The existing ground motion physical stochastic model is extended to a stochastic model for
sequential ground motions by considering the spatial correlation between the mainshock
and aftershock. Considering the physical mechanism of ground motion generation and
propagation, the sequential ground motions are represented by the Fourier model of 16
physical random variables. Meanwhile, considering the spatial correlation between the
mainshock and aftershock, the model is more accurately represented by six two-dimensional …