The simulation of the extreme storm waves due to Typhoon CHABA

Abstract

On October, 2016 Category 4 typhoon CHABA landed the southeast coast of the Korean peninsula. Due to the typhoon CHABA, flood inundation and wave overtopping damages occurred in many ports and coasts. Especially, damages of Gamcheon Port and Dadaepo Port were the greatest. In this study, we tried to find the cause of the difference of extreme waves within relatively short distance using numerical experiments. In order to simulate the typhoon winds, we used a typhoon parameter model and WRF with 4 km spatial resolution. For wave simulation, the WaveWatch III with a 2 km spatial resolution is used. A wave-current coupled model was constructed to simulate the effect of interaction between wave and currents, where, the currents include 3 dimension oceanic and tidal components.d Dadaepo Port were the greatest. In this study, we tried to find the cause of the difference of extreme waves within relatively short distance using numerical experiments. In order to simulate the typhoon winds, we used a typhoon parameter model and WRF with 4 km spatial resolution. For wave simulation, the WaveWatch III with a 2 km spatial resolution is used. A wave-current coupled model was constructed to simulate the effect of interaction between wave and currents, where, the currents include 3 dimension oceanic and tidal components.