Abstract:Strong ground motions are influenced by multiple factors, such as the seismic source, propagation path, and local site conditions. However, existing ground motion parameter models developed from large-scale regional observation records often lead to parameter inconsistency, increased uncertainty, or insufficient accuracy when applying the stochastic finite-fault method to simulate near-field destructive ground motion fields. This is due to the insufficient consideration of regional characteristics in parameter modeling. This paper outlines several aspects requiring further research in near-field high-frequency ground motion simulation technology and systematically reviews the progress and unresolved problems in related ground motion model parameters from four perspectives: geometric scale and slip distribution of the source fault, geometric spreading and anelastic attenuation of ground motions, high-frequency attenuation parameter of the source spectrum, and local site effects. According to strong motion observation records, the investigation of statistical patterns, intrinsic relationships, and interaction mechanisms of ground motion model parameters in small-scale regions and the development of refined simulation methods for ground motion fields are of practical significance for assessing the reliability of simulation results. Furthermore, this research holds academic value and provides engineering guidance for postdisaster reconstruction, emergency response, structural dynamic analysis, and seismic design while offering insights for earthquake-based probabilistic seismic demand analysis of structures.