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对倾向断层中地震的动力学模拟表明,不对称的近源地面运动是由这类断层不对称的几何形态引起的。在初始应力大小相同的情况下,逆(冲)断层引起的地面运动要比正断层引起的地面运动大2倍或更多。无论是在逆(冲)断层还是正断层引起的地震中,上盘的运动都比下盘的大。地震产生的应力场与地球自由表面的相互作用导致了与时间相关的正应力的产生,从而造成了正断层与逆(冲)断层之间的不对称性。断层上、下两盘的不对称性是由于断层两盘质量和几何形态的不对称性而形成的。
The dynamic simulations of the earthquakes in the dip-fault show that asymmetric near-surface ground motion is caused by the asymmetric geometry of such faults. In the case of the same initial stress, the ground motion caused by the reverse (thrust) fault is 2 times or more larger than the ground motion caused by the normal fault. Whether in the reverse (red) fault or normal fault caused by the earthquake, the upper disc movement than the lower disc. The interaction of the stress field generated by the earthquake with the free surface of the Earth leads to the generation of time-dependent normal stresses, resulting in the asymmetry between the normal and reverse faults. The asymmetry of the two plates above and below the fault is due to the asymmetry of the mass and geometry of the two plates in the fault.