尾波观测与Q值分布htt
OBSERVATION OF CODA AND DISTRIBUTION OF Q
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摘要: 本文依据K.Aki的单次回弹散射模式绘制了DD-1短周期地震仪的尾波包络理论量板,制定了尾波包络的综合观测方法,测定了江苏省地壳内介质的平均品质因子Q。观测表明,尾波包络曲线明显地由两个以上的分支组成。由其中一个分支得到的Q值分布与江苏的地震活动有较好的对应。Abstract: In this paper,a theoretical nomogram for the coda shape function was presented for type DD-1 short-period seismograph based on AM's single backscattering model,the measuring .method of the synthetic coda shape function was devised,and the average quality factor Q in the crust of Jiangsu province was estimated. The observation of coda shows that,the coda shape function is made up of two or more branchs,and the distributiqn of Q estimated by one of these branchs can correspond well with the seis-micity of the Jiangsu area.
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[1] Aki. K., Analysis of the seismic coda cf local earthquake as scattered waves,. J. Geophys. Res., 74, 615——631, 1969.
[2] Aki, K., B. Chouet, Origin of coda waves: Source, attenuation and scattering effects.Geophys. Res., 80, 3322——3342, 1975.
[3] Gao, L. S., L. C. Lee, N, N. Biswas and K. Aki, Comparision of the effects between single and
[4] multiple scattering on coda waves for Local earthquakes, Bull. Seismol. Soc. Am., 73, 377——389,1983.
[5] KonHHeB, 10.,CeHCMHeCKHe KOAa——BOJIHbI. Hayxa 84, 1978.
[6] Hetrmann, R. B., Q estimates using the coda of local earthquakes, Bull. Seismol. Soc., Am., 70,447——468, 1980.
[7] Singh, S. and R. B. Herrmann, Regionalization of crustal coda Q in the Continental United States,J. Geophys. Res., 88, Bl, 527——538, 1933.
[8] 沈梦培等,电子放大地震仪,地震出版社,1981.[1] Aki. K., Analysis of the seismic coda cf local earthquake as scattered waves,. J. Geophys. Res., 74, 615——631, 1969.
[2] Aki, K., B. Chouet, Origin of coda waves: Source, attenuation and scattering effects.Geophys. Res., 80, 3322——3342, 1975.
[3] Gao, L. S., L. C. Lee, N, N. Biswas and K. Aki, Comparision of the effects between single and
[4] multiple scattering on coda waves for Local earthquakes, Bull. Seismol. Soc. Am., 73, 377——389,1983.
[5] KonHHeB, 10.,CeHCMHeCKHe KOAa——BOJIHbI. Hayxa 84, 1978.
[6] Hetrmann, R. B., Q estimates using the coda of local earthquakes, Bull. Seismol. Soc., Am., 70,447——468, 1980.
[7] Singh, S. and R. B. Herrmann, Regionalization of crustal coda Q in the Continental United States,J. Geophys. Res., 88, Bl, 527——538, 1933.
[8] 沈梦培等,电子放大地震仪,地震出版社,1981.
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