NUMERICAL CALCULATION OF DEFORMATION OF BAY MOUTH BAR IN SHALLOW AREA SHELTERED BY AN ISLAND

Abstract

 When an island or a sand bar is located at the bay mouth, wave field will change due to the wavesheltering effect of the island or the sand bar, resulting in significant beach changes around the bay mouth area. To realize the effect, beach changes were calculated under the conditions that an island is symmetrically or asymmetrically placed at the bay mouth using the BG model (a three-dimensional model for predicting beach changes based on Bagnold's concept).