Examination of the Beach Nourishment Project at Tottori Sand Dune Coast

At Tottori Sand Dune Coast, the coastal erosion has been serious problems, and the beach nourishment project has been carried out for against erosions since 2005. However the effects of the project are not clarified and the detailed examination is not performed. The purpose of this study is to investigate the mechanism of the movement of the injected sand and the effect of the beach nourishment using the bottom sounding data at Tottori Sand Dune Coast and Tottori Port. The bottom sounding data were interpolated 20m, and the sand volume were estmated respectively. It was found that before the project, the sand volume were decreased, but after the beach nourishment project, sediment transport rate were toward to increased. This result shows that beach nourishment project are effective against beach erosions.