摘要
从地震时间排列是否有序和相关的观点出发,用韦布尔分布函数的形状参数m及与m密切相关的地震时间统计量β,分析1975年以来伊舒断裂带地震活动趋势和1990年10月21日盘石大旺M_L4.3级地震的异常反映。结果表明,m、β两项指标是地震趋势分析和地震预报有研讨价值的定量前兆指标。
According to view point of order and correlation of earthquake sequence,seismicity trend of Yishu fault belt has been analized since 1975 by means of form parame-term of Weibull distribution function and time statistic βof sequence. Meanwhile,The precur-sor of Panshi earthquake with magnitude M_L=4.3,Which occurred in 2lst Oct.,1990,is alsodiscussed.