2024 Volume 80 Issue 17 Article ID: 24-17041
To facilitate the gradual guidance of the residential and urban area and reasonably determine the insurance cost rates for flooding risk due to storm surge inundation, it is imperative to develop a method for constructing the storm surge inundation risk maps based on the probabilistic assessment in an arbitrary coastal area. This study proposes two methods: Method 1 utilizes the typhoon track data from d4PDF directly, while Method 2 employs Monte-Carlo simulation incorporating typhoon parameters such as the central pressure and the forward speed. These methods were applied to the vicinity of Nagoya port and computed the distribution of the inundation depth at various probability levels. Furthermore, typhoon paths corresponding to each probability level were extracted. The results showed that although Method 2 has greater uncertainties compared to Method 1, its computational cost remained within the acceptable range and its accuracy is enough to construct the storm surge inundation risk maps even in an arbitrary coastal area or when using altered typhoon data.
