Development of A Simplified Method for Judging Storm Surge Risk around Ariake Sea

For the purpose of developing a simplified method for judging storm surge risk around Ariake Sea, many numerical computations for storm surge were carried out. A lot of various typhoon data, which are the input data for the storm surge computations, were created by a stochastic typhoon model with the Monte Carlo simulation. The relationships between the storm surges and typhoon parameters (the central atmospheric pressure, the radius of the maximum wind speed and the course) were investigated on the basis of the computation results. Then, the conditions of typhoons that may cause severe storm surges were clarified at several coastal areas around Ariake Sea.