基于Aki模型的张北地震序列Qc值特征研究  

Based on Aki model Zhangbei seismic sequence Qc value characteristic research

作　　者：王曰风[1] 张秀萍[1] 韩和平[2] 宋晓煜[1] 

机构地区：[1]河北省地震局张家口地震中心台,河北张家口075000 [2]河北省地震局阳原地震台,河北阳原054300

出　　处：《防灾科技学院学报》2010年第2期37-40,共4页Journal of Institute of Disaster Prevention

摘　　要：采用Aki尾波单次散射模型计算了张家口台的近场数字地震记录资料,分析了张北地震序列尾波Qc值随频率的衰减关系;当流逝时间为35 s时,张北地区的平均Qc值为Qc(f)=(76.8±17.6)f 0.9606±0.22,Qc值较低,在76.8±17.6范围内波动,这表明该区域目前处于低Qc值的构造活跃期,同时,主震发生后靠近震中区的这个椭球形的散射体内能量大释放已基本完成,目前该震源体正处于应力的调整过程。Used the Aki trailing wave single scattering model to calculate the Zhangjiakou Taiwan＇s near field digital seismic recording material,analyzed and has studied the Zhangbei seismic sequence trailing wave Qc value along with the frequency weaken relations;When the passing time is 35s,the Zhangbei area＇s average Qc value is Qc（f） =（76.8±17.6） f 0.9606±0.22,Qc value is low,fluctuates in 76.8±17.6 the scope,this indicated that this region is in the low Qc value at present the structure active phase,simultaneously,after the principal earthquake occurs,approaches the epicentral area this ellipsoidal structure scatterer proper energy big release to complete basically,at present this center of origin body is processing the stress the alignment procedure

关 键 词：地震序列 Aki单次散射模型 尾波QC值 

分 类 号：P315.61[天文地球—地震学]