Comparison of numerical wave models of long distance tsunami propagation

An application to Indian Ocean Tsunami in 2004

抄録

Numerical simulation of Tsunami propagation has been carried out based on four algorithms of wave dynamical equation. Besides non-linear shallow water equation which is common for the simulation, dispersive wave model (i.e. Boussinesq-type equations) is a challenge to make more reasonable model while taking care of the low computation cost. This paper discussed numerical simulation results of tsunami propagation model based on dispersive and non-dispersive models. Satellite image data is used to compare the numerical results with real field sea levels data of tsunami. Simulation results show that the dispersive models give better prediction but still need high computation cost while non-dispersive one give consistent result.