The stochastic method is applied to simulate strong ground motions at seismic stations of seven metropolises in South Korea, creating an earthquake scenario based on the causative fault of the 2016 Gyeongju earthquake. Input parameters are established according to what has been revealed so far for the causative fault of the Gyeongju earthquake, while the ratio of differences in response spectra between observed and simulated strong ground motions is assumed to be an adjustment factor. The calculations confirm the applicability and reproducibility of strong ground motion simulations based on the relatively small bias in response spectra between observed and simulated strong ground motions. Based on this result, strong ground motions by a scenario earthquake on the causative fault of the Gyeongju earthquake with moment magnitude 6.5 are simulated, assuming that the ratios of its fault length to width are 2:1, 3:1, and 4:1. The results are similar to those of the empirical Green’s function method. Although actual site response factors of seismic stations should be supplemented later, the simulated strong ground motions can be used as input data for developing ground motion prediction equations and input data for calculating the design response spectra of major facilities in South Korea.

A B S T R A C T
1. 서 론
2. 본 론
    2.1 추계학적 방법
    2.2 경주지진 원인단층에 의한 추계학적 강진동 모사
    2.3 경주지진 원인단층의 시나리오 지진에 의한 추계학적 강진동모사
    2.4 경험적 그린함수 방법에 의한 강진동 모사 결과와의 비교
3. 결 론
REFERENCES

• 최호선(한국원자력안전기술원 원자력안전연구실) | Choi Hoseon (Department of Nuclear Safety Research, Korea Institute of Nuclear Safety) Corresponding author