DYNAMICS OF SAND MOVEMENT ON HAMAMATSU COAST FACING ENSHUU-NADA

Abstract

Dynamics of sand movement were described on the Hamamatsu Coast in Enshuu-nada facing the Pacific Ocean. Topographies of coastal sand dune and nearshore region were reproduced by using digitalized contour lines in geographical maps collected since 1891. Nearshore sand movement was discussed by using bathymetry data. The deformation of coastal topographies around the Magome River mouth was found to be influenced by eastward wind blown sand, westward longshore transport and intermittent sand supply from the Tenryu Rivers. The recent rapid deformation of the Nakatajima Sand Dune was developed mainly by the entrapment of aeolian sand movement owing to the forestation on the adjacent region.