【摘要】 根据单次散射(Aki)模型,利用2003年至今山东台网记录的26次2.9级以上地震的数字化地震波,研究并探讨了胶东半岛及两侧海域平均尾波Q值,在1~18Hz的频率域范围内,Q值与频率的依赖关系为:胶东北部海域QC=(313±42)f(0.653±0.145),胶东内陆QC=(319±88)f(0.649±0.145),黄海海域QC=(259±60)f(0.757±0.277),与国内其他区域尾波Q值研究结果相比,本区域QC为高值、对频率低依赖性区域。可能与本研究区内构造活动弱、地震活动水平低有关。更多还原

【Abstract】 Based on the single scatter model (Aki), using 26 earthquake digital wave data above ML≥2.9 from 2003 to now recorded by Shandong earthquake net, the average Q value of coda in relative region is calculated and relationship between Q value and frequency is discussed. The results are:QC=(313±42)f(0.653±0.145) in sea areas upstate Jiaodong Peninsula;QC=(319±88)f(0.649±0.145) in Jiaodong inland;QC=(259±60)f(0.757±0.277) in Huanghai areas. Contrasting the result with that of other domestic region, the coda scatter feature is that the Q value is higher but dependence on frequency is lower, so it is considered that tectonic activity and seismic activity are low in this region.更多还原