抄録
A numerical model for the hydrodynamic pressure on submarged structure during earthquakes is developed by use of two dimensional source distribution method.A green's function satisfiying boundary value problem consists of acoustic wave equation in water, water surface condition and partial reflective bottom condition is newly derived. Property of wave reflection on bottom is estimated from sound speeds and densities of water and bottom material.
Comparison with analytical result for vertical wall shows good agreement. Difference of reflection ratio according to bottom materials have much influence on characteristics of hydrodynamic pressure is shown.
