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Article Dans Une Revue Comptes Rendus Géoscience Année : 2002

Morphodynamique d'une dune sous-marine du détroit du Pas de Calais

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Résumé

Morphodynamics of an undersea sandwave of the Dover Straits. This paper investigates the dynamics of sandwaves in relationship with tidal currents and weather conditions. The studied sandwaves are located in the Dover Straits and are covered by megaripples. These megaripples have migration speeds of 1 mh−1 and slopes of 34◦, suggesting the potential for avalanches to occur along the flanks of the sandwave. Tidal cycles without reversing currents were observed during stormy weather.Wind-induced currents lead to a unidirectionalmigration of megaripples and sandwaves.Well-defined areas without megaripples were observed and correlated with an increase in sandwave height.We propose interpretations for understanding sandwave saturation and migration
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Dates et versions

hal-00557295 , version 1 (18-01-2011)

Identifiants

Citer

Déborah Idier, Axel Ehrhold, Thierry Garlan. Morphodynamique d'une dune sous-marine du détroit du Pas de Calais. Comptes Rendus Géoscience, 2002, 334 (15), pp.1079-1085. ⟨10.1016/S1631-0713(02)01852-7⟩. ⟨hal-00557295⟩
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