【摘要】 2006年8月对清水河水氡进行异常核实发现,排除水点采样系统的变化和仪器标定的原因,2000年以来,该井水氡测值具有比较明显的“夏高冬低”的年变特征。分析认为,清水河水氡2005年8月开始出现的大速率转折下降的原因与采样系统发生了变化和原水口出水量逐步减小有关,是地震异常的可能性不大。更多还原

【Abstract】 Based on the verification of anomaly of radon in groundwater of Qingshuihe appeared on August,2006,it is found that the value of radon observed in groundwater from the well is of obvious annual variation characteristic,high in summer and low in winter since 2000,after excluding the change of sampling system and calibration of the instrument themselves.The turning decline with great rate for radon in underground water of Qingshuihe,having turned up since August,2005,is likely related to change of sampling system and gradual reduction of water flowing out from the original water gap,rather than the anomaly of earthquake.更多还原