ZHANG ZHILIup, TENG YU-CHIUNGup2, WANG CHENGBAOup, TIAN HUAuploans.com sh advancelucashadv. 1990: FRACTURE SYSTEM MODELS OF EARTHQUAKE SEQUENCES OF Ms7.0 IN NORTH CHINA AND SYNTHETIC INVERSION OF FRACTURE PROCESSES. Acta Seismologica Sinica, 12(4): 335-347.
Citation: ZHANG ZHILIup, TENG YU-CHIUNGup2, WANG CHENGBAOup, TIAN HUAuploans.com sh advancelucashadv. 1990: FRACTURE SYSTEM MODELS OF EARTHQUAKE SEQUENCES OF Ms7.0 IN NORTH CHINA AND SYNTHETIC INVERSION OF FRACTURE PROCESSES. Acta Seismologica Sinica, 12(4): 335-347.

FRACTURE SYSTEM MODELS OF EARTHQUAKE SEQUENCES OF Ms7.0 IN NORTH CHINA AND SYNTHETIC INVERSION OF FRACTURE PROCESSES

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  • Published Date: September 01, 2011
  • Four large earthquake sequences of Ms7.0 occurred in North China during 1966-1976. They are the Xingtai earthquake of 1966,Bohai earthquake of 1969,Haicheng earthquake of 1975 and Tangshan earthquake of 1976. The occurrence processes of these earthquakes are studied from the view point of fracture system propagation in this paper. In terms of the analyses of their activity patterns of foreshock-mainshock-aftershock,it is found that the occurrence of each earthquake sequence is the results from the propagation of the associated fracture system in which the length and geometric distribution of fractures may be different. Based on the theory of fracture propagation,four mechanical models of fracture systems suited to each earthquake sequence respectively are presented. The geometric and mechanical parameters of these models are corrected once more by means of the synthetic inversion for the data of focal mechanism solutions,variations of aftershock activity patterns during different periods and geodetic deformation using the fracture finite element method. Then,the best solutions modelling the fracture processes of the four earthquake sequence are selected. It is also found that the pattern of aftershock distribution of a large strike-slip earthquake sequence always show a Z-shape as a whole due to the propagation and combination of fracture branches when an earthquake sequence is at its final stage. It can be a mark to recognize the termination time of an earthquake sequence.
  • [1] 张之立,1989,渤海陆缘地震的力学特征和成因.地球物理学报,32,4,470——477,

    [2] 国家地震局唐山地震编辑组,1982.一九七六年唐山地震,1——458.地震出版社.

    [3] 朱风鸣、吴戈,1982.一九七五年海城地震,1——200.地震出版社.

    [4] 河北省地震局,1986.一九六六年邢台地震,1——307,地震出版社.

    [5] 马宗晋、傅征祥,1982.一九六六一一九七六中国九大地震,1——216,地震出版社.

    [6] 魏光兴、季同仁、李秉锋,1984.海城地震序列及其特征.地震地质,6,1,21——29,

    [7] 顾浩鼎、陈运泰、高祥林、赵毅,1976, 1975年2月4日辽宁省海城地震的震源机制.地球物理学报,19, 4,270——284,

    [8] 陈运泰、黄立人、林邦慧、刘妙龙、王新华,1979.用大地测量资料反演1976年唐山地震的位错模式.地球物理学报,22,3,201——216,

    [9] 李荣安、于军,1985.海城地震双向构造活动的研究.地震学报,7,4,385——396,

    [10] 徐果明、苏锋X1988,地表松软层对断层位错位移场的影响及其反演问睑.地球物理学报,31,3, 281——293,

    [11] 张之立、刘新美,1982.三维断裂扩展方向的理论分析和余震分布图象的预报,地球物理学报,25,增刊,569——581,

    [12] 河北省地震局,1986.邢台地震目录,1——400.地震出版社.

    [13] 河北省地震局,1980.唐山地震目录,1——600,地震出版社.

    [14] 张之立、方兴,1988,研究地震破裂过程的一种新的方法及其应用,地震学报,10, 1——10,

    [15] 张之立、李钦祖、谷继成、杨憋源、刘万琴,1980,唐山地震的破裂过程及其力学分析.地震学报,2, 111——129,

    [16] 张之立,1984,唐山地震破裂过程的三维分析.地震学报,6,22——28,

    [17] 张之立、王成宝、方兴,1989,'唐山地震破裂过程的雁行断裂模式及理论和试验的模拟.地震学报,11,291——302,

    [18] Zienkiewicz, O. C., 1977. The Finite element method, 3rd Edition 1——187. McGraw——Hill,London.

    [19] Barsou m, R. S., 1976. O n the use of isopara m etric finite ele ments in linear fracture mechanics.Int. J. Num. Meth. Engng., 10, 1, 25——37.

    [20] Hibbitt, H. D., 1977. Some properties of singular isoparametric elements. Int. J. Num. Meth.Engng., 11, 1, 180——184.

    [21] 张之立、方兴,1987,断裂构造体系的形成和扩展过程的力学分析及应用.中国科学,B辑,11: 1212——1224.

    [1] 张之立,1989,渤海陆缘地震的力学特征和成因.地球物理学报,32,4,470——477,

    [2] 国家地震局唐山地震编辑组,1982.一九七六年唐山地震,1——458.地震出版社.

    [3] 朱风鸣、吴戈,1982.一九七五年海城地震,1——200.地震出版社.

    [4] 河北省地震局,1986.一九六六年邢台地震,1——307,地震出版社.

    [5] 马宗晋、傅征祥,1982.一九六六一一九七六中国九大地震,1——216,地震出版社.

    [6] 魏光兴、季同仁、李秉锋,1984.海城地震序列及其特征.地震地质,6,1,21——29,

    [7] 顾浩鼎、陈运泰、高祥林、赵毅,1976, 1975年2月4日辽宁省海城地震的震源机制.地球物理学报,19, 4,270——284,

    [8] 陈运泰、黄立人、林邦慧、刘妙龙、王新华,1979.用大地测量资料反演1976年唐山地震的位错模式.地球物理学报,22,3,201——216,

    [9] 李荣安、于军,1985.海城地震双向构造活动的研究.地震学报,7,4,385——396,

    [10] 徐果明、苏锋X1988,地表松软层对断层位错位移场的影响及其反演问睑.地球物理学报,31,3, 281——293,

    [11] 张之立、刘新美,1982.三维断裂扩展方向的理论分析和余震分布图象的预报,地球物理学报,25,增刊,569——581,

    [12] 河北省地震局,1986.邢台地震目录,1——400.地震出版社.

    [13] 河北省地震局,1980.唐山地震目录,1——600,地震出版社.

    [14] 张之立、方兴,1988,研究地震破裂过程的一种新的方法及其应用,地震学报,10, 1——10,

    [15] 张之立、李钦祖、谷继成、杨憋源、刘万琴,1980,唐山地震的破裂过程及其力学分析.地震学报,2, 111——129,

    [16] 张之立,1984,唐山地震破裂过程的三维分析.地震学报,6,22——28,

    [17] 张之立、王成宝、方兴,1989,'唐山地震破裂过程的雁行断裂模式及理论和试验的模拟.地震学报,11,291——302,

    [18] Zienkiewicz, O. C., 1977. The Finite element method, 3rd Edition 1——187. McGraw——Hill,London.

    [19] Barsou m, R. S., 1976. O n the use of isopara m etric finite ele ments in linear fracture mechanics.Int. J. Num. Meth. Engng., 10, 1, 25——37.

    [20] Hibbitt, H. D., 1977. Some properties of singular isoparametric elements. Int. J. Num. Meth.Engng., 11, 1, 180——184.

    [21] 张之立、方兴,1987,断裂构造体系的形成和扩展过程的力学分析及应用.中国科学,B辑,11: 1212——1224.
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