No abstract

The coasts of Shikoku Island, Japan are exposed to the tsunami, generated by Tonankai-Nankai earthquake and thus urgent countermeasures are needed. The storm surge, generated by two typhoons in 2004, caused a coastal disaster with flooding over a large area of Shikoku Island. It is necessary to gather and manage the damages by tsunami and storm surge in all coastal area. However, practically it is a hard to collect the disaster-related information and to analyze the damages. An alternative is numerical simulations. The numerical simulation is one of the best tools for the speedy analysis of disaster phenomena such as tsunami and storm surge that have large temporal spatial scales. The numerical system has been developed for coastal protection works of the coast of Shikoku Island. This system consists of three numerical simulation models (Wave, Storm Surge and Tsunami models), their supporting subsystems and supporting databases. With this system, the coastal protection works can be supplied with more reliable information.