FORMATION OF A SAND SPIT IN EXTREMELY SHALLOW SEA INSIDE OF EL PUNTAL SPIT IN SPAIN

Abstract

 El Puntal spit of 2.5 km length elongates at Santander Bay facing Gulf of Biscay in Spain. In extremely shallow sea of tidal flat on the south side of this sand spit, a small cay was deformed owing to wind waves in the bay, resulting in the formation of sand spits. In this study, the deformation of a cay and the formation of sand spits were investigated by the analysis of satellite images and site observation. The results were compared with those obtained by the numerical simulation using the BG model in the previous studies.