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| | Abstract | | Building damage was observed in and around Kashiwazaki area during the 2007 Niigata-ken Chuetsu-oki earthquake, Japan. After the main shock, Motoki and Yamanaka (2010) conducted aftershock observations in the damaged area by installing temporary stations in two weeks to investigate site condition and ground motion features. In this study, we applied a seismic interferometric processing to the aftershock records to retrieve Rayleigh wave component of the Green's function for each station pairs. The processed Rayleigh wave group velocities at periods of 0.5 to 3 seconds were inverted to S-wave velocity profiles down to the top of soil layers having an S-wave velocity of 1km/s. This result indicated the possibility for application of seismic interferometry to short-term aftershock observations to retrieve surface wave propagating sedimentary layers for additional materials to discuss site effects. |
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