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ZHANG YAOGUO, YANG GUIZHEN. 1983: DETERMINATION OF Q-VALUE BY THE CODA WAVE FOR A PORTION OF THE SICHUAN PROVINCE. Acta Seismologica Sinica, 5(3): 304-312.
Citation: ZHANG YAOGUO, YANG GUIZHEN. 1983: DETERMINATION OF Q-VALUE BY THE CODA WAVE FOR A PORTION OF THE SICHUAN PROVINCE. Acta Seismologica Sinica, 5(3): 304-312.
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DETERMINATION OF Q-VALUE BY THE CODA WAVE FOR A PORTION OF THE SICHUAN PROVINCE

  • Sichuan Provincial Seismological Bureau

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  • Published Date: August 31, 2011
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    • Abstract
  • By using the theory of coda waves developed by K. Aki for an earthquake recorded at a number of stations and the equations based on the assumption that each earthquake has a definite seismic moment, the Q-value of the crustal medium at shallow depth of a portion of the province of Sichuan has been determined, taking the results published by Chen Yuntai et al.[8] as a basis.The results thus obtained reveal a definite character of variation with direction of the attenuation of coda waves. Besides, earthquakes occurred from 1971 to 1975 give three sub-regions of the province, each of different Q-value. It is also noted that in the region, of low Q-value occurred an earthquake of magnitude 7.1.
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    • References (1)
  • [1] K. Aki, Analysis of the seismic coda of local earthquake as scattered waves, J. G. R., 615——631, 1969.

    [2] K. Aki and B. Chouet, Origin of coda waves: Source, attenuation, and scattering effects, J. G. R, 80, 3332——3342, 1975.

    [3] M. Tsujiura, Spectral analysis of the cads waves from local earthquakes, Bulletin. of Ear——thquake Research Institute, 53, 1——48, 1978.

    [4] T. G. Rautian and V. I. Khalturin, The use of the coda for determinatiou of the earthquake source spectrum, B. S. S. A., 68, 923——943, 1978.

    [5] B. Chouet, g. Aki and M. Tsujiura, Regional variation of the svaliug law of earthquake eource spectra, B. S. S. d., 68, 49——79, 1978.

    [6] A.M.Suteau acrd J.H.Whitcomb, A local earthquake coda maginitude and its relation to duration, moment Mo and local Richter magnitude ML B. S. S. A., 69, 353——368,1979.

    [7] R. B. Herrmann, Q estimates using the coda of local earthquakes, B. S. S. d., 70, 447——468,1980.

    [8] 陈运泰等,巧家、石棉的小震震源参数的测定及其地震危险性的估计,地球物1}学报,19, 3, 1976,

    [9] 冯康,数值计算方法,国防工业出版社,1978.

    [10] M.巴特,地球物理学中的谱分析,郑治真译,地震出版社,1978.

    [11] 徐果明、周蕙兰,地震学原理,科学出版社,1982.

    [12] C. B. Arehambeau et al., Fine structure of the upper mantle, J. G. R., 74, 25, 5825——5863, 1969.

    [1] K. Aki, Analysis of the seismic coda of local earthquake as scattered waves, J. G. R., 615——631, 1969.

    [2] K. Aki and B. Chouet, Origin of coda waves: Source, attenuation, and scattering effects, J. G. R, 80, 3332——3342, 1975.

    [3] M. Tsujiura, Spectral analysis of the cads waves from local earthquakes, Bulletin. of Ear——thquake Research Institute, 53, 1——48, 1978.

    [4] T. G. Rautian and V. I. Khalturin, The use of the coda for determinatiou of the earthquake source spectrum, B. S. S. A., 68, 923——943, 1978.

    [5] B. Chouet, g. Aki and M. Tsujiura, Regional variation of the svaliug law of earthquake eource spectra, B. S. S. d., 68, 49——79, 1978.

    [6] A.M.Suteau acrd J.H.Whitcomb, A local earthquake coda maginitude and its relation to duration, moment Mo and local Richter magnitude ML B. S. S. A., 69, 353——368,1979.

    [7] R. B. Herrmann, Q estimates using the coda of local earthquakes, B. S. S. d., 70, 447——468,1980.

    [8] 陈运泰等,巧家、石棉的小震震源参数的测定及其地震危险性的估计,地球物1}学报,19, 3, 1976,

    [9] 冯康,数值计算方法,国防工业出版社,1978.

    [10] M.巴特,地球物理学中的谱分析,郑治真译,地震出版社,1978.

    [11] 徐果明、周蕙兰,地震学原理,科学出版社,1982.

    [12] C. B. Arehambeau et al., Fine structure of the upper mantle, J. G. R., 74, 25, 5825——5863, 1969.
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