GAO XI-MING, YIN ZHI-SHAN, WANO WEI-ZHONG, HUANG LI-JUAN, LI JIAN. 1981: TRIGGERING OF EARTHQUAKES BY THE TIDAL STRESS TENSOR. Acta Seismologica Sinica, 3(3): 264-275.
Citation: GAO XI-MING, YIN ZHI-SHAN, WANO WEI-ZHONG, HUANG LI-JUAN, LI JIAN. 1981: TRIGGERING OF EARTHQUAKES BY THE TIDAL STRESS TENSOR. Acta Seismologica Sinica, 3(3): 264-275.

TRIGGERING OF EARTHQUAKES BY THE TIDAL STRESS TENSOR

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  • Published Date: August 31, 2011
  • By superimposing the -and -type general solutions of the equilibrium equation without body force and particular solution of the equilibrium with tidal body force, the tidal stress tensor under free boundary conditions is obtained, and the change of the prineipal stresses and principal stress axes with depth is discussed. In the depth range 0-100km, the deviation of the direction of the principal stress axes in space, may reach a value as high as 10(when =30).The phase distributions of tidal hydrostatic stress, the maximum tidal shear stress and the tidal shear stress along the dislocation vectors of the faults as related to the origin times of the earthquakes have been studied for 70 earthquakes (Ms5.0) occurred in our country since 1957, having correct fault plane solutions.There is no apparent correlation between the phase of tidal, hydrostatic stress and the origin time of the earthquake (pr=0.58), but the maximum tidal shear stress has a certain effect on the triggering of the earthquakes (pr=8.110-2). Tidal shear stress along the dislocation vectors of faults plays an even more prominant part (pr=5.210-2). The phase of the maximum shear stress correlates well with the earthquakes of the oblique-slip type (pr=8.710-4).
  • [1] L. .Knopoff, Fartli tides as a triggering mechanism Por eartLqnahes, Bull. Selsm, Soc. Am., 54, 1865——1870. 1964.

    [2] A. Ryall, J. D. Van Wormcr, & A. L. Jones, Triggering of microcarthqnakes by earth tides, and other features of the Truckee, California, earthquake serlneuces of September, 1966. Bull. Seism. Soc. Am., 58, 215——298, 1968.

    [3] J. F. Simpsou, Earth tides as a triggering mechanism for earthquakes, Earth and Planetary Sci. Letters, 2. 5, 473——478, 1957.

    [4] T. H. Heaton, Tidal triggering of earthquakes, Geophy. J. R, astr. Soc., 43, 307——323, 1975.

    [5] S. Shlien, Earthquake——tide correlation. Geophy. J. R, astr. Soc., 28, 27——34, 1972.

    [6] E. W. Kleim, Earthquake swarms and the scmidiurual solid earth tide, Geophys. J. R. astr, Soc., 45, 245——295. 1976.

    [7] D. E. Willis, & R. W, Taylor, Investigation of multiple seismie events and first zone diseriminants, ARPA Semi——Annual Teclinical Eeport, April 1974. Caltech

    [8] 钱伟长、叶开源, 弹性力学, 科学出版社, 1956.

    [9] P. hlelvhior, The tides of t.hc Planet Earth, 7918

    [10] 中国科学院沈阳计算所等, 电子计算机常用算法。科学出版社, 1976

    [11] M. N, Toksöz. Moonquake: Mechanisms and relation to tidal stresses, Seince, 196, 4293, 979——981, 1977

    [12] 中国科学院地球物理所第三研究室实验组, 单轴压力下岩石破裂的初步研究, 地球物理学报, 19, 4, 306——316, 1976.

    [1] L. .Knopoff, Fartli tides as a triggering mechanism Por eartLqnahes, Bull. Selsm, Soc. Am., 54, 1865——1870. 1964.

    [2] A. Ryall, J. D. Van Wormcr, & A. L. Jones, Triggering of microcarthqnakes by earth tides, and other features of the Truckee, California, earthquake serlneuces of September, 1966. Bull. Seism. Soc. Am., 58, 215——298, 1968.

    [3] J. F. Simpsou, Earth tides as a triggering mechanism for earthquakes, Earth and Planetary Sci. Letters, 2. 5, 473——478, 1957.

    [4] T. H. Heaton, Tidal triggering of earthquakes, Geophy. J. R, astr. Soc., 43, 307——323, 1975.

    [5] S. Shlien, Earthquake——tide correlation. Geophy. J. R, astr. Soc., 28, 27——34, 1972.

    [6] E. W. Kleim, Earthquake swarms and the scmidiurual solid earth tide, Geophys. J. R. astr, Soc., 45, 245——295. 1976.

    [7] D. E. Willis, & R. W, Taylor, Investigation of multiple seismie events and first zone diseriminants, ARPA Semi——Annual Teclinical Eeport, April 1974. Caltech

    [8] 钱伟长、叶开源, 弹性力学, 科学出版社, 1956.

    [9] P. hlelvhior, The tides of t.hc Planet Earth, 7918

    [10] 中国科学院沈阳计算所等, 电子计算机常用算法。科学出版社, 1976

    [11] M. N, Toksöz. Moonquake: Mechanisms and relation to tidal stresses, Seince, 196, 4293, 979——981, 1977

    [12] 中国科学院地球物理所第三研究室实验组, 单轴压力下岩石破裂的初步研究, 地球物理学报, 19, 4, 306——316, 1976.
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