续外芬, 毕青, 吴富焕, 赵小艳, 付虹. 滇南、滇西南地区尾波Qc 值研究[J]. 云南大学学报(自然科学版), 2012, 34(S2): 78-85.
引用本文: 续外芬, 毕青, 吴富焕, 赵小艳, 付虹. 滇南、滇西南地区尾波Qc 值研究[J]. 云南大学学报(自然科学版), 2012, 34(S2): 78-85.
XU Waifeng, BI Qing, WU Fu-huan, ZHAO Xiao-yan, FU Hong. Research of coda Qc -Value of Southern and southwestern Yunnan[J]. Journal of Yunnan University: Natural Sciences Edition, 2012, 34(S2): 78-85.
Citation: XU Waifeng, BI Qing, WU Fu-huan, ZHAO Xiao-yan, FU Hong. Research of coda Qc -Value of Southern and southwestern Yunnan[J]. Journal of Yunnan University: Natural Sciences Edition, 2012, 34(S2): 78-85.

滇南、滇西南地区尾波Qc 值研究

Research of coda Qc -Value of Southern and southwestern Yunnan

  • 摘要: 利用滇南、滇西南地区14个数字地震台站记录到的2005年1月至2010年9月间的ML2.5级地震数字波形资料,采用Aki单次散射模型,计算了台站周围50km范围内共283条地震记录的尾波Qc和Q0值.结果表明:滇南地区尾波Qc值与频率的关系为Qc(f)=65.7f 0.83;滇西南地区Qc值与频率的关系为Qc(f)=64.5f 0.903(沧源台除外).两区域平均Q0值相比云南其他构造活动强烈区域的Q0值稍高,但相比其他区域仍然偏低,属于较高构造活动地区.尾波衰减Q-1c值变化与云南武定地区和施甸地区的结果比较接近,具有构造运动活跃、地震活动较频繁的低Qc值特征.

     

    Abstract: The coda-wave-attenuation-quality factor Q0 in Southern and southwestern Yunnan is estimated using Aki`s single-scattering attenuation model based on 283 digital seismic waveforms recorded by 14 regional digital seismic stations within 50km from January 2005 to September 2010.The result shows that the relationship between Q0 and f of southern Yunnan can be described as Qc(f)=65.7f 0.83,the relationship between Q0 and fof southwest Yunnan can be described as Qc(f)=64.5f 0.903.The values are a little higher compared with the other areas of Yunnan with strong tectonic seismic activity,but steel belongs to inferior level ,and it belongs to the tectonic activity area.Changes of coda wave attenuation Q-1c is close to Wuding and Shidian area of Yunnan,all have the low Qc value features of active tectonic movement and frequency seismic activity.

     

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