【摘要】 讨论了潮汐振幅因子γ值的变化幅度和频度异常的特征及含义。借助Ｆ统计检验理论研究了潮汐因子γ值的合成和异常定量化方法，提出了可用于定量描述异常程度的“异常指数”和异常检验准则。异常定量化研究的结果表明，震前异常呈有序迁移特征，并在异常时间和空间上与地震相关。研究结果与该区域现今大地测量结果相一致。更多还原

【Abstract】 In this paper the characteristics and the meanings of amplitude and frequency anomalies of tidal amplitude factor γ are discussed, and the composision and the quantity for γ value anomaly are explored by using the F -detection. The concept “anomalous index”, which can indicate the anomalous level, and the anomalous criterion are proposed. The research results show that the ordering of anomalies before large earthquake and the correlativity of anomalous time and space with earthquake may be discovered. The migration direction of anomalies is accorded with the dynamic direction obtained from the geodesy.更多还原