| 巴伦台分量钻孔应变在呼图壁MS6.2地震前的短临异常初探 |
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| 引用本文： | 高丽娟,赵彬彬,邢喜民,滕海涛,韩桂红,艾萨·伊斯马伊力.巴伦台分量钻孔应变在呼图壁MS6.2地震前的短临异常初探[J].大地测量与地球动力学,2018,38(8):868-872. |
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| 作者姓名： | 高丽娟 赵彬彬 邢喜民 滕海涛 韩桂红 艾萨·伊斯马伊力 |
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| 摘 要： | 呼图壁地震前巴伦台分量钻孔应变出现显著压性短临异常变化，排除仪器、气象及环境等干扰因素，认为该异常可能为地震前兆异常。利用超限率和S变换时频分析方法提取该异常，结果显示，信号集中在1 440~10 min频段，NS分量最大信号强度为185×10-10，EW分量最大信号强度为140×10-10。探讨此类异常变化特征，并对其原因进行分析。
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| 关 键 词： | 钻孔应变 S变换 时频分析 短临异常 |
Short-Term Anomalies Detected at Balguntay Station’s 4-ComponentBorehole Strain before the Hutubi MS6.2 Earthquake,Xinjiang, China |
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| GAO Lijuan,ZHAO Binbin,XING Ximin,TENG Haitao,HAN Guihong,AISA Yisimayili.Short-Term Anomalies Detected at Balguntay Station’s 4-ComponentBorehole Strain before the Hutubi MS6.2 Earthquake,Xinjiang, China[J].Journal of Geodesy and Geodynamics,2018,38(8):868-872. |
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| Authors: | GAO Lijuan ZHAO Binbin XING Ximin TENG Haitao HAN Guihong AISA Yisimayili |
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| Abstract: | Analysis of the data from Balguntay station’s 4-component borehole strain shows significant short-term abnormal changes in pressure. We exclude interference from equipment, weather and the environment. We consider that the abnormal change is true and may be an earthquake precursor anomaly. The anomaly is extracted using the overrun rate and S-transform time-frequency analysis. The results show the signal is concentrated in the 1 440~10 min band. The maximum signal strength of NS and EW components are 185×10-10, 140×10-10. This article also discusses the characteristics of such anomalous changes and makes a preliminary analysis of the causes. |
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| Keywords: | borehole strain S-transform time-frequency short-term abnormal |
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