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| | Abstract | | We retrieved the preliminary seismic source model during this earthquake through a multiple time-window waveform inversion using the relatively low-frequency strong motion records (0.001-0.05Hz) observed at K-NET and KiK-net stations. In this inversion analysis, the effects of 3-D inhomogeneity of underground structure were considered in the computation of green's function. The present slip model showed a fairly large slip distribution at the deeper part of fault zone, as well as slip concentration at the shallow part of fault zone. This feature is fairly consistent with many other source models assuming 1-D layered structure model and using tsunami waveforms, and it is also roughly consistent with the discussions of strong-motion-genration-area at the deeper part of fault zone. |
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