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Un nouveau modèle couplé vagues-courant 3D : développement et validation ArchiMer
Bennis, Anne-claire; Ardhuin, Fabrice; Odaka, Tina; Dumas, Franck.
A numerical model coupling the three-dimensional oceanic circulation, thanks to the MARS3D model, and the sea state computed by the WAVEWATCH III model, is developed in order to study the hydrodynamic of the nearshore zone. The main principle of the coupled model based on the coupler PALM and the necessary modifications made for the coupling procedure to both numerical codes are described. First tests in horizontal two-dimension are made and they allowed us to develop a primary version. For three-dimensional flow, we show that the coupled model must solve the quasi-Eulerian velocity. In fact, a coherent analytical form of the wave forcing for the Lagrangian velocity does not exist. This point is illustrated by one example with large errors in comparison...
Tipo: Text Palavras-chave: Modélisation couplée; Circulation côtière; MARS3D; WAVEWATCH III.; Wave-current modeling; Nearshore zone; MARS3D; WAVEWATCH III.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00286/39707/38162.pdf
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Variability of circulation features in the gulf of lion NW Mediterranean Sea. Importance of inertial currents ArchiMer
Petrenko, Aa.
ADCP data from two cruises, Moogli 2 (June 1998) and Moogli 3 (January 1999), show the variability of the circulation features in the Gulf of Lion, NW Mediterranean Sea. The objective of the present study is to determine whether the hydrodynamic features are due to local forcings or seasonal ones. During both cruises, the Mediterranean Northern Current (NC) is clearly detected along the continental slope and intrudes on the eastern side of the shelf. East of the gulf, its flux is similar to2 Sv both in June and January in opposition to previous literature results. Otherwise, the NC characteristics exhibit usual seasonal differences. During the summer, the NC is wider (35 km), shallower (similar to200 m), and weaker (maximum currents of 40-50 cm s(-1)) than...
Tipo: Text Palavras-chave: Circulation côtière; Oscillations inertielles; Forcages; Coastal circulation; Inertial oscillations; Forcings.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/00321/43261/42992.pdf
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