Abstract
A numerical simulation model for the simultaneous analysis of storm surges and their inundation of a protected low-lying area is presented. After the check of the model, the effectiveness of current measures against storm surges in Osaka Bay was estimated for the “designed” typhoon. The really worst course for Osaka bay area was examined. It was about 30 km western course of Muroto Typhoon. The influence of typhoon moving speed on the inundation area is also investigated. When the typhoon takes the course, the flooded area incresed with the increase of the speed. Zones at risk of storm surge flooding after a sea-level rising due to green house effect also were predicted with this simulation model.
