Abstract
The depth of closure in Sendai Port is estimated using 10 years bathymetry data and proposed as a longshore variation. The hydrodynamic condition is simulated using Boussinesq equation (Peregrine, 1967) which was modified by applying long wave theory. Using wave data from 1991 to 2003, 20% wave height in deep areas is applied as a representative wave. From the modeling, bottom velocities in the x and y directions are obtained. The result is used to calculate the maximum bottom velocities just outside the boundary layer. The effect of wave reflection is observed using the velocity distribution and maximum bottom shear stress. By integrating the velocities in the x and y directions, the area that is influenced by reflected waves can be observed. The results are depicted as a spatial map. The longshore variation of the depth of closure is overlaid on the results to confirm the influence of wave reflection for its variation.
