Abstract
A new prediction method for response spectra of earthquake ground motion is proposed. In this method the effects of rupture propagation on the source fault is evaluated theoretically by summing up the simplest waveform, named "Characterized Green's Function (CGF)", which satisfies the omega square model. The response spectra estimated by an existing attenuation equation is modified by the factor representing the effect of fault rupture propagation and radiation patterns, which is obtained on the basis of CGF. We verify the proposed method by comparing it with the results from the Stochastic Green's Function method in terms of a simple earthquake fault model. We also apply the proposed method to simulate the ground motions during the 2007 Niigataken Chuetsu-oki Earthquake. It is concluded from these comparison that the proposed method can estimate the response spectra of earthquake ground motion more stably and reasonably than the Stochastic Green's Function method.
