引言 用地下水氡资料对一定区域内地震危险性进行分析时,主要依据区内各水点水氡观测结果是否出现趋势变化,以及变化持续的时间和幅度。因此,正确判断水氡的变化是属于地震蕴育过程中地应力场变化的结果(地震前兆异常),还是非地震因素的影响(即正常动态),并从变化的观测资料中提取真正的地震信息,是取得良好预报效果的关键。 Introduction Groundwater radon data are used to analyze the risk of earthquakes in a certain area based on whether there is a trend change of water radon observation at each water point in the area and the duration and magnitude of change. Therefore, to correctly judge whether the change of water radon belongs to the result of the change of the geostress field (earthquake precursory anomaly) in the process of earthquake containment or to the influence of non-seismic factors (ie normal dynamic), and to extract the true earthquake from the changed observed data Information is the key to good forecasting.