利用Sato单次散射模型，对黑龙江省大庆地区2002—2012年11个数字化测震台网记录的地震波形资料进行计算和分析。拟合尾波窗长60 s时尾波Qc值对频率的依赖关系，得到黑龙江大庆地区Qc值随频率的变化关系式为Qc=(24.57±6.05)f 0.9937±0.0713。庆新台Q0值最高，朝阳沟台Q0值最低。研究区内地震台站表现为低Q0值，高η值，符合Q0值与频率的依赖关系，表明该地区地下介质非均匀程度高，构造活动强烈。%Using Sato single scatter model,seismic waveform data recorded by 10 digital stations in north of Daqing digital seismological network from 2002 to 2012 are calculated and analyzed. Correlation ofQ value of coda wave to frequency is fi tted for the coda wave window of 60 s and variation ofQ value with frequency in Daqing is fi gured out.The highest value,which is up to 33.79,is at Qingxin Seismic Station,and the lowest is15.0,is at Chaoyanggou Seismic Station. That most stations in studied region show lowQ0 value and highηvalue,which coincide with correlation ofQ value and frequency,illustrates that non-uniform degree of underground medium is high and that tectonic activity is intensive in the region.
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