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本文使用地震模式识别应用程序包—简称“PR”程序包(the packag(?)of program-to apply algorithms of pattern rccognition)提供的 CORA-3修改方法,将川滇地区的地震频度衰减系数 h 值、小震群频次 n 及其定量描述 k值、震情指数 A 值,震中在空间分布上的集中度 c 值和 b 值作为强震前的一组震兆加以综合分析,结果表明,h 值≤1.0、k 值≤0.85,在一定空间范围内出现小地震集中现象,持续的低 b 值异常很可能是强震前的重要震兆。震情指数在综合分析中所起作用较弱,而小震群的频次则未起作用。经过 k 值试验和单项试验表明结果是稳定的。
This paper uses the CORA-3 modification method provided by the packag (?) Of program-to-apply algorithms of pattern seismology application package (abbreviated as “PR” package) Value of small earthquakes frequency n and its quantitative description of k value, earthquake index A value, the concentration of the epicenter in the spatial distribution of c and b value as a set of strong shock before a group of shock trillion to be a comprehensive analysis of the results show that h If the value is less than or equal to 1.0 and the value of k is less than or equal to 0.85, a small earthquake concentration phenomenon occurs in a certain spatial range. The continuous low b value anomaly is likely to be an important earthquake precursor before strong earthquakes. The sentiment index played a weak role in the comprehensive analysis, but the frequency of the small swarm was not effective. After k value test and single test showed that the result is stable.