阿图什市5.2级地震与于田6.2级地震前兆异常分析  

The precursory anomaly analysis of the Atushi M_S 5.2 earthquake and Yutian M_S 6.2 earthquake,Xinjiang

作　　者：冯英 潘振生 徐衍刚 赖爱京 龚固斌 张治广 

机构地区：[1]阿克苏中心地震台,中国新疆维吾尔自治区843000

出　　处：《地震地磁观测与研究》2013年第3期6-12,共7页Seismological and Geomagnetic Observation and Research

基　　金：新疆地震科学基金(20120203)课题资助

摘　　要：利用阿克苏台网中心前兆观测数据,采用动态分析、形态法对新疆阿图什市M_s5.2地震和于田县M_s6.2地震进行系统分析。发现两次地震前,阿合奇台地倾斜资料、乌什台水管倾斜资料、伸缩仪资料、体应变及辅助测项钻孔水位和静水位数据、地电数据均出现明显的震前异常。其中水管仪、伸缩仪、体应变、地倾斜表现为打破年变,水管仪震前几天出现高频抖动、日变形态畸变;体应变辅助测项钻孔水位和静水位、地电震前表现为突变。In this Paper, Combined with the precursory observation data of Akesu Central Seismic Station, the methods of dynamic and morphological analysis are used to comprehensively an- alyze the Xinjiang Atushi city Ms 5.2 earthquake and Yutian County Ms 6. 2 earthquake. According to the study, it is found that the Ground Inclinometer data of Akqi Seismic Sta- tion, the Water Tube Tiltmeter data, the Extensometer data, the Volumetric Strain data and it＇s auxiliary measuring water level data in boreholes, the Static water level data and the Ge- oelectric data of Wushi Seismic Station emerged obvious precursory anomalies before the two earthquakes. The trend anomaly of the Water Tube Tiltmeter data, the Extensometer data, the Volumetric Strain data and the Ground Inclinometer data expressed as break the annual variation. The short-term anomaly of the Water Tube Tiltmeter data appeared as high-fre- quency jitter and shape distortion of the diurnal variation in the days before the two earth- quakes. The Volumetric Strain Auxiliary measuring water level data in boreholes, the Static water level data and the Geoelectric data manifested as mutation before the two earthquakes.

关 键 词：阿克苏台网 前兆资料 异常分析 

分 类 号：P315.72[天文地球—地震学]