Regional Sediment Management Considering Volume of Sand and Grain Size

Abstract

The Shonan coast facing Sagami Bay has been eroding since the 1970s. Now that the steady procurement of nourishment sand has become difficult in Japan because of the limited sand resource, the effective use of sand presently deposited on a coast has become important. For this purpose, regional sediment management considering not only sand volume but also the sand grain size is important. In this study such sediment management for maintaining beaches was considered, taking the Shonan coast as an example, and applying the contour-line-change model considering the changes in grain size.