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在弹性应力以最大速度进行积累的地区,地震活动性最强.强烈的地震活动性可以表現为两种形式:或者是不很强的地震常常发生,或者是发生少数毁灭性的地震.前者相当于那些具有大量断裂或岩石强度較小的地区,后者相当于岩石强度較大的地区.任何地震区內,弹性应力或应变的平均积累速度、一定时期內的平均地震頻度与地震能量就是地震活动性的定量指标. 本文的任务是根据近代的地震仪器賽料和三千年的地震历史資料,全面地研究中国的地震活动性.
Seismicity is the strongest in areas where elastic stress accumulates at maximum speed, and strong seismogenic activity can take two forms: either less frequent earthquakes or fewer devastating earthquakes, the former being comparable For those areas with a large number of fractures or less rock strength, the latter is equivalent to areas of greater rock strength. In any seismic area, the average rate of elastic stress or strain accumulation, the average seismic frequency over a period of time and the seismic energy are earthquakes The quantitative index of activity.The task of this paper is to comprehensively study the seismicity in China based on the modern seismic equipment data and the historical data of three thousand years of earthquake.