【摘要】 分析新疆10泉、04泉及哈萨克斯坦卡帕尔—阿拉善4井、下卡姆卡井氦气(He)含量变化的源兆、场兆、远兆的映震特征,地震前兆异常表现为:上升(或下降)幅度、速率变化超出正常范围,具有较好的重复性,测值遵循背景值—趋势性上升(或突升)—恢复至背景值;趋势性下降(或突降)—恢复至背景值的变化过程。各监测点氦气异常形态、异常持续时间、异常幅度同源兆、场兆、大震远兆没有明显的关系;由于各观测点的水文地质条件和地球化学环境不同,不同监测点氦气映震能力有较大差异,其中新10号泉和卡帕尔—阿拉善4井氦气的映震能力较强。更多还原

【Abstract】 In this paper,the seismic precursor features for helium of No.KKNo.4 spring in Xinjiang and No.4 well of Kaparr-Alashan,Shakamuka well in Kazakhstan are analyzed.The precursor features for helium shown as:The rising range and velocity change repeatedly exceeded normal range;background value showed an increasing or decreasing tendency and then recovered.There is not obvious relationship between anomaly curve,anomalous duration,anomalous amplitude of helium and source precursor,field precursor,far-field precursor in each observation point.Because of various hydrogeology condition and geochemical environment,earthquake reflecting ability of helium had a greater difference in some observation point,for instance:No.10 spring and No.4 well of Kaparr-Alashan are far more better than No.4spring and Shakamuka well.更多还原