7级地震前地下流体前兆异常特征及判定指标的研究

摘要

为了跟踪新疆及邻近地区未来1～2年的7级震情,以中国地震局地下流体学科技术协调组2011年制定的评估标准,对新疆地震地下流体观测网进行了评估和给予了综合评价;采用评估后达到A、B类的观测点月均值资料,使用月均值平滑、趋势速率、相对变差、从属函数等方法,提取了新疆及邻近地区7组7级以上地震的地下流体前兆异常特征,总结和归纳了其大震判定指标.%In order to tracking earthquake with Ms7.0 in Xinjiang and its adjacent region in the next few years, this paper uses the evaluative criteria to evaluate seismic underground fluid observation network in Xinjiang. Using monthly mean data of A and B grade stations to calculate with smoothing 、trend 、relative variation and subordinate function, they extracted characteristics of underground fluid precursory anomaly before seven group of earthquake with Ms7. 0 in Xinjiang and its adjacent region and summarized decision index.