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| | Abstract | | In order to verify the validity of the seismic wave interferometry analysis of microtremors observed in a broadband linear array in Fukushima Prefecture, seismic interferometry analysis was applied to the records observed with the Hi-net stations around the linear array. As a result, we could obtain the group velocity with the signal-to-noise ratio which exceeded 10 at periods of about 1 to 7 sec by the seismic interferometry analysis using about one month records of the short-period microtremor of Hi-net stations. In addition, it became clear that the group velocity calculated from the combination of observation stations with similar distances varied greatly. |
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