EVALUATION OF STRONG MOTION AND FRAGILITY CURVE IN KAMISHIRO DISTRICT, HAKUBA VILLAGE, NAGANO PREFECTURE FOR THE 2014 NORTHERN NAGANO PREFECTURE EARTHQUAKE

Abstract

 In Kamishiro District, a residential area in Hakuba Village, serious damage of many wooden houses was caused by the 2014 Northern Nagano Prefecture Earthquake (M_J6.7). To better understand the mechanism of the damage, it is necessary to have a better understanding on the seismic response of the residential area during the 2014 main shock with high accuracy by taking into account local site effects. In this study, we first estimated the seismic waveforms at 232 sites in the area. Next, we carried out 3-D DEM calculation of tombstone at 7 graveyard sites in the area, in order to confirm the applicability of the estimated waveforms. Based on the estimated waveforms, finally, we discussed the characteristics of ground motion which influenced the seismic damage of the wooden house. The estimated waveforms and obtained findings will be useful in future study on seismic performance evaluation of a wooden house.