Experimental Study on Effect and Advantage of Beach Nourishment using Coarse Sand

Abstract

A series of laboratory experiments were conducted on the performance of coarse sand nourishment on a fine sand beach. Beach profiles were measured for two cycles of high waves and moderate waves. The movement of coarse sand nourished on the shore was found to be classified in terms of the C parameter proposed by Sunamura and Horikawa (1974). Coarse sand nourishment was found to be effective, even in the case coarse sand was moved offshore, since coarse sand contributed to the decrease in offshore-ward sand transport rates thorough the stabilization of the sand bar at the breaker point.