000019046 001__ 19046
000019046 005__ 20170118182256.0
000019046 04107 $$aeng
000019046 046__ $$k2017-01-09
000019046 100__ $$aUeno, Hiroshi
000019046 24500 $$aEstimation of Subsurface Structure Based on Microtremor and Gravity Survey in the Shikano Area, Tottori Prefecture, Japan

000019046 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019046 260__ $$b
000019046 506__ $$arestricted
000019046 520__ $$2eng$$aShikano and Yoshioka earthquake fault occurred on the surface by the 1943 Tottori earthquake. In this study, subsurface structures were determined and we grasped characteristics of ground motion by microtremor and gravity survey in the Shikano area, Tottori Prefecture. Microtremor single-point 3-components observations and array observations were carried out at 304 and 34 sites respectively. As analysis of microtremor surveys data, we estimated S-wave velocity structures by using phase velocities obtained from array observations and predominant periods of H/V spectrum obtained from singlepoint 3-components observation records. Gravity observations were carried out at 38 sites. As analysis of gravity surveys data, gravity anomalies with assumed density in 2.4g/cm3 were obtained by using gravity databases, existing data in the east-part of Tottori Prefecture and this study data. 3D density structures from the distribution of gravity anomalies were estimated. We simulated strong ground motions at 3 seismic stations where subsurface structures are different. Then we could evaluate difference of characteristics of seismic ground motion.

000019046 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019046 653__ $$amicrotremor survey, gravity survey, subsurface structure, Shikano fault

000019046 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019046 720__ $$aUeno, Hiroshi$$iYoshida, Shohei$$iKagawa, Takao$$iNoguchi, Tatsuya
000019046 8560_ $$ffischerc@itam.cas.cz
000019046 8564_ $$s604206$$uhttps://invenio.itam.cas.cz/record/19046/files/2745.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2745.
000019046 962__ $$r16048
000019046 980__ $$aPAPER