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Dynamique océanique et transport de la matière particulaire dans le Golfe du Lion : Crue, tempête et période hivernale

Abstract : In situ observations and modelling were combined in order to gain understanding on the physical processes controlling shelf-slope exchanges and to study the effect of waves and currents on the transfer of particulate matter in the Gulf of Lion. This work shows that marine storms induce a cyclonic circulation on the shelf and a downwelling process in the submarine canyons. During the autumnal period, when the water column is stratified and the shelf water is light, the downwelling depth is limited to the upper slope. Conversely, in winter, dense water cascading intensifies the downwelling process. Besides, marine storms are responsible for large resuspension on the whole shelf (> 5 M t) and for a massive exportation at the south-western end of the Gulf. The Cap Creus Canyon clearly appears to be a privileged exportation pathway toward the open sea.
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https://tel.archives-ouvertes.fr/tel-00102656
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Submitted on : Monday, October 2, 2006 - 2:54:56 PM
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Caroline Ulses. Dynamique océanique et transport de la matière particulaire dans le Golfe du Lion : Crue, tempête et période hivernale. Océan, Atmosphère. Université Paul Sabatier - Toulouse III, 2005. Français. ⟨tel-00102656⟩

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