STRONG GROUND MOTION EVALUATION AT AFTER SHOCK OBSERVATION SITES DUE TO THE 2016 CENTRAL TOTTORI EARTHQUAKE

Abstract

 An earthquake of M_JMA 6.6 occurred in the central part of Tottori prefecture in Japan on October 21, 2016. Recorded JMA seismic intensity were 6 lower at three observation points. Serious damages were concentrated in partial areas. Aftershock observations were conducted at damaged area to clarify causes of the damage. In this study, we evaluated strong ground motions at aftershock observations points using empirical Green's function method. It was found that damaged sites tend to have high peak ground velocity and high response values in period range around 1.0sec.