内蒙古中西部地区中小地震震源参数反演和相互关系探讨

The Inversion and the Study on Correlation of Source Parameter of Medium Earthquake in Midwest Area of Inner Mongolia

利用呼和浩特数字化地震遥测台网 7个子台记录的 9个质量较高的地震事件资料 ,基于遗传算法 ,采用Atkinson方法 ,计算得到了内蒙古中西部地区的品质因子Q值和非弹性衰减系数。在所研究的频率范围内 ,非弹性衰减系数c(f)与频率f的变化关系不明显 ,品质因子Q和频率f有很好的线性关系 :Q (f) =1 1 6 8f1 0 0 0 。采用Moya方法反演了地震的震源参数 ,并对它们之间的相互关系进行了讨论 ,结果显示 ,震源参数间具有较好的线性关系。详细介绍了Atkinson方法和Moya方法的原理和计算步骤。

In this paper, the quality factor and the non-elasticity coefficient have been calculated using seven stations and nine events of Hohhot digital seismic network based on genetic algorithm and Athinson method. Within the scope of frequency for studying, the correlation of the non-elasticity coefficient c(f?) and frequency is not obvious, the quality factor Q and frequency f have good linearity connection,Q(f)=116.8f 2?.000. On the other hand,the source parameters are inverted by using Moya method, and the relation among the source parameter is discussed. The result shows that the correlation of the source parameter has a good linearity connection. The paper has introduced the principal and steps of the Athinsonand Moya Method.