NM-JP-1 Tsunami simulation of Hakata bay using the viscous shallow-water equations

抄録

The tsunami caused by the great East Japan earthquake gave serious damage in the coastal areas of the Tohoku district.Numerical simulation is used for damage prediction as disaster measures to these tsunami hazards.Generally in the numerical simulation about the tsunami propagation to the coast from an open sea,shallow-water equations are used.This research focuses on viscous shallow-water equations and attempts to generate a computational method using finite element techniques based on the previous investigations of Kanayama and Ohtsuka(1978).First,the viscous shallow-water equation system is derived from the Navier-Stokes equations,based on the assumption of hydrostatic pressure in the direction of gravity.Next the numerical scheme is shown.Finally,tsunami simulation of Hakata bay is shown using the approach.