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本文研究了华北121个地震断层的错动方式,40个地震断层的走向,15个地震断层的破裂方式与扩展方向。在此基础上发现了华北板内地震断层特征与上地幔隆起带之间的某些规律性联系。作者认为:由于上地幔软流圈的异常活动,上地幔顶部隆起的底辟作用以及重力均衡作用,华北大陆地壳正在经历着一种透镜化的拉薄改造过程,据此可以解释华北板内地震断层的特征,并进而探讨华北板内地震高强度性的原因。
In this paper, the dislocation patterns of 121 seismic faults in North China, the strike of 40 seismic faults and the rupture modes and propagation directions of 15 seismic faults are studied. On this basis, some regular relationships between the fault features in the North China intraplate and the uplift of the upper mantle are found. The author believes that the North China continental crust is experiencing a leveled transformation process due to the anomalous upper mantle asthenosphere, the diapiric uplift of the upper mantle, and the gravitational balance. Therefore, it is possible to explain the intra-North China earthquake Fault characteristics, and then explore the reasons for the high strength of the North China intra-plate earthquake.