2013年吉林前郭5.8级震群地震序列尾波Q值研究
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摘要
挑选出2013年10月31日至12月31日前郭地区发生的58次M1.0以上地震事件,基于Sato的单次散射模型分别计算了长岭台、松原台和乾安台的尾波Q值,获得了3个台尾波Q值与频率的依赖关系,分别为:Qc=33.65f0.9782、Qc=33.00f0.9104、Qc=33.46f1.0299。初步认为研究区内的Q值在2~18Hz范围内与频率有显著的相关性,研究区内的低Q值现象与该区地质构造、地震活动性形成了较好的一致性。
Using 58 M≥1.0earthquakes in Qianguo between Oct.31 to Dec.31,2013,we calculated the Coda Q-value of Changling station,Songyuan station and Qianan station with the Sato single scattering model,We got the dependency relationship of Coda Q and frequency for the three digital observation stations,they are respectively :Qc=33.65f0.9782,Qc=33.00f0.9104,Qc=33.46f1.0299.The result indicate that the Coda Q was a bit low and had a high dependency with frequency during 2-18 Hz,this phenomenon had agood coincide with the tectonic structure and earthquake activities in the study area.
Using 58 M≥1.0earthquakes in Qianguo between Oct.31 to Dec.31,2013,we calculated the Coda Q-value of Changling station,Songyuan station and Qianan station with the Sato single scattering model,We got the dependency relationship of Coda Q and frequency for the three digital observation stations,they are respectively :Qc=33.65f0.9782,Qc=33.00f0.9104,Qc=33.46f1.0299.The result indicate that the Coda Q was a bit low and had a high dependency with frequency during 2-18 Hz,this phenomenon had agood coincide with the tectonic structure and earthquake activities in the study area.
引文
[1]吴戈,房贺岩,李志田,等.1119年前郭地震考察与研究[J].东北地震研究,1988,4(1):67-76.
[2]李传友,汪一鹏,张良怀,等.吉林省松原地区1119年6级地震的发震构造条件[J].中国地震,1999,15(3):237-246.
[3]古成志.松辽平原活动构造遥感信息分析[J].地壳形变与地震,1993,13(2):67-73.
[4]Sato H.Energy propagation including scattering effects:single isotropic scattering approximation[J].J.phys.Earth.,1977,25:27-41.
[5]Aki K.Analysis of seismic coda of local earthquakes as scatter waves[J].J Geophys Res,1969,74:615-631.
[6]Aki K,Chouet B.Origin of coda waves:sorce,attenuation,and scattering effects[J].J Geophys Res,1975,180:3322-3342.
[7]吕坚,朱新运,高建华,等.江西九江-瑞昌震区的尾波衰减特征初探[J].地震,2006,26(4):15-20.
[8]刘希强,石玉燕,曲均浩,等.品质因子的尾波测定方法讨论[J].中国地震,2009,25(1):11-23.
[9]高金哲,刘杰,桑成良,等.长白山天池火山地区的尾波Q值估计[J].华北地震科学,2007,23(4):400-409.
[10]李琼,秦嘉政,钱晓东.2007年宁洱6.4级地震余震序列尾波QC值研究[J].地震研究,2007,30(4):337-343.
[11]梁国经,李仲巍,郑双凤,等.龙岗火山区尾波Q值的初步研究[J].地震地质,2011,33(1):114-122.
[12]贺永忠,师海阔,朱新运,等.利用两种模型对宁夏及邻区尾波Q值进行对比研究[J].大地测量与地球动力学,2012,32(S):10-17.
[2]李传友,汪一鹏,张良怀,等.吉林省松原地区1119年6级地震的发震构造条件[J].中国地震,1999,15(3):237-246.
[3]古成志.松辽平原活动构造遥感信息分析[J].地壳形变与地震,1993,13(2):67-73.
[4]Sato H.Energy propagation including scattering effects:single isotropic scattering approximation[J].J.phys.Earth.,1977,25:27-41.
[5]Aki K.Analysis of seismic coda of local earthquakes as scatter waves[J].J Geophys Res,1969,74:615-631.
[6]Aki K,Chouet B.Origin of coda waves:sorce,attenuation,and scattering effects[J].J Geophys Res,1975,180:3322-3342.
[7]吕坚,朱新运,高建华,等.江西九江-瑞昌震区的尾波衰减特征初探[J].地震,2006,26(4):15-20.
[8]刘希强,石玉燕,曲均浩,等.品质因子的尾波测定方法讨论[J].中国地震,2009,25(1):11-23.
[9]高金哲,刘杰,桑成良,等.长白山天池火山地区的尾波Q值估计[J].华北地震科学,2007,23(4):400-409.
[10]李琼,秦嘉政,钱晓东.2007年宁洱6.4级地震余震序列尾波QC值研究[J].地震研究,2007,30(4):337-343.
[11]梁国经,李仲巍,郑双凤,等.龙岗火山区尾波Q值的初步研究[J].地震地质,2011,33(1):114-122.
[12]贺永忠,师海阔,朱新运,等.利用两种模型对宁夏及邻区尾波Q值进行对比研究[J].大地测量与地球动力学,2012,32(S):10-17.
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