Simulation of ground motions in the Korean peninsula using a model with a GIT-based spectral decomposition algorithm

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 were simulated using a model with a GIT-based spectral decomposition algorithm. The algorithm was adopted to determine the constituent parameters (source effect, path effect, site effect) of the Fourier amplitude spectrum (FAS) while considering Korea’s seismological characteristics. The accuracy of the GIT-based spectral decomposition algorithm for FAS and the ground motion simulation (GMS) model with the calculated FAS values was verified.