3D model of active faults in the North-South Seismic Belt

This fault model adopts a three-dimensional modeling method of active fault based on seismic activity. The focal mechanism solutions related to the target active fault are chosen by comparing their internal consistency or the consistency with the collected fault geometry data, and the selected solutions are used to construct the initial fault geometry. The initial geometry is further adopted to determine the earthquake relocation data related to the target fault. Subsequently, these earthquake relocations are employed to refine the fault geometry. Based on this method, a three-dimensional model of 369 active faults (segments) in the North-South Seismic Belt was constructed.

本断层模型采用基于地震活动的活动断层（active fault）三维建模方法。通过比对与目标活动断层相关的震源机制解（focal mechanism solutions）的内部一致性，或其与已收集的断层几何数据的一致性，筛选出符合要求的震源机制解，并利用筛选得到的解构建初始断层几何模型。进一步依托该初始几何模型，确定与目标断层相关的地震重定位数据。随后，利用这些地震重定位结果对断层几何模型进行细化。基于上述方法，构建了南北地震带（North-South Seismic Belt）内369处活动断层（段）的三维模型。