NUMERICAL CALCULATION OF TSUNAMI PROPAGATION INTO OSAKA BAY

Abstract

Equations of tsunami propagation were solved analytically with simple initial and boundary conditions. But these days we can solve them with complex conditions numerically due to the development of electric computers. In this report which considers the damage from tsunami caused by great earthquakes (for example 1946 Nankaido earthquake), the wave forms along the coast of Osaka Bay are obtained according to the numerical solution of differential equations with the approximation of the long wave. The boundary condition of a sine wave with the period of30, 60 and 120 min. are used in the mouth of Kii Channel, and the resonance in Osaka Bay is examined with each condition.