LI SONGLIN, FAN JICHANG, HUI NAILING, YANG JIAN, SUN GUIXIANGaylc. 1990: A STUDY OF THE CODA Q-VALUE AND ITS RELATIONSHIP WITH FREQUENCY OF THE LUANXIAN DISTRICT. Acta Seismologica Sinica, 12(4): 357-366.
Citation: LI SONGLIN, FAN JICHANG, HUI NAILING, YANG JIAN, SUN GUIXIANGaylc. 1990: A STUDY OF THE CODA Q-VALUE AND ITS RELATIONSHIP WITH FREQUENCY OF THE LUANXIAN DISTRICT. Acta Seismologica Sinica, 12(4): 357-366.

A STUDY OF THE CODA Q-VALUE AND ITS RELATIONSHIP WITH FREQUENCY OF THE LUANXIAN DISTRICT

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  • Published Date: September 01, 2011
  • Through processing the data of digital seismic records with high precision collected in the Luanxian Region,the Qc values of the medium corresponding to seven different frequencies (f=1.5,3.0,6.0,10.0,15.0,20.0,25.0 Hz) have been obtained by using the coda wave analysis method. It is found that the Qc value versus frequency can be approximated by the relation Qc=afb. We have obtained a= 46,b=0.85 for shorter lapse time and a= 72,b=0.90 for longer. The large values of b show the strong dependence of Qc on frequency. The value of a (for Qc at 1 Hz) is quite small. These results indicate that Luanxian is a region with strong' tectonic motion.
  • [1] Rautian, T. G., and Khalturin, V. L, 1978. The use of the coda for determination of the earthquake source spectrum. Bull Seism. Soc, Amcr., 68, 923——943.

    [2] Pulli, J. J., 1984. Attenuation of coda waves in New England. Bull. Seism. Soc. Amer., 74, 1149——1166.

    [3] 高龙生、石议斌、华正兴、李瑞玻X1986.唐山——北京地区Q因子随频率的变化.地震学报,8,354——366,

    [4] Aki, K., 1984, Short——period seismology, J. Comput Phys., 54, 3——17.

    [5] Goo, L. S., Biswas, N. N., Lee, L. C. and Aki, K., 1983. Effects of multiple scattering on code waves in three——dimensional medium. Pure rlppl. Geophys., 121, 3——15.

    [6] Aki, K. and Chouet, B., 1975. Origin of coda waves: source, attenuation and scattering effects. J. Gcophys. Res, 80, 3322——3342.

    [7] Sato, H., 1977. Energy propagation including scattrering effects, single isotropic scatterink approximation. J.Phys. Earth., 25, 27——41.

    [8] 范文、原秦喜、惠乃玲、李松林、石林坷、张晓普,1987,滦县地区的近场地震观测.华北地震科学,5,2,40——50.

    [9] Chen, P., O. Nuttli, W. ye, and Qin, J., 1984. Estimates of short period Q values and seismic moments from coda waves for earthquakes, of the Beijing and Yunan regions of China. Bull. Seism. Soc. Amen,74,1189——1207.

    [10] Jin, A. and Aki, K., 1986. Temporal change in coda Q before the Tangshan earthquake of 1976 and the Haicheng earthquake of 1975. J. Geophys. Res., g1, 665——673.

    [11] 傅昌洪、朱传镇,1980.北京及其邻区Q值分布特征的研究.西北地震学报,2, 11——22,

    [12] Frankel, A. and Wennerberg, L., 1987. Energy——flux model of seismic coda: separation of scattering and intrinsic attenuation. Bull. Seism. Soc. Amen, 77, 1223——1251.

    [13] Goo, L. S. and Li, S. L., 1989, Time domain solution for multiple scattering and the coda envelopes,Pure and Appl. Geophys., 132, 123——150.

    [14] Aki, K., 1980. Attenuation of shear waves in the lithosphere for frequencies from 0.05 to 25 Hz. Phys Earth Planet. Int., 21, 50——60.

    [1] Rautian, T. G., and Khalturin, V. L, 1978. The use of the coda for determination of the earthquake source spectrum. Bull Seism. Soc, Amcr., 68, 923——943.

    [2] Pulli, J. J., 1984. Attenuation of coda waves in New England. Bull. Seism. Soc. Amer., 74, 1149——1166.

    [3] 高龙生、石议斌、华正兴、李瑞玻X1986.唐山——北京地区Q因子随频率的变化.地震学报,8,354——366,

    [4] Aki, K., 1984, Short——period seismology, J. Comput Phys., 54, 3——17.

    [5] Goo, L. S., Biswas, N. N., Lee, L. C. and Aki, K., 1983. Effects of multiple scattering on code waves in three——dimensional medium. Pure rlppl. Geophys., 121, 3——15.

    [6] Aki, K. and Chouet, B., 1975. Origin of coda waves: source, attenuation and scattering effects. J. Gcophys. Res, 80, 3322——3342.

    [7] Sato, H., 1977. Energy propagation including scattrering effects, single isotropic scatterink approximation. J.Phys. Earth., 25, 27——41.

    [8] 范文、原秦喜、惠乃玲、李松林、石林坷、张晓普,1987,滦县地区的近场地震观测.华北地震科学,5,2,40——50.

    [9] Chen, P., O. Nuttli, W. ye, and Qin, J., 1984. Estimates of short period Q values and seismic moments from coda waves for earthquakes, of the Beijing and Yunan regions of China. Bull. Seism. Soc. Amen,74,1189——1207.

    [10] Jin, A. and Aki, K., 1986. Temporal change in coda Q before the Tangshan earthquake of 1976 and the Haicheng earthquake of 1975. J. Geophys. Res., g1, 665——673.

    [11] 傅昌洪、朱传镇,1980.北京及其邻区Q值分布特征的研究.西北地震学报,2, 11——22,

    [12] Frankel, A. and Wennerberg, L., 1987. Energy——flux model of seismic coda: separation of scattering and intrinsic attenuation. Bull. Seism. Soc. Amen, 77, 1223——1251.

    [13] Goo, L. S. and Li, S. L., 1989, Time domain solution for multiple scattering and the coda envelopes,Pure and Appl. Geophys., 132, 123——150.

    [14] Aki, K., 1980. Attenuation of shear waves in the lithosphere for frequencies from 0.05 to 25 Hz. Phys Earth Planet. Int., 21, 50——60.
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