| Budget Amount *help |
¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
Fiscal Year 2009: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2008: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2007: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
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| Research Abstract |
This study investigates modeling of S-wave velocity structure of deep sedimentary layers for prediction of strong ground motion in seismic hazard estimation. We proposed a waveform inversion method to deduce an S-wave velocity profile using S-wave part of earthquake records. We also proposed a joint inversion method of the S-wave part, surface-wave phase velocity, receiver function, and coda H/V spectra to S-wave velocity with high accuracy. It is also effective in modeling S-wave velocity to use amplification factors estimated from earthquake records and group velocity from seismic interferometric processing of long-term continuous microtremor data. We finally validated an S-wave velocity model with comparison between calculated and observed earthquake motion.
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