Japan Geoscience Union Meeting 2019

Presentation information

[J] Poster

S (Solid Earth Sciences ) » S-SS Seismology

[S-SS13] Strong Ground Motion and Earthquake Disaster

Mon. May 27, 2019 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

convener:Masayuki Kuriyama(Central Research Institute of Electric Power Industry), Kazuhiro Somei(Geo-Research Institute)

[SSS13-P31] Densely microtremor observation to estimation of subsurface structure in Nishizono and Yura area, Hokuei Town, Tottori Prefecture, Japan

*Tatsuya Noguchi1, Katsuya Tomeoku, Isamu Nishimura1, Shohei Yoshida1, Takao Kagawa1 (1.Department of Management of Social Systems and Civil Engineering, Civil Engineering Course Graduate School of Engineering, Tottori University)

Keywords:microtremor observation, characteristics of ground motion, subsurface structure, 2016 central Tottori prefecture earthquake

Densely microtremor observations were carried out to estimate a characteristic of ground motion and subsurface structure in the damage area due to 2016 central Tottori Prefecture earthquake, Yura and Nishizono area, Hokuei Town, Tottori Prefecutre. Microtremor H/V spectra and a distribution of the predominant period and underground structure models were obtained, and grasped the characteristic of ground motion based on this result. As a result, it was found that a difference of the subsurface structure depth to about 20m and a short period component of predominant period less than 0.5 seconds may have influenced structural damage.