Modélisation de l'évolution du trait de côte et de la protection du littoral dans le golfe de Tunis

Abstract

 This study is interested with the evolution and protection of the coast of the North Suburb of Tunis by modélisation with UNIBEST model. To do so, a review of literature was elaborated concerning the coast morphology, the natural factors (wave, tide) affecting it, as well as concerning the means and structures of protection used.The study of the coast of the North Suburb of Tunis required its division in areas of the study in order to respect the basic hypothesis for the UNIBEST model. The calibration procedure was done on one zone.The modelling of the coast line evolution in the North Suburb showed that there are two sites which are affected by erosion: The first is the coast at Gammarth between the hotels‘’ La Tour Blanche and Migara ’’ and the second one is situated at Carthage near the Institute of the High Commercial Studies (IHEC).Some protective solutions have been recommended in this work. They consist either on the implantation of breakwaters and groynes, or on beach nourishment. The efficiency of these solutions was tested by “UNIBEST”.