MOVEMENT OF SAND BODY AND VERIFICATION OF EFFECT OF BEACH NOURISHMENT ON SHIZUOKA-SHIMIZU COAST

Abstract

 The movement of sand body was investigated using the bathymetric survey data, and the effect of beach nourishment was verified on the Shizuoka-Shimizu coast. It was found that the sand body moved downcoast given the sand supply of 1.8×10⁵m³/yr from the Abe River. The beach nourishment using the riverbed material of the Abe River was effective as a measure against beach erosion. However, it was estimated that the deposition of coarser material on the beach face causes the slowdown of the movement velocity of sand body.