数字化地震波形小震P波、S波震源参数对比研究
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摘要
目前,国内在数字化地震资料研究中,主要应用S波来研究震源参数。本文充分利用上海数字化地震台阵(网)资料,挑选了2001~2004年华东地区发生的9个震级较大的中等地震,反演了单台记录垂直向波(P波)及横波(S波)震源谱,根据布龙模型,计算每个地震单台拐角频率、地震矩、零频谱值、震源破裂半径、应力降等参数,求出每个地震的震源参数(P波和S波)的平均值及其均方差,对这9个地震的P波、S波震源参数计算结果进行了对比。结果表明,用P波段数据进行震源参数的研究是可行的。
Nowadays, people usually study on source parameter with digital S wave waveform data. In the paper we chose 9 moderate earthquakes recorded by Shanghai Digital Seismic Network(Array) in East China from 2001 to 2004. P wave and S wave source spectrum of vertical record of single seismic station were inversed, and parameters of single seismic station such as corner frequency, seismic moment, zero spectrum, rupture radius of seismic source, stress drop and so on were calculated by means of Brune model. Then the average and standard deviation of source parameters of each earthquake were abtained. As the same time, the P wave and S wave source parameters of the 9 moderate earthquakes were contrasted. The result shows that it is feasible to use data of P wave to calculate source parameters.
引文
陈运泰,王妙月等.1976.中、小地震体波的频谱和横波拐角频率比[J].科学通报,414~418
    啜永清,苏燕.2004.山西地区非弹性衰减系数、场地响应和几种震源参数的研究[J].地震学报,26(4):369~378
    刘瑞丰.2003.震级,地震参数—数字地震学在地震预报中的应用[M].见中国地震局监测预报司编,北京:地震出版社,7~13
    刘杰,郑斯华等.2003.利用遗传算法反演弹性衰减系数、震源参数和场地响应[J].地震学报,25(2):211~218
    龙思胜.2003.用Pg波初动求解中小地震的震源参数[J].地震研究,26,89~94
    康英,郑斯华等.2004.中小地震震源参数的求解及其相似关系[J].华南地震,24(2):11~21
    沈小七,刘杰等.2005.安徽地区地震波衰减、场地响应及震源新参数的测定[J].地震地磁观测与研究,26(3):1~10
    郑治真.1979.波谱分析基础[M].北京:地震出版社,294~258
    Bindi D,Daniele Spallarossa,Paolo Augliera,and Marco Cattaneo.2001.Source Parameters Esti matedfromthe Aftershocks ofthe1997Umbria-Marche(Italy)Seismic Sequence[J].BSSA,91(3):448~455
    Jin A,Moya C A and Ando M.2000.Si multaneous determination of site responses and source parameters of small earth-quakes along the Atotsugawa Fault Zone,Central Japan[J].BSSA,90(6):1430~1445
    Jones L Eand Hel mberger D V.1998.Earthquake source parameters andfault kinematicsin the eastern California shear zone[J].BSSA,88(6):1337~1352
    Moya A,Aguirre J and Irikura K.2000.Inversion of source parameters and site effects fromstrong ground-motion recordsusing genetic algorithms[J].BSSA,90(4):977~992

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