山西代县震群尾波Q值研究
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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。
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.
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.
引文
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[3]Sato H.Energy propagation including scattering effect:Single isotropic scattering,approximation[J].Bull SeisSoc Amer,1977,68:923-948.
[4]Domingguez T,Rebollar C J.Attenuation of coda wavesat the Cerro Prieto Geothermal Field,Baja California,Mexico[J].Bull Seis Soc Amer,1997,87:1368-1374.
[5]Pulli J.Attenuation of coda wave in New England[J].Bull Seis Soc Amer,1984:1149-1166.
[6]李白基,秦嘉政,钱晓东,等.云南姚安地区的尾波衰减[J].地震学报,2004,24(1):47-52.
[7]钱晓东,李白基,秦嘉政.2001年云南施甸MS5.9地震余震序列尾波QC值研究[J].地震地磁观测与研究,2004,25(1):9-17.
[8]啜永清,张淑亮,苏燕,等.大同地震序列的尾波Q值变化特征研究[J].地震,2004,24(2):66-72.
[9]秦嘉政,李白基.用近震尾波估算昆明及其周围地区Q值和地震矩[J].地球物理学报,1986,29:145-156.
[10]王彩勤,刁桂苓,李雪英,等.唐山地区尾波QC值研究[J].华北地震科学,2006,24(1):13-15.
[11]王伟君,刘杰.1999年岫岩地震序列尾波QC的变化过程[J].地震,2004,24(4):38-44.
[12]Aki K.A new view of earthquake and volcanoprecursors[J].Earth Planets Space,2004,56,689-713.
[13]陈顒,黄庭芳.岩石物理学[M].北京:北京大学出版社.2001.
[14]王伟君,刘杰.云南4个地震序列QC-1值变化特征对比研究[J].地震,2006,26(1):19-25.
[2]宋美琴,王秀文,梁向军,等.山西代县震群序列特征及其指示意义[J].山西地震,2007(2):10-12.
[3]Sato H.Energy propagation including scattering effect:Single isotropic scattering,approximation[J].Bull SeisSoc Amer,1977,68:923-948.
[4]Domingguez T,Rebollar C J.Attenuation of coda wavesat the Cerro Prieto Geothermal Field,Baja California,Mexico[J].Bull Seis Soc Amer,1997,87:1368-1374.
[5]Pulli J.Attenuation of coda wave in New England[J].Bull Seis Soc Amer,1984:1149-1166.
[6]李白基,秦嘉政,钱晓东,等.云南姚安地区的尾波衰减[J].地震学报,2004,24(1):47-52.
[7]钱晓东,李白基,秦嘉政.2001年云南施甸MS5.9地震余震序列尾波QC值研究[J].地震地磁观测与研究,2004,25(1):9-17.
[8]啜永清,张淑亮,苏燕,等.大同地震序列的尾波Q值变化特征研究[J].地震,2004,24(2):66-72.
[9]秦嘉政,李白基.用近震尾波估算昆明及其周围地区Q值和地震矩[J].地球物理学报,1986,29:145-156.
[10]王彩勤,刁桂苓,李雪英,等.唐山地区尾波QC值研究[J].华北地震科学,2006,24(1):13-15.
[11]王伟君,刘杰.1999年岫岩地震序列尾波QC的变化过程[J].地震,2004,24(4):38-44.
[12]Aki K.A new view of earthquake and volcanoprecursors[J].Earth Planets Space,2004,56,689-713.
[13]陈顒,黄庭芳.岩石物理学[M].北京:北京大学出版社.2001.
[14]王伟君,刘杰.云南4个地震序列QC-1值变化特征对比研究[J].地震,2006,26(1):19-25.
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