Dynamique sedimentaire et repartition granulometrique des sediments de surface dans la frange littorale Ras Taguermess et Ras Marmour (golfe de Gabes)

Abstract

The grading analyses of superficial sediments of the coastal zone situated between Ras Taguermess and Ras Marmour show that the small capital (2 - 10 m) is covered by fine sands in unrefined sands (the medium is between 0,39 and 3,34 ), generally badly in very badly classified. However, the height of beach situated between Ras Taguermess and Ras Marmour is essentially covered by fine sands and average sands. The spatial distribution of sands does not show a lessening or increasing grano-classification of sediments of the coast towards the wide. This distribution is due to the existence of an important energy where the swell plays the essential role on their distribution. The grading study also shows a grading sorting made by the currents of the North littoral drift southward, Ras Taguermess towards Aghir. Another grading sorting of the Southeast towards the Northwest, Ras Marmour towards Bin El Ouediane.