Abstract
This study conducted tsunami propagation simulation due to the 2011 Tohoku Earthquake using the Coastal ocean Current Model (CCM), which is a quasi-three-dimensional ocean model with a terrain following multi-sigma coordinate system, so as to validate the applicability of the model for simulating tsunami propagation. Furthermore, the study numerically examined water structure variations in Ise Bay area under tsunami attack due to Nankai Trough earthquake using an air-sea-water quality coupled model including the CCM for coastal current calculation. As a result, the coastal flow induced by the tsunami caused an intrusion of oceanic water with high salinity during in a short period and the disappearance of hypoxia, which implied that the tsunami has a great impact on water structure.
