三重県における東海・東南海・南海三連動型地震の津波解析および歴史津波との比較検討

抄録

This paper investigates tsunami characteristics on the coast of Mie Prefecture due to Tokai-Tonankai-Nankai Earthquake based on the numerical results with a two-dimensional depth-integrated flow model. The earthquake scales were respectively set to M8.7 and M9.0 which corresponds to the 2011 off the Pacific coast of Tohoku Earthquake. As a result, the tsunami propagation and inundation characteristics were confirmed to mainly depend on the magnitude of the earthquake, coastline geometry and bathymetric topography. Comparison of the numerical results and the survey data of the 1707 Hoei earthquake tsunami and the 1854 Ansei-Tokai earthquake tsunami indicated that it is of importance from a viewpoint of disaster mitigation to discuss an earthquake along the Nankai Trough with a large scale of M9.