo do documento Text (3) Journal article (1) Ano 2016 (1) 2008 (1) 2007 (1) 2006 (1) País France (3) Chile (1) Idioma Inglês (3) Francês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Modélisation haute-résolution des courants dans le Golfe de Guinée : Etude des oscillations bimensuelles. ArchiMer Guiavarch, Catherine. Currentmeter measurements on the continental slope of the Gulf of Guinea (near 7°40 S) point out a biweekly oscillation of the currents, bottom intensified and oriented along the bathymetry. Those energetic oscillations dominate the signal. A three-dimensional high-resolution primitive equation model (NEMO/OPA) of the Gulf of Guinea has been developed to study the oscillations and their forcing mechanism. The data does not support the tide as a forcing mechanism and the wind-forced regional model reproduces biweekly oscillations, which fit the data quite well. Experiments with different forcings have been run to explore the origin of the biweekly variability. Those experiments highlight the equatorial origin of the oscillations forced by equatorial... Tipo: Text Palavras-chave: Deep current; Biweekly oscillations; Equatorial waves; Coastal trapped waves; Gulf of Guinea; Numerical modelling; Courant profond; Oscillations bimensuelles; Ondes équatoriales; Ondes piégées à la côte; Golfe de Guinée; Modélisation numérique. Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/these-3647.pdf Poleward along-shore current pulses on the inner shelf of the Bay of Biscay ArchiMer Kersale, M.; Marie, Louis; Le Cann, B.; Serpette, A.; Lathuiliere, C.; Le Boyer, A.; Rubio, A.; Lazure, Pascal. We analyzed strong events of coastal poleward along-shore currents above 10 cm s−1 and up to more than 50 cm s−1 on the inner shelf (50-80 m depth) of the Bay of Biscay (BoB) from the Spanish coast to the Brittany coast. We used data from four acoustic Doppler current profilers (ADCPs) deployed from July 2009 to August 2011. The goal of this study was to analyze current variability at meso- and subinertial scales and their generation mechanisms. These currents occurred all year long and were classified into three types. Events occurring principally in the southern part of the BoB were classified as southern events. Bay-scale events were defined when strong poleward currents were detected over all the shelf, typically stronger on the Spanish and the... Tipo: Text Palavras-chave: Coastal jets; ADCP; Shelf circulation; Wind forcing; Coastal trapped waves; Bay of Biscay. Ano: 2016 URL: http://archimer.ifremer.fr/doc/00299/40984/40075.pdf Remotely forced biweekly deep oscillations on the continental slope of the Gulf of Guinea ArchiMer Guiavarc'H, Catherine; Treguier, Anne-marie; Vangriesheim, Annick. Current meter measurements on the continental slope of the Gulf of Guinea (at 7 degrees 20'S and 1300 m depth) have revealed biweekly oscillations of the currents, bottom intensified and oriented along the bathymetry. We develop a three-dimensional primitive equation model of the Gulf of Guinea to study the oscillations and their forcing mechanism. The high resolution (1/12 degrees) regional model reproduces remarkably well the main characteristics of the deep currents on the continental slope. Experiments with different forcings demonstrate that the biweekly variability at 1300 m depth is remotely forced by equatorial winds. Deep Yanai waves generated by the wind propagate eastward along the equator. Upon reaching the African coast, the energy propagates... Tipo: Text Palavras-chave: Gulf of Guinea; Numerical modeling; Coastal trapped waves. Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-4476.pdf Revisiting chlorophyll data along the coast in north-central Chile, considering multiscale environmental variability RChHN MONTECINO,VIVIAN; PAREDES,M. ALEJANDRA; PAOLINI,PEDRO; RUTLLANT,JOSÉ. Phytoplankton abundance in the surface mixed layer of the coastal ocean responds to environmental changes at various time scales. Here the "warm", "cold" and "neutral" phases of "three environmental cycles" have been jointly considered to assess chlorophyll-a (Chl-a) biomass variability for both the active and relaxed phases of the local, wind-driven coastal upwelling: (i) the interannual ENSO cycle (ii) the annual (seasonal) cycle and (iii) the intraseasonal cycle associated with equatorially-sourced, ocean trapped-waves along the coast in northern Chile. The main goal of this study is to quantitatively assess the variability of the depth- integrated Chl-a biomass in the euphotic zone (¾Chl-a) in terms of an overall "environmental condition" over a 50 km... Tipo: Journal article Palavras-chave: Coastal trapped waves; Coastal upwelling; Phytoplankton biomass. Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2006000200007 Registros recuperados: 4 Primeira ... 1 ... Última

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