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利用2009~2013年间新疆数字地震台网中12个地震台所记录的34个地震事件的数字地震波形资料,以南天山西段及交汇区作为研究区,采用3段几何衰减模型及Atkinson联合反演方法对地震波形资料进行非弹性衰减研究,得出介质品质因子Q(f)与频率的关系:Q(f)=337f0.577。为验证不同时段的地震事件对Q(f)计算结果是否有影响,将上述研究中2009年发生的前24个事件保持不变,对后10个事件做3次更换研究,分别得到介质品质因子Q(f)与频率的关系:Q(f)=329f0.565;Q(f)=324f0.520;Q(f)=363f0.526。结果表明不同时段内的地震事件对Q(f)值的影响不大,采用Atkinson联合反演方法计算介质品质因子Q(f)较为稳定、可靠。
Based on the digital seismic waveform data of 34 seismic events recorded by 12 seismograph stations in Xinjiang Digital Seismic Network from 2009 to 2013, the western section of South Tianshan and the intersection area were used as the study area. The 3-stage geometric attenuation model and the Atkinson joint inversion method The inelastic attenuation of the seismic waveform data is used to get the relationship between the quality factor Q (f) and the frequency of the media: Q (f) = 337f0.577. In order to verify whether the seismic events at different time periods have any influence on the Q (f) calculation results, the first 24 events in the above study in 2009 are kept unchanged, and the next 10 events are replaced by 3 times to obtain the medium quality factor Relationship between Q (f) and frequency: Q (f) = 329f0.565; Q (f) = 324f0.520; Q (f) = 363f0.526. The results show that the seismic events in different time periods have little effect on the Q (f) value, and the Q (f) factor calculated by Atkinson joint inversion method is stable and reliable.