2013 Volume 69 Issue 2 Pages I_706-I_710
On the Hokota coast facing the Pacific Ocean, beach changes have occurred in response to the seasonal variation in wave direction and wave height. Aerial photographs were taken to investigate shoreline changes around Nos. 23 and 29 artificial headlands. Numerical simulation using the BG model improved by Noshi et al. (2009) was carried out. The seasonal changes in beach topography and grain size of bed materials were reproduced. Furthermore, beach changes when submerged groins were extended offshore of Nos. 23 and 29 artificial headlands were predicted.