Abstract
To simulate landslide induced tsunami, we proposed an integrated model including landslide and tsunami models. The model was derived based on the two layer-model assuming the Coulomb theory. The numerical model was verified by the simulation of 1792 Ariake-Kai tsunami caused by Mayuyama collapse, which killed 15,000 people. The numerical result was approximately consistent with the measured data of deposition area. To further validate the model, we compared measured tsunami heights with computed results. The results was satisfied with JSCE's K and κ values (K=0.96, κ=1.37). These findings confirm that the model can be used with confidence to investigate 1792 Ariake-Kai tsunami. According to our results, the tsunami was reflected by Kumamoto area and the waves were trapped on Shimabara peninsula.
