| 2016年新疆轮台MS 5.3地震序列尾波Qc值分析 |
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| 引用本文： | 李姗姗,张小飞,李晓东,夏爱国.2016年新疆轮台MS 5.3地震序列尾波Qc值分析[J].地震地磁观测与研究,2022,43(3):18-24. |
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| 作者姓名： | 李姗姗 张小飞 李晓东 夏爱国 |
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| 作者单位： | 1. 中国新疆维吾尔自治区 841000 新疆维吾尔自治区地震局库尔勒地震监测中心站;2. 中国乌鲁木齐 830011新疆维吾尔自治区地震局 |
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| 基金项目： | 新疆地震科学基金课题(项目编号:202124) |
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| 摘 要： | 基于Sato单次散射模型，利用轮台地震台单台记录，计算并分析2016年1月14日新疆轮台MS5.3地震及余震序列尾波Qc值震后变化，拟合得出Qc值随频率的变化关系为Qc (f) =（18.0±3.19）f1.184±0.072。结果表明，Qc值在序列初期起伏较大，随着强震后能量的释放，Qc值趋于平缓；低频段的Qc值在较大余震发生前有显著变化；不同中心频率点的Qc值变化形态不一致。对Qc值变化特征的研究，可为地震预报提供参考依据。
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| 关 键 词： | 轮台MS 5.3地震 Sato模型 尾波Qc值 |
Analysis on coda Qc-value of the Luntai,Xinjiang MS 5.3 earthquake sequence in 2016 |
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| LI Shanshan,ZHANG Xiaofei,LI Xiaodong,Xia Aiguo.Analysis on coda Qc-value of the Luntai,Xinjiang MS 5.3 earthquake sequence in 2016[J].Seismological and Geomagnetic Observation and Research,2022,43(3):18-24. |
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| Authors: | LI Shanshan ZHANG Xiaofei LI Xiaodong Xia Aiguo |
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| Institution: | 1. Korla Earthquake Monitoring Center Station, Earthquake Agency of Xinjiang Uygur Autonomous Region, Korla 841000, China;2. Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China |
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| Abstract: | Based on the Sato single scattering model and using the digital waveform data recorded by Luntai Seismic Station for the aftershock sequence of the Luntai,Xinjiang MS 5.3 earthquake on January 14,2016,the variation of coda Qc-value after the earthquake is analyzed and the fitting relationship of Qc-value with frequency is calculated as Qc(f)=(18.0±3.19)f1.184±0.072.The results show that the Qc-value fluctuates greatly at the beginning of the sequence and tends to be flat with the energy release of strong earthquake.The Qc-value of the lower frequencies changes significantly before the large aftershock.For different central frequency points,the variation form of Qc-values is inconsistent.The study on the variation characteristics of Qc-value can provide a basis for earthquake prediction. |
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| Keywords: | Luntai MS 5 3 earthquake Sato model coda Qc-value |
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