000018422 001__ 18422
000018422 005__ 20170118182221.0
000018422 04107 $$aeng
000018422 046__ $$k2017-01-09
000018422 100__ $$aTadanobu, Sato
000018422 24500 $$aEvaluation of Inhomogeneous Structures in Seismic Propagation Path in Japan Based on the Fractal Characteristic of Observed Earthquake Motion Phase

000018422 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018422 260__ $$b
000018422 506__ $$arestricted
000018422 520__ $$2eng$$aThe amplitude of seismic ground motion attenuates because of the wave scattering phenomenon due to the inhomogeneity of the wave propagation path. In the framework of strong ground motion estimations, this attenuation effect is modeled by Q-value. In the past study, Q-value in and around Japanese Archipelago has been estimated by the tomography using observed ground motions and Spectral Inversion Technique proposed by Iwata and Irikura (1986). Sato (2013) has developed a new methodology to evaluate inhomogeneity of wave propagating medium using phase characteristics of observed strong ground motions. It is assumed that the phase characteristics of ground motion have the self-affine similarity because the inhomogeneous crustal medium of the wave propagation path shows the self-affine similarity nature. The selfaffine similarity of phase is evaluated by Hurst index. In this paper, the inhomogeneity of the wave propagation medium in the whole of Japan is evaluated based on Hurst index which is calculated by the Sato’s method. It is found that distribution of Hurst index has a regional locality and its characteristics are consistent with scattering Q-value distribution evaluated in the past study. From these results, we can simulate earthquake motion phase considering the regional inhomogeneity of medium.

000018422 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018422 653__ $$aphase characteristics, Hurst index, Fractal, Scattering, Q-value

000018422 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018422 720__ $$aTadanobu, Sato$$iKohei, Tanaka
000018422 8560_ $$ffischerc@itam.cas.cz
000018422 8564_ $$s713404$$uhttps://invenio.itam.cas.cz/record/18422/files/1420.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1420.
000018422 962__ $$r16048
000018422 980__ $$aPAPER