Ground Motion Estimation at Akita and Numayamazu Production Wells for the Foreshock and the Main Shock of the 2016 Kumamoto Earthquake

Abstract

Serious damage with tilting of housings for pumping facilities in clean water distribution field, which are located near the epicenters of the 2016 Kumamoto earthquake sequence, was occurred due to the strong motions. In this study, aftershock observations were conducted at the damage sites in order to evaluate the site effects. Seismic waveforms at the sites during the earthquakes were then estimated based on the site effects and the characterized source model. The estimated ground motions will be useful in the detailed study of the damage mechanism.