Recovery of Sandy Beach by Gravel Nourishment - Example of Ninomiya Coast in Kanagawa Prefecture, Japan

Abstract

The effect of gravel nourishment on the Ninomiya coast, located west of the damaged site of the Seisho Bypass, was investigated. On the basis of field data, a method of recovering the sandy beach by gravel nourishment was numerically investigated using the BG model. As a facility to prevent nourishment gravel from being transported alongshore, two groins were considered, and their effectiveness was shown. The high stability of the recovered beach and the effectiveness of gravel nourishment were confirmed.

Introductory Chapter: Morphodynamic Model for Predicting Beach Changes Based on Bagnold’s Concept and Its Applications

“…These changes in the local slope in and around the wave-shelter zone can also be predicted [61,62], taking the equilibrium slope corresponding to each grain size and its composition into account. Their applications are shown in [63][64][65]…”