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| | Abstract | | I report about the formulation and its validation using real microtremor records, for the CCA method that use small arrays of seismographs. This formulation using the observed records in site and those of the huddle tests takes the followings into account: the difference of characteristics of simple seismometers, their setting condition and very local amplification below them. It is imagined that this formulation can perform the system correction if the following two conditions are fulfilled: all channels have common power spectra of input ground motion except very local amplification effect, and the phase difference among channels due to the installation situation and the very local amplification effect is negligible. |
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