DING ZHONGYI, JIA JINKANG, WANG RENcom sh advance. 1983: SEISMIC TRIGGERING EFFECT OF TIDAL STRESS. Acta Seismologica Sinica, 5(2): 172-184.
Citation: DING ZHONGYI, JIA JINKANG, WANG RENcom sh advance. 1983: SEISMIC TRIGGERING EFFECT OF TIDAL STRESS. Acta Seismologica Sinica, 5(2): 172-184.

SEISMIC TRIGGERING EFFECT OF TIDAL STRESS

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  • Published Date: August 31, 2011
  • The tidal stress field of a layered spherically symmetric Earth due to the Sun and Moon is used to investigate its relation with earthquake occurrence. For the 70 strong earthquakes occurred during the last 24 years in or near China, we computed the tidal stress in spherical polar co-ordinate at the focus at the time of occurrence. The normal and tangential stress components along the slip direction on the earthquake fault plane are then found by co-ordinate transformation. Coulomb's criterion of shear fracture is used to determine whether these stress components will trigger the earthquakes or not.The results show that among the 70 earthquakes, 43 have had triggering effect and for the 18 events occured in North China 14 of them have had triggering effect. It may be concluded that for shallow strike slip earthquakes there are significant triggering effect, while for oblique slip and dip slip earthquakes tidal stress has very little triggering effect. From 72 events occurred over other parts of the world similar conclusion is obtained.Finally, for the purpose, of earthquake prediction, a way in finding a time interval during which the tidal stress may trigger earthquake on possible faults in North China is suggested.
  • [1] L. Knopoff, Earth tides as a triggering mechanism for earthquakes, Bull. Seism. Soc. Am., 54, 1865——1870, 1964.

    [2] C. H. Dix, Triggering of some earthquakes, Proc. Japan .4cad., XL, 6, 410——415, 1964.

    [3] A. Ryall, J. D. Van Wonner, and A. E. Jones, Triggering. of microearthquakes by Earth tides, and other features of the Truckee, California, earthquake sequence of September, 1966, Bull. Seism. Soc. Am., 58, 215——248, 1968.

    [4] J. F. Simpson, Earth tides as a triggering mechanism for earthquakes, Earth and Planetary Science Leuers, 2, 473——478, 1967.

    [5] T. H. Heaton, Tidal triggering of earthquakes, <:eophys.].R, astr. Sot., 43, 307——326, 1975.

    [6] 杜品仁,潮汐与地震关系初探,地震科学研究,1, 14——20, 1981.

    [7] 高锡铭,殷志山,王威中,黄利娟,李健,固体潮应力张量对地震的触发作用,地壳形变与地震,创刊号,4——16,1981.

    [8] H. Takeuchi, On the Earth tide in the compressible earth of varying density and elasticity, J. Fae. Sci., University of Tokyo, Sect. II 7, part 11, 1——153, 1951

    [9] 王仁,丁中一,轴对称情况下地球自转速率变化及引潮力引起的全球应力场,天文地球动力学文集,上海天文台1979年编辑出版,8——21, 1978.

    [10] 王仁、丁中一、殷有泉,固体力学基础,地质出版社,第71200页,1979.

    [11] J. C. Jaeger .and N. G. W., Cook, Fundamentals of Rock Mechanics, 3rd. ed., p. 379, 1977.

    [1] L. Knopoff, Earth tides as a triggering mechanism for earthquakes, Bull. Seism. Soc. Am., 54, 1865——1870, 1964.

    [2] C. H. Dix, Triggering of some earthquakes, Proc. Japan .4cad., XL, 6, 410——415, 1964.

    [3] A. Ryall, J. D. Van Wonner, and A. E. Jones, Triggering. of microearthquakes by Earth tides, and other features of the Truckee, California, earthquake sequence of September, 1966, Bull. Seism. Soc. Am., 58, 215——248, 1968.

    [4] J. F. Simpson, Earth tides as a triggering mechanism for earthquakes, Earth and Planetary Science Leuers, 2, 473——478, 1967.

    [5] T. H. Heaton, Tidal triggering of earthquakes, <:eophys.].R, astr. Sot., 43, 307——326, 1975.

    [6] 杜品仁,潮汐与地震关系初探,地震科学研究,1, 14——20, 1981.

    [7] 高锡铭,殷志山,王威中,黄利娟,李健,固体潮应力张量对地震的触发作用,地壳形变与地震,创刊号,4——16,1981.

    [8] H. Takeuchi, On the Earth tide in the compressible earth of varying density and elasticity, J. Fae. Sci., University of Tokyo, Sect. II 7, part 11, 1——153, 1951

    [9] 王仁,丁中一,轴对称情况下地球自转速率变化及引潮力引起的全球应力场,天文地球动力学文集,上海天文台1979年编辑出版,8——21, 1978.

    [10] 王仁、丁中一、殷有泉,固体力学基础,地质出版社,第71200页,1979.

    [11] J. C. Jaeger .and N. G. W., Cook, Fundamentals of Rock Mechanics, 3rd. ed., p. 379, 1977.
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