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本文在中国大陆东部自777年至1984年(不包括东北深震)强地震之中,划分出24个组;在中国大陆西部自公元前193年至公元1991年的强地震之中,划分出21个组。由这些组的统计,对中国大陆东部和西部分别给出了强地震以成组形式发生的概率以及组内地震数目、组内相继两次地震时间间隔、地震组活动期长度和地震组活动区大小等地震组各参数的概率的估算方法与各种经验概率值。
This paper classifies 24 groups of strong earthquakes in the eastern part of mainland China from 777 to 1984 (excluding the deep earthquakes in northeastern China). Among the strong earthquakes in western China from 193 BC to 1991, 21 groups. According to the statistics of these groups, the probability of strong earthquakes occurring in groups and the number of earthquakes in the group are given respectively to the eastern and western regions of China. The time series of two seismic intervals, the length of the active period of the earthquake group and the active area of the earthquake group Size and other seismic group parameters of the probability of estimation methods and a variety of empirical probability values.