Japan Geoscience Union Meeting 2016

Presentation information


Symbol S (Solid Earth Sciences) » S-SS Seismology

[S-SS25] Strong Ground Motion and Earthquake Disaster

Tue. May 24, 2016 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Seiji Tsuno(Railway Technical Research Institute)

5:15 PM - 6:30 PM

[SSS25-P26] Exploration of Underground Structure and Analysis of Seismic data in Central Area of Tottori Prefecture

*Tatsuya Noguchi1, Hiroshi Ueno1, Sho Nakai1, Shoya Arimura1, Kazu Yoshimi1, Takao Kagawa1, Shohei Yoshida1 (1.Department of Management of Social Systems and Civil Engineering, Civil Engineering Course Graduate School of Engineering, Tottori University)

Keywords:Underground structure, Geophysical exploration, Seismic data, Central Area of Tottori Prefecture

An earthquake (in 1983, M6.2) which caused disasters in Kurayoshi City occurred in central area of Tottori Prefecture. In this study, microtremor and gravity survey were carried out to estimate underground structures in the target area. Furthermore, aftershocks were observed at temporary seismic observatories around focal region and the seismic data (include data of municipalities) were analyzed. S-wave velocity model, microtremor H/V spectrum and a gravity basement structure were obtained from underground explorations. Characteristics of seismic indexes of target observatories were understood from analysis of seismic data.