2019 Volume 75 Issue 2 Pages I_713-I_718
The Bakkai Fishing Port, which was constructed facing the Rishiri Channel, is characterized by the strong influence of both nearshore and winddriven currents due to a location on a small cape in a strong wind area, and shoaling of Harbor has been a problem for many years. In this study, current and sediment transport characteristics at the entrance of the Bakkai Fishing Port were examined based on a detailed field survey and numerical analysis. As a result, current characteristics including the circulation at the port entrance depending on the wave/wind directions were clarified. The inflow characteristics of littoral drift into the port during high waves, as well as suspended sediment concentration, were also clarified.It has become possible to reproduce relatively short-term(about three months) change of bottom topography by this calculation to which the wind-driven current was added and taking into account the time series variations of waves and winds during high waves.
