Simulation of the 1771 Yaeyama Earthquake Tsunami Propagation into the Yellow Sea

Abstract

It has been known that the 1771 Yaeyama earthquake tsunami caused highest runup of 40 meters(another 60 meters claim) in Ishigaki Island although the magnitude of the earthquake was estimated to be 7.4, which was much larger than that estimated from that intensity The earthquake occurred in the Ryukyu Trench of subduction zone of Philippine Sea Plate and Eurasian Plate. Our interest in this revisit simulation study lies in whether tsunami outside of the Yellow Sea will affect the inner Yellow Sea coasts and also the conventional fine-mesh FEM could reproduce the high runup and inundations.