郯庐断裂带南段及邻区中小地震地震波衰减特征研究
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摘要
利用安徽省测震台网记录的波形资料,采用单震多台拟合方法计算了郯庐断裂带南段及邻区中小地震地震波的振幅衰减系数K值和卓越频率衰减系数α值,分析研究K值和α值的时空变化特征,并讨论与华东地区中强震之间的对应关系及与QC值的相关性。研究结果对中长期地震预报和震后趋势判断有一定的现实意义。
Based on earthquake data recorded in Anhi seismic network,the K-value of amplitude attenuation coefficient and the α-value of predominant frequency of seismic wave of mid-small earthquakes in southern segment of Tanlu fault zone and its adjacent areas were calculated with the use of single earthquake multiple fitting calculating method.In addition,the space-time variety characteristics of K-value and α-value was researched,and the relationship with moderate earthquakes in East China and the value of QC were discussed.The findings of this paper may have a practical significant on the medium and long term earthquake prediction and post-earthquake trend judgment.
Based on earthquake data recorded in Anhi seismic network,the K-value of amplitude attenuation coefficient and the α-value of predominant frequency of seismic wave of mid-small earthquakes in southern segment of Tanlu fault zone and its adjacent areas were calculated with the use of single earthquake multiple fitting calculating method.In addition,the space-time variety characteristics of K-value and α-value was researched,and the relationship with moderate earthquakes in East China and the value of QC were discussed.The findings of this paper may have a practical significant on the medium and long term earthquake prediction and post-earthquake trend judgment.
引文
[1]蔡静观,许昭永,李茜.禄劝地震前后地震波的振幅衰减特征[J].地震研究:1985,8(增刊):45-5O.
[2]许昭永,蔡静观,李茜.地震前后地震波卓越频率的变化及多点滑移揿合法的应用[J].中国地震,1986,2(3):69-74.
[3]张帆,姚立珣,张震峰.震后趋势判断中尾波振幅衰减特征K值的研究[J].地震地磁观测与研究,2005,26(4):36-44.
[4]秦嘉政,钱晓东.1993年中旬M5.8地震前后区域尾波衰减研究[J].地震研究,2002,25(3):214～219.
[5]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.
[6]李琼,钱晓东,秦嘉政.2005年云南文山地震余震序列尾波QC值研究[J].地震研究,2008,29(3):22～28.
[7]李清河,黄耘,张元生,等.郯庐断裂带中南段速度结构特点[J].国际地震动态,2008,30(11):110-110.
[8]张毅,翟洪涛,顾春雷,等.郯庐断裂带中南段重磁综合剖面探测研究[J].国际地震动态,2011,387(3):10-11.
[9]朱新运,刘杰,张帆.基于Aki模型的近震S波尾波Q值求解及分析软件研制[J].地震研究,2006,29(1):76-80.
[10]Aki.K,Chouet.B.Origin of coda waves:source,attenuation and scattering effects[J].Geophy.Res,1975,80(85):3322～3342.
[11]Herrmann R B,.Q estimates using the coda of local earthquakes[J].Bssa,1980,70:447-468.
[12]Aki K,.Attenuation of shear2waves in the lithosphere for frequencies from 0.05 to 25 Hz[J].Phys Earth PlantInteri 2ors,1980,21,50～60.
[2]许昭永,蔡静观,李茜.地震前后地震波卓越频率的变化及多点滑移揿合法的应用[J].中国地震,1986,2(3):69-74.
[3]张帆,姚立珣,张震峰.震后趋势判断中尾波振幅衰减特征K值的研究[J].地震地磁观测与研究,2005,26(4):36-44.
[4]秦嘉政,钱晓东.1993年中旬M5.8地震前后区域尾波衰减研究[J].地震研究,2002,25(3):214～219.
[5]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.
[6]李琼,钱晓东,秦嘉政.2005年云南文山地震余震序列尾波QC值研究[J].地震研究,2008,29(3):22～28.
[7]李清河,黄耘,张元生,等.郯庐断裂带中南段速度结构特点[J].国际地震动态,2008,30(11):110-110.
[8]张毅,翟洪涛,顾春雷,等.郯庐断裂带中南段重磁综合剖面探测研究[J].国际地震动态,2011,387(3):10-11.
[9]朱新运,刘杰,张帆.基于Aki模型的近震S波尾波Q值求解及分析软件研制[J].地震研究,2006,29(1):76-80.
[10]Aki.K,Chouet.B.Origin of coda waves:source,attenuation and scattering effects[J].Geophy.Res,1975,80(85):3322～3342.
[11]Herrmann R B,.Q estimates using the coda of local earthquakes[J].Bssa,1980,70:447-468.
[12]Aki K,.Attenuation of shear2waves in the lithosphere for frequencies from 0.05 to 25 Hz[J].Phys Earth PlantInteri 2ors,1980,21,50～60.
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