000009431 001__ 9431
000009431 005__ 20141205150205.0
000009431 04107 $$aeng
000009431 046__ $$k2008-10-12
000009431 100__ $$aAsano, Kimiyuki
000009431 24500 $$aSource Modeling of Recent Large Inland Crustal Earthquakes in Japan and Source Characterization for Strong Motion Prediction

000009431 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009431 260__ $$b
000009431 506__ $$arestricted
000009431 520__ $$2eng$$aDense strong motion observation networks provided us valuable data for studying strong motion generation from large earthquakes. In recent years, several large earthquakes occurred in Japan, and a large amount of strong motion data is recorded. It is important for advancement of source modeling in scenario-based strong motion prediction to quantify detailed source characteristics of past earthquakes. We have estimated the source rupture process of these earthquakes by the kinematic waveform inversion using strong motion data. The asperity, where slip is relatively large compared to average slip over the fault, is quantified following the criteria proposed by Somerville et al. (1999). The stress changes during these earthquakes are cestimated from the detailed slip distributions obtained by the kinematic waveform inversion. The stress drops on and off asperities are characterized based on the stress change distributions obtained here. The stress drop on asperity is one of key parameters in source modeling, because stress drop is related to slip velocity of the source fault and associated ground motion. We compiled the stress drop on the asperities together with data set of previous studies for other inland earthquakes in Japan and others. The static stress drop on asperity depends on its depth, and we obtained an empirical relationship between static stress drop and asperity’s depth. Moreover, surface breaking asperities appeared to have smaller stress drop than buried asperities.

000009431 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009431 653__ $$asource modeling, inland crustal earthquake, asperity, stress drop, waveform inversion

000009431 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009431 720__ $$aAsano, Kimiyuki$$iIwata, Tomotaka
000009431 8560_ $$ffischerc@itam.cas.cz
000009431 8564_ $$s2006010$$uhttps://invenio.itam.cas.cz/record/9431/files/03-01-0025.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 03-01-0025.
000009431 962__ $$r9324
000009431 980__ $$aPAPER