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1984: QUASI-STATIC DEFORMATION ACCOMPANIED BY PROPA-GATION OF FAULT CREEP--A THEORETICAL MODEL ANALYSIS AND DISCUSSION ON THE CHARACTERI- STICS OF EARTHQUAKE FAULT MOVEMENT BEFORE THE 1976 TANGSHAN EARTHQUAKE. Acta Seismologica Sinica, 6(1): 29-40.
Citation: 1984: QUASI-STATIC DEFORMATION ACCOMPANIED BY PROPA-GATION OF FAULT CREEP--A THEORETICAL MODEL ANALYSIS AND DISCUSSION ON THE CHARACTERI- STICS OF EARTHQUAKE FAULT MOVEMENT BEFORE THE 1976 TANGSHAN EARTHQUAKE. Acta Seismologica Sinica, 6(1): 29-40.
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QUASI-STATIC DEFORMATION ACCOMPANIED BY PROPA-GATION OF FAULT CREEP--A THEORETICAL MODEL ANALYSIS AND DISCUSSION ON THE CHARACTERI- STICS OF EARTHQUAKE FAULT MOVEMENT BEFORE THE 1976 TANGSHAN EARTHQUAKE

  • Seismo-Geological Brigade, State Seismological Bureau

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  • Published Date: August 31, 2011
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    • Abstract
  • According to the geodetic data and the results from laboratory experimentation, as well as the precursory features of some earthquakes, in this paper a fault creep propagation model is given. The model simulates an extension of the dislocation surface along the fault belt in viscoelastic half-space. For studying the features of deformation nearby the belt, the analytical expressions for quasi-static deformation due to the creep propagation is derived and the author has obtained the theoretical fields of the displacement by the aid of numerical integration. In calculation, the material is taken to be the generalized Kelvin substance and we presume that the slip-time function is △U = B(1-e-t/T) and the creep events propagate unilaterally or bilaterally along the fault.With reference to the results from the model and by analysing the short period geodetic data observed in the stations along Candong fault belt before the 1976 Tangshan earthquake, an inversion of the development of the fault motion is made. It can be demonstrated that the obvious propagation of creep occurred along the belt and the initial creep source appears between the Xiao2han station and the Canzhou station. Then, the creep event propagated from this location to the northeast and south west directions along the belt, and the dislocation at the south west side of the initial creep source is right-lateral strike-slip, the dislocation at the northeast side is the same as above described, but with less compressional dip-slip component.
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    • References (1)
  • [1] J. H. Dieterich, Preseismic fault slip and earthquake prediction, J. Geophys., Res. 83, B8, 1978.

    [2] 陈运泰等,用大地测量资料反演的1976年唐山地震的位错模式,地球物理学报,22, 3, 201——216, 1979.

    [3] 张郭珍,唐山地震前地壳的异常隆起及无震蠕动,地震学报,3, 1, 11——22, 1981.

    [4] 赵国光、黄佩玉,唐山地震前的断层运动与应力积累,参加26届国际地质大会论文集,构造地质和地质力学,地质出版社,1980,

    [5] 赵国光、张超,伴随前兆蠕动和震后滑动的准静态形变,地震学报,3, 3, 217——2300 1981.

    [6] C. Y. King, R. D. Nason and D. Toeher, Kinematics of fault creep, phil. Trans. R. Soc. Lond.,A,274, 1973.

    [7] 中国科学院地质研究所四室模拟组,地震前形变异常的实验研究,地震战线,5, 28——32,1974,

    [8] J. H. Dieterieh et al., Preseismic slip in a :arge scale friction experiment, Proceeding of 19 th U. S.Rock mechanics Symposium, 1978.

    [9] 丹东市地震台,海城地震的地下水异常特征,地震战线,2, 15——17 1976,

    [10] 张超,压扭性断裂的震前应力场与地应力变化异常,地震学报,5, 2, 185——194工983.

    [11] M. A. Chianery, The stress changes that accompany strike——slip faulting. Bzrll. Scism. Soc. Am,53,5,1963.

    [12] J. C. Jaeger and N. G. W. Cook, Fundamentals of rock mechanics 2nd, edition, Chapman and Hall,1976.

    [13] 李兴才,唐山地震前的断层滑动及有关的倾斜和水位变化,地震学报,5, 1, 73——78, 1983,

    [14] 马廷著,黄佩玉,唐山7.8级地震前后的断裂运动,地震地质,4, 4, 45——56, 1982,

    [15] 沧州地震台,对"沧州水准干扰"一文的意见,地震战线,2, 34——35, 1980.

    [16] 刘光勋等,中国东部活动断裂的现代构造运动,地震地质,4, 4, 1——14, 1983.

    [1] J. H. Dieterich, Preseismic fault slip and earthquake prediction, J. Geophys., Res. 83, B8, 1978.

    [2] 陈运泰等,用大地测量资料反演的1976年唐山地震的位错模式,地球物理学报,22, 3, 201——216, 1979.

    [3] 张郭珍,唐山地震前地壳的异常隆起及无震蠕动,地震学报,3, 1, 11——22, 1981.

    [4] 赵国光、黄佩玉,唐山地震前的断层运动与应力积累,参加26届国际地质大会论文集,构造地质和地质力学,地质出版社,1980,

    [5] 赵国光、张超,伴随前兆蠕动和震后滑动的准静态形变,地震学报,3, 3, 217——2300 1981.

    [6] C. Y. King, R. D. Nason and D. Toeher, Kinematics of fault creep, phil. Trans. R. Soc. Lond.,A,274, 1973.

    [7] 中国科学院地质研究所四室模拟组,地震前形变异常的实验研究,地震战线,5, 28——32,1974,

    [8] J. H. Dieterieh et al., Preseismic slip in a :arge scale friction experiment, Proceeding of 19 th U. S.Rock mechanics Symposium, 1978.

    [9] 丹东市地震台,海城地震的地下水异常特征,地震战线,2, 15——17 1976,

    [10] 张超,压扭性断裂的震前应力场与地应力变化异常,地震学报,5, 2, 185——194工983.

    [11] M. A. Chianery, The stress changes that accompany strike——slip faulting. Bzrll. Scism. Soc. Am,53,5,1963.

    [12] J. C. Jaeger and N. G. W. Cook, Fundamentals of rock mechanics 2nd, edition, Chapman and Hall,1976.

    [13] 李兴才,唐山地震前的断层滑动及有关的倾斜和水位变化,地震学报,5, 1, 73——78, 1983,

    [14] 马廷著,黄佩玉,唐山7.8级地震前后的断裂运动,地震地质,4, 4, 45——56, 1982,

    [15] 沧州地震台,对"沧州水准干扰"一文的意见,地震战线,2, 34——35, 1980.

    [16] 刘光勋等,中国东部活动断裂的现代构造运动,地震地质,4, 4, 1——14, 1983.
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