Effect of Ground Subsidence Associated with Crustal Movement to Beach Changes between Point Omaezaki and Katsumata River Mouth in Suruga Bay

Abstract

Shoreline changes along the coasts between Point Omaezaki and the Katsumata River mouth in Suruga Bay were investigated using aerial photographs. Although northward longshore sand transport was predominant before the construction of the Omaezaki Port breakwater, the direction of longshore sand transport reversed owing to the effect of the formation of the wave-shelter zone by the port breakwater. In addition, the effect of ground subsidence associated with crustal movement was superimposed to these beach changes.