Wave-induced cross-shore sediment transport in the Ebro delta inner shelf
Transporte de sedimento transversal Inducido por olas en la plataforma interna del Delta del Ebro
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Author
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Publication Date
1999 -
Publisher
Sociedad Geológica de España -
Abstract
The near-bottom wave-induced cross-shelf sediment transport is one of the main mechanisms to maintain morphologically inner shelves. In opposition to suspended sediment transport by currents that controls fine sediment dispersal (and in consequence sediment deposits) in the shelf according to the ambient current direction, when waves actively resuspend and transport sediment in the inner shelf, their contribution is generally shoreward. In this paper, the wave-induced cross-shore sediment transport in the Ebro delta inner shelf is analysed and a method to predict their importance is presented. The obtained results show that the efficiency of the waves can be predicted in terms of the Ursell number that indicates how nonlinear the waves are. Thus, it was estimated that the annual frequency of occurrence of efficient waves to promote cross-shelf sediment transport in the Ebro delta is about 4.8% and that the integrated cross-shelf sediment transport is about 4.7 m3/m/yr
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