【摘要】 2006年4月至5月间山西代县及邻区发生了一系列小震(本文简称代县震群),依据Sato单次散射模型原理和朱新运等开发的Q值软件,对雁门关数字地震台记录的代县震群波形资料等进行了分析,探讨了其尾波衰减特征。结果表明,代县震群的QC值变化较为稳定,总体上拟合的误差较小,表明该地区当时的构造运动并不活跃,原震区短期内发生破坏性地震的可能性较小。更多还原

【Abstract】 A series of small earthquakes occurred in Daixian of Shanxi and its surrounding area during April and May,2006(called Daixian earthquake swarm in this paper),Based on Sato’s single scattering model,the wave data of the earthquake swarm of Daixian,recorded by Yanmenguan Digital Seismic Station,are analyzed by using the Q-value software,developed by ZHU Xinyun etc.,and attenuation characteristics of their Coda waves are studied.The result shows that the changes in Qc-values of the Daixian earthquake swarm are stable,as a whole the error of fitting the is small.It is possibly indicated the tectonic movement in this area at present is inactive,meaning that possibility to have the strong earthquakes in this seismic region is small in the near future.更多还原