000010359 001__ 10359
000010359 005__ 20141205155719.0
000010359 04107 $$aeng
000010359 046__ $$k2008-10-12
000010359 100__ $$aIwata, Tomotaka
000010359 24500 $$aNon-Linear Site Response Characteristics of K-NET ISK005 Station and Relation to the Earthquake Disaster During the 2007 Noto-Hanto Earthquake, Central Japan

000010359 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010359 260__ $$b
000010359 506__ $$arestricted
000010359 520__ $$2eng$$aOn March 25, 2007, the 2007 Noto-Hanto earthquake of MJ6.9 occurred. We analyzed the strong ground motion records at the Anamizu (K-NET, ISK005) station, where recorded JMA seismic intensity of 6+, to get the ground motion characteristics at the station. Comparing the H/V spectral ratios of the mainshock records and those of records for before events and for aftershocks, non-linear site response behavior during the mainshock ground motions was observed. As the H/V characteristics were already recovered at the coda wave part of the mainshock records, non-linear site response was restricted only the strong shaking part. We also conducted aftershock and microtremor observations by the temporally-installed stations to understand extension of the area whose subsurface layer characteristics are similar with that at the ISK005 station. Large amplifications of S-wave portion of aftershock records at the ISK005 and sites were observed by comparing those at the ANC, where is regards as a rock station. As the site specific ratio, amplification of approximately 10 at the frequency range of 1-1.5Hz among aftershocks. Single station microtremor H/V ratio also show the similar predominant frequency at Anamizu downtown sites and the low-velocity subsurface layer seems to extend the disaster area during the mainshock.

000010359 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010359 653__ $$aNon-linear site response, the 2007 Noto-Hanto earthquake, microtremor observation, aftershock observation

000010359 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010359 720__ $$aIwata, Tomotaka$$iAsano, Kimiyuki$$iKuriyama, Masayuki$$iIwaki, Asako
000010359 8560_ $$ffischerc@itam.cas.cz
000010359 8564_ $$s809827$$uhttps://invenio.itam.cas.cz/record/10359/files/01-1026.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 01-1026.
000010359 962__ $$r9324
000010359 980__ $$aPAPER