【摘要】 采用Atkinson方法,基于遗传算法反演山东地区非弹性衰减Q值,在此基础上利用Moya等方法进行了台站的场地响应的测算。数据分析使用的是山东数字地震台网最早正式运行的8个数字台站记录的所有地震,采用信噪比方法挑选出质量较高的16次地震,对记录谱进行路径校正后参与计算得到每个台站的场地响应值。研究结果表明:在所研究的频率范围内非弹性衰减Q值和频率f有很好的线性关系,Q(f)=297.4f0.558;8个数字地震台中的7个基岩台均没显示出明显的放大作用,1个井下摆台站场地响应在高频部分衰减很快。更多还原

【Abstract】 Based on the genetic algorithm and Atkinson method, the inelastic attenuation Q values in Shandong area are calculated in this paper by using the data of sixteen events recorded by 8 stations of Shandong digital seismic net. The site responses are inverted using Moya method. The results show that the inelastic attenuation Q values and the frequencies have good linear relations as Q(f)=297.4f0.558; there is no visible amplification within the whole frequency band for 7 stations at rock site, whereas for 1 well seismic station the site response attenuates quickly at high frequencies.更多还原