| 1998年临猗5.0级地震Q值的时间变化特征 |
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| 引用本文： | 王卫东,张永志,狄秀玲,王平.1998年临猗5.0级地震Q值的时间变化特征[J].地震地磁观测与研究,2004,25(4):56-60. |
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| 作者姓名： | 王卫东 张永志 狄秀玲 王平 |
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| 作者单位： | 中国西安,710054,长安大学地质工程与测绘工程学院;中国西安,710068,陕西省地震局 |
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| 基金项目： | 陕西省科学技术项目(95K12-G9)，地震联合基金项目(95208)资助 |
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| 摘 要： | 利用西安数字地震遥测台网记录的数字地震资料，采用P波初动半周期残差法求得了1998年7月临猗5．0级地震前后不同路径的Q值变化，发现在地震发生前Q在87～203之间，震后Q在67～164之间，震前震中区附近出现了明显的高Q值异常。结果表明，地震前的高Q值异常可以作为地震预测的一种手段。
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| 关 键 词： | Q值 P波初动半周期 地震预测 |
| 文章编号： | 1003-3246(2004)04-0056-05 |
| 修稿时间： | 2004年1月27日 |
Characteristics on the temporal change of coda Q of the Linyi Earthquake with ML5.0 in 1998 |
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| Wang Weidong,Zhang Yongzhi,Di Xiuling,Wang Ping.Characteristics on the temporal change of coda Q of the Linyi Earthquake with ML5.0 in 1998[J].Seismological and Geomagnetic Observation and Research,2004,25(4):56-60. |
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| Authors: | Wang Weidong Zhang Yongzhi Di Xiuling Wang Ping |
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| Institution: | Wang Weidong,Zhang Yongzhi,Di Xiuling and Wang Ping
School of Geological Engineering and Surveying Engineering,Chang'an University,Xi an 710054,China
Earthquake Administration of Shanxi Province,Xi an 710068,China |
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| Abstract: | By using the digital data recorded by xi'an digital telemetry seismic network,the temporal change in coda Q before and after Linyi earthquake with ML5. 0 in July,1998 is determined through the method for half period of the first arrival P wave. It is pointed that the Q value is 87-203 before the earthquake and is 67-164 after the earthquake, and clearly anomaly with high Q value appeared in the nearby areas of the epicenter before the earthquake. The result shows this anomaly with high Q value before an earthquake can be used as a method for earthquake forecast. |
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| Keywords: | Q value half period of the first arrival of P wave earthquake forecast |
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