AN ZHENWEN, ZHU CHUANZHEN . 1984: STUDY OF GEOTHERMAL VARIATIONS IN RELATION TO LARGE EARTHQUAKES (1)--THE DISTRIBUTION OF THERMAL STRESSES IN THE NEIGHBORHOOD OF THE SHARP END OF AN ELLIPTICAL-SHAPED CRACK IN AN INFINITE ELASTIC MEDIUM. Acta Seismologica Sinica, 6(2): 211-222.
Citation: AN ZHENWEN, ZHU CHUANZHEN . 1984: STUDY OF GEOTHERMAL VARIATIONS IN RELATION TO LARGE EARTHQUAKES (1)--THE DISTRIBUTION OF THERMAL STRESSES IN THE NEIGHBORHOOD OF THE SHARP END OF AN ELLIPTICAL-SHAPED CRACK IN AN INFINITE ELASTIC MEDIUM. Acta Seismologica Sinica, 6(2): 211-222.

STUDY OF GEOTHERMAL VARIATIONS IN RELATION TO LARGE EARTHQUAKES (1)--THE DISTRIBUTION OF THERMAL STRESSES IN THE NEIGHBORHOOD OF THE SHARP END OF AN ELLIPTICAL-SHAPED CRACK IN AN INFINITE ELASTIC MEDIUM

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  • Published Date: August 31, 2011
  • It is noted that several abnormal phenomena associated with the increase of ground temperature have been observed before large earthquakes. In this paper, the relations between geothermal variations and the preparatory process of large earthquakes are investigated theoretically. It is assumed that there is an elliptical-shaped crack in an infinite elastic medium as a geothermal channel as well as an earthquake fault, the pressure and the temperature distributed in the crack as a linear funtion of x and y are taken into account. From the view point of linear elastic fracture mechanics, the stress field and stress-intensity factor around the crack tip have been obtained in terms of the method suggested by Kassir et al.The result shows that thermal stress might be of the order of kilobar. The relations between the magnitude of thermal stress and the thermal expansion coefficient of the medium are analysed. Finally, the effects of variations of on the seismo-genetic process are discussed briefly.
  • [1] R .Dmoska, Connection between thermal stresses and earthquake processes, Publications of the Institute of Goophysics Polish Academy of Sciences, 86, 1——45,1975.

    [2] L. Stegena,潘诺宁盆地的地热和地震活动,地震地质译丛,3, 6, 55——57,1981.

    [3] 辽宁省气象科学研究所,1975年2月海城地震前的气象异常现象,地球物理学报,20, 4, 270——276, 1977.

    [4] 国家地震局《一九七六年唐山地震》编写组,1976年唐山地震,第十六章,412——414,地震出版社,1982.

    [5] 朱传镇等,唐山地震前后地温变化与地震活动,国际大陆内部地震活动与地震预报学术讨论会论文摘要汇编,1983.

    [6] 郝书俭等,京津唐地区居里等温面及其与地震的矢系,地球物理学报,25, 3, 264——269, 1982.

    [7] 覃玉玺等,云南省温泉区划与地震空间关系的初步探讨,地震研究,5, 2, 199——211, 1982.

    [8] 朱传镇等,震群与大震关系的研究(华北地区),地震学报,3, 2, 105—— 117, 1981.

    [9] N .W. Warren and G. V. Latham, An experimental study of thermally induced mierofracturing and its relation to volcanic seismicity, J. Geopkys. Res., 75, 4455——4464,1970.

    [10] M. K. Kassir and G.'C. Sih, Thzae——dimensional thermoelaetic nroblems of planes of discontinuities or eracks in solids, Developments in Theoretical and Applied Mechartica, Edited by W.A.Shaw,3,117——146, 1967.

    [11] 范天佑编著,断裂力学基础,江苏科学技术出版社,1978.

    [12] C. M. Segedin, Some three——dimensional mixed boundary value problems in alasticitv, Univ. of Wash. Dept. of Aero, and Astro. Dep., 67, 3, 1967.

    [13] M.K.Kassir and G. C. Ssih, Three——dimensional stress distribution around an elliptical erack under arbitrary loadings, J. App. Mech., 33, Trans. ASME, 88,Ser.E.601——611,1966.

    [14] M. k. Kassir, On the distribution of thermal stresses around an elliptical erack in an infinite solid International Journal of Engineering Science, 7,769——784, 1969.

    [15] M. K. Kassir and G. C. Sih, Mechanics of fracture, 2,There——dimensional crack problems, Leyden Noordhoff International Publishing 1975.

    [16] 唐山地震前兆编写组,唐山地震前兆,地震出版社,1977.

    [17] K. Mogi, Fundamental studies on earthquake prediction, Pies. at ISCSEP, Beijing, Sept., 1982.

    [1] R .Dmoska, Connection between thermal stresses and earthquake processes, Publications of the Institute of Goophysics Polish Academy of Sciences, 86, 1——45,1975.

    [2] L. Stegena,潘诺宁盆地的地热和地震活动,地震地质译丛,3, 6, 55——57,1981.

    [3] 辽宁省气象科学研究所,1975年2月海城地震前的气象异常现象,地球物理学报,20, 4, 270——276, 1977.

    [4] 国家地震局《一九七六年唐山地震》编写组,1976年唐山地震,第十六章,412——414,地震出版社,1982.

    [5] 朱传镇等,唐山地震前后地温变化与地震活动,国际大陆内部地震活动与地震预报学术讨论会论文摘要汇编,1983.

    [6] 郝书俭等,京津唐地区居里等温面及其与地震的矢系,地球物理学报,25, 3, 264——269, 1982.

    [7] 覃玉玺等,云南省温泉区划与地震空间关系的初步探讨,地震研究,5, 2, 199——211, 1982.

    [8] 朱传镇等,震群与大震关系的研究(华北地区),地震学报,3, 2, 105—— 117, 1981.

    [9] N .W. Warren and G. V. Latham, An experimental study of thermally induced mierofracturing and its relation to volcanic seismicity, J. Geopkys. Res., 75, 4455——4464,1970.

    [10] M. K. Kassir and G.'C. Sih, Thzae——dimensional thermoelaetic nroblems of planes of discontinuities or eracks in solids, Developments in Theoretical and Applied Mechartica, Edited by W.A.Shaw,3,117——146, 1967.

    [11] 范天佑编著,断裂力学基础,江苏科学技术出版社,1978.

    [12] C. M. Segedin, Some three——dimensional mixed boundary value problems in alasticitv, Univ. of Wash. Dept. of Aero, and Astro. Dep., 67, 3, 1967.

    [13] M.K.Kassir and G. C. Ssih, Three——dimensional stress distribution around an elliptical erack under arbitrary loadings, J. App. Mech., 33, Trans. ASME, 88,Ser.E.601——611,1966.

    [14] M. k. Kassir, On the distribution of thermal stresses around an elliptical erack in an infinite solid International Journal of Engineering Science, 7,769——784, 1969.

    [15] M. K. Kassir and G. C. Sih, Mechanics of fracture, 2,There——dimensional crack problems, Leyden Noordhoff International Publishing 1975.

    [16] 唐山地震前兆编写组,唐山地震前兆,地震出版社,1977.

    [17] K. Mogi, Fundamental studies on earthquake prediction, Pies. at ISCSEP, Beijing, Sept., 1982.

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