Engineering ground motion parameters simulation and distribution characteristics analysis of Kumamoto M_J7.3 earthquake in 2016

In this paper, the empirical Green’s function method is used to simulate and analyze the main engineering seismic parameters of 47 strong stations from K-net of the M_J7.3 （M_W7.0） earthquake in Kumamoto county, Japan. The main conclusions are as follows: ① The basic spectrum simulation results fitted better, especially in the high frequency band 1–15 Hz; ② The simulated values of both peak ground acceleration and Arias intensity at the focal distance less than 50 km have the better fitting with observed values, they are diffused attenuating around the ellipse in the near field, and the simulated values of Arias intensity are greater than the observed values; ③ The predominant period fitting is good, as a whole, but there are larger differences in the local area. The simulated results cannot indicate the complexity of site condition.