Verification of Corrected COMCOT Numerical Model Using Dispersion Correction Method

Tsunami simulations based on the COMCOT numerical model have predominantly used either linear or nonlinear shallow water equations. Although COMCOT includes a dispersion correction scheme applicable to regions with varying bathymetry, its application requires corrections to the model’s source code. In this study, a corrected version of COMCOT, where the dispersion correction scheme is properly implemented, is used to simulate tsunami propagation with dispersion effects. The corrected model is validated against analytical solutions and further evaluated by comparing the simulation results with observational data from the 1983 Akita Tsunami event.