FIELD INVESTIGATION ON REGIONAL SEDIMENT MOVEMENT AROUND THE SHOUNAN COAST

摘要

Regional sand movement and long-term beach deformation were investigated for the fluvial system composed of the Shounan coast and three major rivers flowing into the coast. Anthropogenic impacts, such as dams and weirs, sand dredging, fishery harbors and shore protection structures on long-term beach erosion were discussed on the basis of the comprehensive analysis on nearshore sand volume, mineralogical properties of surface sediments and decadal dating of the sand layer based on Pb-210 radioactivity.