【摘要】 应用从属函数法分析了1988年1月~2007年9月华清4#泉的水氡资料,共提取出6次中期异常。其中前4次异常在异常结束后的8~24个月对应了发生在南北地震带、青藏高原北部的M≥7.3级远场强震,第5次为无震异常,第6次异常正在持续发展。对异常特征及其与地震的对应关系作了讨论,给出了远场强震时间预测的指标,并依据第6次异常开始出现的时间,对未来远场强震发生的时间段进行了中期预测。更多还原

【Abstract】 Water radon data were analyzed by the method of hypo-taxis function from Jan.1988 to Sep.2007 at Huaqing No.4 hot spring,and six times middle term anomalies were found.8～28 months after the end of the first four times anomalies,there occurred the M≥7.3 strong earthquakes in North and South seismic belt and north Qinghai-Xizang plateau,the fifth anomaly has no earthquake to relate and the sixth anomaly is developing.The relationship between anomaly characteristics and earthquakes are discussed and put forward index of time forecasting of earthquakes in far field in the future.更多还原