甘肃及邻区数字化气氡观测及其地震前兆监测效能评估  

Digital Gas Radon Observation and Monitoring Efficiency Evaluation in Gansu and Its Adjacent Areas

作　　者：张昱 李英[2] 李永强[3] 赵小茂[4] 王新[4] 李春玲 王先 

机构地区：[1]甘肃省地震局,兰州730000 [2]宁夏回族自治区地震局,银川750001 [3]青海省地震局,西宁810001 [4]陕西省地震局,西安710068

出　　处：《地震研究》2008年第3期228-232,共5页Journal of Seismological Research

基　　金：国家科技支撑计划“十一五”子专题(2006BAC01B02-03-02)资助

摘　　要：分析了甘肃及其附近地区数字化气氡观测资料的年、月、日动态特征,根据以往的水氡震例评估了其地震前兆监测效能,认为从气氡观测资料中有可能识别出以破年变为标志的中期前兆异常,但很难识别以阶变和脉冲为特征的短期异常。另外,气氡的动态稳定性不如水氡,目前以气氡观测完全取代水氡观测的条件还不成熟,应经过大量的长期观测实践再作抉择。There have been 13 digital observation stations of gas radon in Gansu and its adjacent areas so far. We analyze the yearly, monthly and daily dynamic variation characteristics of gas radon, and evaluate their monitoring efficiency by comparing them with water-radon records. The result shows that it is possible to get the mediumterm precursory anomaly characterized by breaking annual variation, but hard to get the short-term precursory anomaly characterized by step-change and pulse. For gas-radon is less stable than water radon, it＇s not mature completely replacing water radon observation by gas radon observation, and a great deal of observation practice is also needed.

关 键 词：气氡 动态特征 监测效能 甘肃及邻区 

分 类 号：P315.723[天文地球—地震学]