沖合人工島の設置位置による海浜変形の相違について

抄録

In recent years, large scale structures have been built on offshore for utilization of coastal zone as offshore airport and marine terminals. Those big scale structures, however, may act as significant barriers against wave and severe beach erosion may take place on the coast.
The present study deals nearshore topography change affected by construction of an offshore structure with different distance from the shore. The series of three dimensional movable bed experiments have been examined in detail. Moreover, in order to make clear the relation of nearshore currents and local erosions behind offshore structure, the nearshore currents are calculated by boussinesq equation model with the same scale condition of the experiments.