Consulta: subjectFacets:"Courant de marée"
Registros recuperados: 4
Data/hora: 13/06/2024 02:30:30

Variation of the tidal properties around Gran Canaria
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Martinez, A; Perez, E; Bruno, M.
Analysis of water level and current meter series from different locations on the island shelf of Gran Canaria reveals strong variations in tidal properties. Semidiurnal sea level amplitudes agree with the results obtained from global tidal models for this region only on the northern coast of the island, while they decrease towards the southwest (10 cm difference for the M-2 constituent). Semidiurnal currents present maxima at the southeastern and northwestern extremities of the island (30-40 cm s(-1) for M-2) and minima in the north-northeast and southwest (3-6 cm s(-1) for M-2), showing simultaneous strong changes in the phase. Diurnal levels and currents display smaller variations than the semidiurnal band. The behaviour of semidiurnal constituents is...
Tipo: Text
Palavras-chave: Marée; Courant de marée; Île; Modélisation numérique; Îles Canaries; Tide; Tidal current; Island; Numerical modelling; Canary Islands.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00325/43625/43258.pdf

Evolution morphodynamique cross-shore d’un estran vaseux
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Monbet, Valerie; Maisondieu, Christophe; Le Hir, Pierre.
The main goal of this study consists in evaluating the combined effect of cross-shore waves and current on the long term evolution of a mud flat profile. An original method is used to create a database of realistic wind fields and sea states. These data are applied to a numerical model of sediment transport and morphological changes. A description of long term simulations is proposed.
Tipo: Text
Palavras-chave: Morphodynamique; Estran vaseux; Courant de marée; États de mer; Mer du vent.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/00203/31429/29824.pdf

Caractérisation biologique et variation des captures de la grande alose (Alosa alosa) par unité d'effort sur le fleuve Adour (Pyrénées Atlantiques, France)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Prouzet, Patrick; Martinet, Jean-pierre; Badia, Jacques.
The study of logbooks from commercial fishermen on the Adour River and commercial samples allowed characterization of the allis shad population (Alosa alosa L.) caught during the period 1988-91. A better knowledge of the influence of hydroclimatic factors (rate of river flow and intensity of tidal coefficient) on the catchability of the species in that never was also obtained. Allis shad are mainly recruited to this fishery from the beginning of April to the end of May: between 78 and 89 % depending on year. Males in the population were on average younger than females. However, at the same age, males were significantly smaller in size and in weight than females. These results reinforce the knowledge already obtained on French stocks in the Loire and...
Tipo: Text
Palavras-chave: Alosa alosa; Grande alose ou alose vraie; Clupéidés; Captures; Stock; Pêche; Âge; Débit fluvial; Courant de marée; Atlantique; Alosa alosa; Allis shad; Clupeidae; Catch; Fishing effort; Stock assessment; Age composition; Flow and tidal currents; Atlantic.
Ano: 1994
URL: http://archimer.ifremer.fr/doc/00188/29891/28336.pdf

Vertical structure of the semidiurnal tidal currents at Camarinal Sill, the strait of Gibraltar
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bruno, M; Mananes, R; Alonso, Jj; Izquierdo, A; Tejedor, L; Kagan, Ba.
The dynamical mode decomposition (DMD) technique is applied to the data of currentmeter and CTD measurements taken during the 1985-1986 Gibraltar Experiment and the 1989 survey so as to clarify features of the vertical structure of the M(2) and S(2) tidal currents at the Camarinal Sill. It is shown that in conformity with the inference made on the basis of the empirical orthogonal function (EOF) decomposition technique, these currents are mainly due to the M(2) and S(2) barotropic modes. At the same time the first three baroclinic modes are responsible not only for the vertical variability of the tidal currents but also for the velocity acid density amplitude variances at semidiurnal frequencies. Certain quantitative discrepancies between the values of...
Tipo: Text
Palavras-chave: Modes barotrope et barocline; Courant de marée; Décomposition en mode dynamique; Détroit de Gibraltar; Barotropic and baroclinic modes; Tidal current; Dynamical mode decomposition; Strait of Gibraltar.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/00325/43574/44042.pdf