Abstract
Attenuation relations of peak ground acceleration, peak ground velocity, and acceleration response spectrum in both horizontal and vertical components are estimated by regression analyses of California strong-motion data set, which contains many near-source records of shallow inland earthquakes. These attenuation relations can take into account the effects of fault extension, reflection from Moho, and nonlinear amplification of holocene stratum. By comparing with Japan inland earthquake data, it is confirmed that these attenuation relations are applicable to the estimation of strong motions on pre-Quaternary and Pleistocene strata for Japan inland earthquakes. However, in the estimation on Holocene stratum the applicability are decreased because area-dependent variations of soil amplification are large.
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