1976年四川省松潘-平武7.2级地震前后主压应力轴的方向特征

成尔林, 李桂芳, 陈和川

成尔林, 李桂芳, 陈和川. 1982: 1976年四川省松潘-平武7.2级地震前后主压应力轴的方向特征. 地震学报, 4(2): 136-148.
引用本文: 成尔林, 李桂芳, 陈和川. 1982: 1976年四川省松潘-平武7.2级地震前后主压应力轴的方向特征. 地震学报, 4(2): 136-148.
CHENG ERLIN, LI GUIFANO, CHEN HECHUANcom sh advance. 1982: ON THE DIRECTION OF THE MAXIMUM COMPRESSIVE PRINCIPAL STRESS BEFORE AND AFTER THE 1976 SONGPAN-PINGWU EARTHQUAKE(M=7.2) OF THE SICHUAN PROVINCE. Acta Seismologica Sinica, 4(2): 136-148.
Citation: CHENG ERLIN, LI GUIFANO, CHEN HECHUANcom sh advance. 1982: ON THE DIRECTION OF THE MAXIMUM COMPRESSIVE PRINCIPAL STRESS BEFORE AND AFTER THE 1976 SONGPAN-PINGWU EARTHQUAKE(M=7.2) OF THE SICHUAN PROVINCE. Acta Seismologica Sinica, 4(2): 136-148.

1976年四川省松潘-平武7.2级地震前后主压应力轴的方向特征

ON THE DIRECTION OF THE MAXIMUM COMPRESSIVE PRINCIPAL STRESS BEFORE AND AFTER THE 1976 SONGPAN-PINGWU EARTHQUAKE(M=7.2) OF THE SICHUAN PROVINCE

  • 摘要: 本文应用1966mdash;1976期间,甘肃南部和四川北部地区地震P波初动方向资料,求出平均节面解,据此推断松潘mdash;平武7.2级地震前,孕震应力场的最大主压应力方向为近东西向。但由松潘台资料所得最大主压应力轴的方向,在震前显示出近90deg;的转动。 由余震资料所得释放应力场的最大主压应力方向,亦为近东西向。

     

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  • [1] K. AKI, Earthquake generating stress iu Japan for the years 1961 to 1963 obtained by smoothing the first motion patterns, Bull. Earthq. Res. Inst., 44, 447——471, 1966.

    [2] 李钦祖等,由单台小地震资料所得两个区域的应力场,地球物理学报,16, 49——61; 1973.

    [3] 许忠淮等,京、津、唐、张地区地震应力场的方向特征,地震学报,I, 2, 121——132, 1979.

    [4] 112. A. Sadovaky et al., The processes preceding strong earthquakes in some region of Middle Asia, Tectouophysics, 14, 3/4, 295——307, 1972.

    [5] I. G. Simbireva, Focal Mechanism of Weak earthquakes in the Naryn River Basin, in: M. A. Sadovaky (Editor), experimental seismology, Science Press, Moscov", 1973, 423 pp. Translated in English from Russiaai by D. B. Vitaliano, U. S. Geological Survey.

    [6] 成尔林,四川及其邻区现代构造应力场和现代构造运动特征,地震学报,3, 3, 231, 1981.

    [7] V. I. Keylis——Borok and L. N. Malinovskaya, One regularity in the occurrence of strong earthquakes, J. G. R., 69, 14, 3019——3024, 1964.

    [8] M. Wysa, Precursors to the Garm earthquake of March 1969, J. G. R., 80, 20, 2926——2930.1975.

    [9] 112. Bath and S. J. Duds, Earthquake Volume, fault plane area, Seismic energy, Strain, Deformation, and related quantities, dnn. Geophys (Rome), 17, 353——368, 1964.

    [10] 傅承义、陈运泰、陈颗,我国的震源物理研究,地球物理学报,22, 4, 315——320, 1979.

    [11] N .Yamakawa, Stress fields in focal regions, J. Phys. Earth, 19, 347——355, 1971.

    [12] B. T. BRADY, Theory of earthquake, II, inclusion theory of crustal earthquake, Pure and Appl, Geophys, 113, 149——168, 1975.

    [13] I. N. Gupta, Precursory reorientation of Stress aLea due to vertical migration of seismic astivity, J. G. R., S0, 2, 272——273, 1975.

    [1] K. AKI, Earthquake generating stress iu Japan for the years 1961 to 1963 obtained by smoothing the first motion patterns, Bull. Earthq. Res. Inst., 44, 447——471, 1966.

    [2] 李钦祖等,由单台小地震资料所得两个区域的应力场,地球物理学报,16, 49——61; 1973.

    [3] 许忠淮等,京、津、唐、张地区地震应力场的方向特征,地震学报,I, 2, 121——132, 1979.

    [4] 112. A. Sadovaky et al., The processes preceding strong earthquakes in some region of Middle Asia, Tectouophysics, 14, 3/4, 295——307, 1972.

    [5] I. G. Simbireva, Focal Mechanism of Weak earthquakes in the Naryn River Basin, in: M. A. Sadovaky (Editor), experimental seismology, Science Press, Moscov", 1973, 423 pp. Translated in English from Russiaai by D. B. Vitaliano, U. S. Geological Survey.

    [6] 成尔林,四川及其邻区现代构造应力场和现代构造运动特征,地震学报,3, 3, 231, 1981.

    [7] V. I. Keylis——Borok and L. N. Malinovskaya, One regularity in the occurrence of strong earthquakes, J. G. R., 69, 14, 3019——3024, 1964.

    [8] M. Wysa, Precursors to the Garm earthquake of March 1969, J. G. R., 80, 20, 2926——2930.1975.

    [9] 112. Bath and S. J. Duds, Earthquake Volume, fault plane area, Seismic energy, Strain, Deformation, and related quantities, dnn. Geophys (Rome), 17, 353——368, 1964.

    [10] 傅承义、陈运泰、陈颗,我国的震源物理研究,地球物理学报,22, 4, 315——320, 1979.

    [11] N .Yamakawa, Stress fields in focal regions, J. Phys. Earth, 19, 347——355, 1971.

    [12] B. T. BRADY, Theory of earthquake, II, inclusion theory of crustal earthquake, Pure and Appl, Geophys, 113, 149——168, 1975.

    [13] I. N. Gupta, Precursory reorientation of Stress aLea due to vertical migration of seismic astivity, J. G. R., S0, 2, 272——273, 1975.
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