Abstract
There are many researches on disaster mitigation and countermeasure for a tsunami cuased by Nankai Megathrust Earthquakes in the future. Owing to the topographic feature of Ise Bay and Mikawa Bay, the tsunami coming from Pacific Ocean has to pass through Ise Bay mouth to intrude into the bays. Tsunami information around the bay mouth can be considered as a prior information of tsunami arrival in the bays. In 2014, GPS wave gauge had been installed off Ise Bay mouth so that it will be possible to obtain the tsunami information in advance. This study aims to grasp the characteristics of a spatial distribution of the maximum water level and its arrival time in Ise Bay and Mikawa Bay by numerical simulations of tsunami propagation coming from the ocean. As a result, higher water level and shorter arrival time of maximum water level are indicated around the top of Chita peninsula in the bays. Furthermore, the northwest part of Ise Bay is also exposed by high water level. In Mikawa Bay, the western part has high risk than the eastern part for tsunami disaster. The distribution of tsunami risk in Ise Bay and Mikawa Bay is investigated in this study.
