利用红山单台研究邢台震区尾波(Q_C)衰减特征
|
摘要
利用红山数字地震台记录到的,自2001年3月到2006年7月近震波形资料,采用Aki的尾波单次散射模型计算了该台站周围50km内的尾波QC值;该范围代表了邢台震区的地下介质的特征,经多地震拟合后得出尾波与频率的衰减关系。并给出震区的尾波QC值随时间的变化结果,发现在邢台2002年4月22日的ML5.0级地震前后尾波QC值由低升高然后再降低。
This essay,based on the near earthquake waveform data from March 2001 to July 2006,calculates with the coda Aki single scattering model the coda QC value 50km around Hongshan Seismic station.This area represents the scope of Xingtai seismic region which shares the same underground media features.Thus we obtain the variation relationship between QC value and the frequency.We find before and after the April 22,2002 Ms5.0 Xingtai earthquake,the QC coda value changed from low to high and then high to low.
This essay,based on the near earthquake waveform data from March 2001 to July 2006,calculates with the coda Aki single scattering model the coda QC value 50km around Hongshan Seismic station.This area represents the scope of Xingtai seismic region which shares the same underground media features.Thus we obtain the variation relationship between QC value and the frequency.We find before and after the April 22,2002 Ms5.0 Xingtai earthquake,the QC coda value changed from low to high and then high to low.
引文
[1]Aki K.Analysis of the seismic coda of local earthquakes as scatter waves[J].J Geophys Res,1969,74:615–631
[2]Chouet B,Aki K,Tsujiura M.Regional variation of the scaling law of earthquake source spectra[J].Bull Seism Soc Amer,1978,68:49–79
[3]Peng J Y,Aki K,Chouet B,et al.Temporal change in coda Q associated with the Round Valley,California,earthquake of November 23,1984[J].J Geophys Res,1987,92(B5):3 507–3 526
[4]Sato H.Temporal changes in scattering and attenuation associated with the earthquake occurrence-a reviewof recent studies on coda waves[J].Pure App Geophys,1988,126:465–497
[5]Beroza G C,Cole A T,Ellsworth W L.Stability of coda wave attenuation during the Loma Prieta,California earthquake sequence[J].J Geophys Res,1995,100(B3):3 977–3 987
[6]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):37–44
[7]马宏生,刘杰,张国民,等.尾波QC值随时间变化在地震预测中应用的研究[J].地震,2005,25(4):39–48
[8]张天中.滇西试验场区的Q值及其随时间窗的变化[J].地震学报,1990,12(1):12–21
[9]陈学庭.澜沧和耿马大地震Q值随时间的变化[M].中国地球物理学会年刊.1992,北京:地震出版社,53
[10]秦嘉政,李白基,钱晓东,等.云南武定地震余震近场尾波衰减的区域特征[J].地震学报,2001,23(1):87–97
[11]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
[12]Aki K,Chouet B.Origin of coda waves:source,attenuation and scattering effects[J].J Geophys Res,1975,80:3 322–3 342
[13]朱新运,刘杰,张帆,等.基于Aki模型的近震S波尾波Q值求解及分析软件研制.地震研究,2006,29(1):76–80
[14]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
[15]Pulli J.Attenuation of coda wave in New England.BSSA,1984:1 149–1 166
[16]束沛镒,张学民,刁桂苓,等.利用纯S波输入研究地震台站下方的横波速度结构[J].地球物理学报,2001,45(1):67–75
[17]张学民,刁桂苓,夏乱保.河北省强震区内外深部S波速度结构特征研究[J].华北地震学.2001,19(3):1–14
[18]王彩勤,郑斯华,刁桂苓,等.张北地震序列的尾波Q值研究[J].防震减灾工程学报,2004,24(1):37–40
[19]赵国泽,刘国栋,詹艳,等.张北—尚义地震及其邻区地壳上地幔的结构[J].地震地质,1998,20(2):155–161
[2]Chouet B,Aki K,Tsujiura M.Regional variation of the scaling law of earthquake source spectra[J].Bull Seism Soc Amer,1978,68:49–79
[3]Peng J Y,Aki K,Chouet B,et al.Temporal change in coda Q associated with the Round Valley,California,earthquake of November 23,1984[J].J Geophys Res,1987,92(B5):3 507–3 526
[4]Sato H.Temporal changes in scattering and attenuation associated with the earthquake occurrence-a reviewof recent studies on coda waves[J].Pure App Geophys,1988,126:465–497
[5]Beroza G C,Cole A T,Ellsworth W L.Stability of coda wave attenuation during the Loma Prieta,California earthquake sequence[J].J Geophys Res,1995,100(B3):3 977–3 987
[6]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):37–44
[7]马宏生,刘杰,张国民,等.尾波QC值随时间变化在地震预测中应用的研究[J].地震,2005,25(4):39–48
[8]张天中.滇西试验场区的Q值及其随时间窗的变化[J].地震学报,1990,12(1):12–21
[9]陈学庭.澜沧和耿马大地震Q值随时间的变化[M].中国地球物理学会年刊.1992,北京:地震出版社,53
[10]秦嘉政,李白基,钱晓东,等.云南武定地震余震近场尾波衰减的区域特征[J].地震学报,2001,23(1):87–97
[11]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
[12]Aki K,Chouet B.Origin of coda waves:source,attenuation and scattering effects[J].J Geophys Res,1975,80:3 322–3 342
[13]朱新运,刘杰,张帆,等.基于Aki模型的近震S波尾波Q值求解及分析软件研制.地震研究,2006,29(1):76–80
[14]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
[15]Pulli J.Attenuation of coda wave in New England.BSSA,1984:1 149–1 166
[16]束沛镒,张学民,刁桂苓,等.利用纯S波输入研究地震台站下方的横波速度结构[J].地球物理学报,2001,45(1):67–75
[17]张学民,刁桂苓,夏乱保.河北省强震区内外深部S波速度结构特征研究[J].华北地震学.2001,19(3):1–14
[18]王彩勤,郑斯华,刁桂苓,等.张北地震序列的尾波Q值研究[J].防震减灾工程学报,2004,24(1):37–40
[19]赵国泽,刘国栋,詹艳,等.张北—尚义地震及其邻区地壳上地幔的结构[J].地震地质,1998,20(2):155–161
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心