| 辽宁海城-岫岩地区尾波Q值研究 |
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| 引用本文： | 李宇彤,李广平,李海林,李芳.辽宁海城-岫岩地区尾波Q值研究[J].东北地震研究,2008,24(2). |
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| 作者姓名： | 李宇彤 李广平 李海林 李芳 |
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| 作者单位： | 辽宁省地震局,辽宁,沈阳,110034 |
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| 摘 要： | 本文利用Sato单次散射模型,研究1999年至2007年辽宁海城-岫岩地区尾波Q值随时间的变化情况及1999年岫岩5.4级地震和2000年5.1级两次中强地震发生阶段该地区的尾波Q值变化。计算结果表明:该区在地震活跃阶段,Qc值随时间变化起伏较大,平均值相对较高,在岫岩5.4级主震前有短时升高现象,之后Qc值并没有明显的降低,直到强余震序列结束之后Qc值逐步降低,趋于平稳,通过对比该区在地震活跃阶段与平静阶段的Qc值变化,可以为未来该区的强震预测提供参考依据。
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| 关 键 词： | 海城-岫岩地区 Sato单次散射模型 尾波Q值 |
RESEARCH ON THE CODA Q VALUE OF HAICHENG-XIUYAN AREA IN LIAONING |
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| LI Yu-tong,LI Guang-ping,Li Hai-lin,Li Fang.RESEARCH ON THE CODA Q VALUE OF HAICHENG-XIUYAN AREA IN LIAONING[J].Seismological Research of Northeast China,2008,24(2). |
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| Authors: | LI Yu-tong LI Guang-ping Li Hai-lin Li Fang |
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| Abstract: | The changes of quality factor Q was studied using the single scattering attenuation model of Sato in Liaoning Haicheng-Xiuyan region from 1999 to 2007 and before and after the two strong earthquakes in 1999 Xiuyan Ms5.4 and in 2000 Xiuyan Ms5.1.The results show that: in the seismic active phase,Q value changes more ups and downs over time and maintains high average value.Before the main shock Xiuyan Ms5.4 Q value increased in the short-term and after reduced no apparently until the strong aftershock sequence was end gradually and stabilized.By comparing Q value in the seismic active and quiescence phase we can deduce that Q value changes before earthquake can be used in earthquake prediction for the future of the area. |
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| Keywords: | Haichen-Xuyan area the single scattering model of Sato coda Q value |
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