Abstract
Some of the natural beaches in the Seto Inland Sea are expected to have a key role as shore protection facility. However, temporal - spatial variation of topography change and sediment property on the beach surface and trapping effect of blown sand by vegetation are still not well understood. In this study, field observations in the Narugashima Island in the vicinity of AWAJI Island in Japan and the laboratory experiments were carried out. In the field observation, we confirmed the vegetation growing in the vicinity of back beach affects on the sediment transport and the local topography change. On the other hand, in the laboratory experiments, it is clarified that the greater density of vegetation has a beneficial effect on trapping the blown sand. This is a similar trend observed in field observations.
