摘要
利用四川数字地震台网记录的地震波形资料,采用遗传算法联合反演方法研究了四川盆地地区的介质非弹性衰减模型。结果表明,在500km震源距范围内,研究区非弹性衰减Q值随频率f的关系为Q(f)=217.8f0.816。这一结果为在四川盆地地区进一步开展震源谱和强地面运动的模拟等研究工作奠定了基础。
The inelastic attenuation model of media in the Sichuan Basin region has been studied by using the joint conversion of genetic algorithm based on the waveform data recorded by Sichuan Digital Seismic Network. The results show that the relation between inelastic attenuation value Q and frequencyfQ（f） =217.8 · f^0.816 within 500-km focal distance. This study lays a foundation for the analysis of focal spectrum and the simulation of strong ground motion in the Sichuan Basin region.
出处
《地震研究》
CSCD
北大核心
2007年第1期43-48,共6页
Journal of Seismological Research
基金
国家重点基础研究发展计划课题(2004CB418404)资助
关键词
非弹性衰减
几何衰减
介质品质因子
四川盆地地区
inelastic attenuation, geometrical attenuation, medium quality factor, Sichuan Basin region
