STORM SURGE INUNDATION SIMULATION AT HEAD OF ISE BAY USING COASTAL CIRCULATION MODEL WITH UNSTRUCTURED GRIDS “FVCOM”

Abstract

 In this study, we calculated storm surge inundation at the head of Ise Bay by using a coastal circulation model with unstructured grids “FVCOM”. The typhoon conditions were set to be Isewan Typhoon in 1959 and potential typhoon based on the SRES A1B scenario of IPCC. The numerical results for Isewan Typhoon were recognized to be in agreement with the maximum value of storm surge deviation. Coastal structures were also confirmed to be able to protect landside area from storm surge on Isewan Typhoon scale. We examined inundation process due to storm surge induced by potential typhoon and the mitigation effect of coastal structures. The properties of unstructured grid model were also confirmed through the comparison with the numerical results using structured grids including coastal structure treatment.