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Title:: Prediction Efficiency of the Water Radon in Eryuan Hot Spring and Its Hydrochemical Characteristics

作者:: 钟骏¹; 王博¹; 2; 晏锐¹; 李庆³; (1.中国地震台网中心,北京 100045; 2.中国地震局地质研究所地震动力学国家重点实验室,北京 100029; 3.云南省地震局洱源地震台,云南洱源 671200)

Author(s):: ZHONG Jun¹; WANG Bo¹; 2; YAN Rui¹; LI Qing³; (1.China Earthquake Networks Center,Beijing 100045,China;2.State Key Laboratory of Earthquake Dynamics,Institute of Geology,China Earthquake Administration,Beijing 100029,China;3.Eryuan Seismic Station,Yunnan Earthquake Agency,Eryuan 671200,Yunnan,China)

Keywords:: water radon in Eryuan hot spring; prediction efficiency; hydrochemical characteristics

摘要:: 利用 Molchan 图表法对洱源温泉水氡观测资料进行预测效能检验,并开展了温泉水化学组分、氢氧同位素和水循环特征研究。结果表明:①Molchan图表法检验结果显示,洱源水氡出现高值时,对观测点附近中强以上地震反应较灵敏,优势对应地震时间段为90 d以内; ②洱源温泉井的水化学类型为HCO₃·SO₄-Na,与周边地表水体及浅层地下水无直接水力联系; ③洱源温泉井水属于“部分平衡水”,具有深部来源特征。

Abstract:: The prediction efficiency of the water radon in Eryuan hot spring was tested by using Molchan diagram method,and the chemical composition,hydrogen and oxygen isotopes and water cycle characteristics of the spring water were studied.The results show that:①High value of water radon in Eryuan hot spring is more sensitive to the medium-strong earthquakes in the vicinity,and the most probable predictive period is less than 90 days before the earthquake event; ②The hydrochemical type of Eryuan hot spring is HCO₃·SO₄-Na,which has no direct hydraulic relations with the surrounding surface water and shallow groundwater; ③The water in Eryuan hot spring belongs to “partially-balanced water” and gets supply from deep source.