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| | Abstract | | Seismic interferometry is a useful redatuming technique to generate the pseudo reflection data by cross-correlating the passive seismic data. In this study, we newly observed passive seismic data with a 5 km survey line with 250 m receiver intervals including a 1 km high-density survey line with 50 m intervals in Narita city, and applied seismic interferometry to P-coda waves of local earthquakes for imaging the subsurface structure. We obtained a high-resolution interferometric imaging result in a 1 km shallow basin, and clear reflection boundary between the sedimentary layer and the pre-Neogene basement. This result corresponds to existing profiles by P wave and S wave reflection surveys and velocity information. |
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