Simulation of ground motions in the Korean peninsula using a stochastic model with generalized inversion technique

Abstract

In low to moderate seismic regions such as the Korean peninsula, it is difficult to perform seismic hazard analyses to construct hazard maps and curves because only a limited number of strong ground motion records is available. In this study, to solve such obstacles, ground motions are simulated using a stochastic model for Fourier amplitude spectrum (FAS) in frequency domain and shaping window model in time domain. The generalized inversion technique is adopted to determine the seismological characteristics (source, path, and site effects) of the FAS for Korean region. The validity of the source, path, and site effects obtained from the GIT and that of simulated ground motions is verified.