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本文通过对华北地震区第三、第四活动期强震(M≥6 3/4)的时序演进和震场迁移进行了对比分析,发现这两个活动期的强震之间存在着时序对应关系。并由此出发对华北地震区第八幕最大地震的发生时间及地震活动区域作了推测。文章同时对甘肃、宁夏地震区的强震也作了时序对比,认为华北地震区在第八幕后将有较长时间的平静,强震活动将转移到西部的甘肃、宁夏地区。
By comparing and analyzing the temporal evolution and the earthquake field migration of the third and fourth active earthquakes in North China earthquake area (M≥6 3/4), we find that there is a time-series correspondence between strong earthquakes in these two active periods relationship. Based on this, we made a speculation on the occurrence time of the largest earthquake in Eighth Earthquake and the area of seismic activity in North China earthquake area. At the same time, the paper also compares the strong earthquakes in Gansu and Ningxia earthquake regions. It is believed that there will be a long period of calm in the North China earthquake zone after the eighth act, and the strong earthquake activity will be transferred to the western Gansu and Ningxia regions.