%0 Journal Article %T 用超限率分析法提取精河6.6级地震前的高频信号异常 %T Extracting High Frequency Signal Anomalies before the Jinghe MS6.6 Earthquake with Overrun Rate Analysis %A 高丽娟 %A 李尚伟 %A 滕海涛 %A Gao Lijuan %A Li Shangwei %A Teng Haitao %J 中国地震 %@ 1001-4683 %V 35 %N 1 %D 2019 %P 117-125 %K 精河MS6.6地震;定点形变;超限率分析;高频信号;地震前兆 %K Jinghe MS6.6 Earthquake;Fixed point deformation;Overrun rate analysis;High frequency signal;Earthquake precursor %X 2017年精河MS6.6地震震前，尼勒克台、巩留台和小泉沟台钻孔应变仪记录到了显著的高频信号异常变化，经现场异常落实确认异常是可靠的。本文通过超限率分析方法提取类似信号，定量描述了震前异常信号强度，结果表明地震前3个台不同程度出现超阈值现象，异常显著，其中2个台为临震变化。 %X Before the MS6.6 earthquake happened in Jinghe, the borehole strain gauges of Nilka, Gongliu and Xiaoquangou seismic stations recorded significant abnormal changes in high-frequency signals, and it was reliable to confirm the abnormalities through on-site abnormalities. In this paper, the similar signals are extracted by the over-limit rate analysis method, and the abnormal signal intensity before the earthquake is quantitatively described. the results show that the super-threshold phenomenon occurs in different degrees before the earthquake, and the anomaly is remarkable. Two of them are changes in the impending earthquake. %R %U http://zgdz.eq-j.cn/zgdz/ch/reader/view_abstract.aspx %1 JIS Version 3.0.0