ATTENUATION RELATIONSHIPS AND AMPLIFICATION MAP FOR GROUND MOTION IN RATHER-LONG PERIOD RANGE

Abstract

Attenuation relationships are proposed for acceleration response spectrum and Fourier spectrum of ground motion in rather-long period range using strong motion records observed in Japan. Amplification maps are also developed to compensate the attenuation relationships for site amplification characteristics. Comparisons with the ground motion calculated by a three-dimensional finite difference method validate the attenuation relationships and amplification maps. Ground motion during hypothetical great earthquakes is estimated by the present method, showing the method enables site-specific ground motion prediction at arbitrary sites all over Japan.