Numerical Simulation of Formation of Bay Barriers Using the BG Model

Abstract

The interaction of symmetric and asymmetric sand bars enclosing a bay between them due to wave action was investigated using the BG model (a three-dimensional model for predicting beach changes based on Bagnold's concept). Under the condition that sand spits with asymmetric shape elongate from both shores of a bay, the wave-sheltering effect of these sand spits affecting the other spit differ each other, causing the interaction of the sand bars. This results in the formation of sand bars with characteristic features. The predicted beach changes were compared with the results given by Zenkovich (1967).