Quid de l'impact de la déficience des données de base sur le choix des caractéristiques d'un émissaire en mer dans le golfe de Tunis?

Abstract

Abstract:When planning a sea outfall pipe design, the basic data gathering turns out to be a very fussy task because of the complexity of the marine environment. In case where basic data are not enough, With a theoretical approach, based on Stokes' model of heave, it is possible to obtain some information about the waves' dimensions, the breaking zone next to the seashore, and the drift phenomenon which is responsible for the pollutants' dissemination. But, almost of outfall pipe designers resort to numerical modelling tools to visualize sea currents and outflow evolution without required basic data. Waiting for reliable data gathering, we suggest to create a "Mediterranean Existing Outfall Pipe Observatory" that would provide more information about their functioning and give more help about future sea out fall pipe design. Mots-clés :Protection du littoral -Emissaire en mer -Dimensionnement -Houle -DilutionModèles