ESTIMATION OF STRONG GROUND MOTION AND TUNAMI BY TONANNKAI-NANNKAI EARTHQUAKE

Abstract

Along the Suruga trough and Nankai trough, where large inter-plate earthquakes have occurred every 100 to 150 years, it is thought that the next large event may occur in the first half of this century. The Central Disaster Management Council, with the Specialist Investigation Committee on Tonankai-Nankai Earthquakes, undertook investigation on the nature of strong ground motion and tsunami based on recent scientific achievements and accumulated observation data. The estimated damages due to the event of fault length of 500km are huge in very wide areas. The Council is to designate the areas for earthquake disaster prevention countermeasures according to the results of investigation.