| Three dimensional viscoelastic simulation on dynamic evolution of stress field in North China induced by the 1966 Xingtai earthquake |
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| 作者姓名： | 陈连旺 陆远忠 刘杰 郭若眉 |
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| 作者单位： | CHEN Lian-wang1) () LU Yuan-zhong1) () LIU Jie2) () GUO Ruo-mei1) () 1) Institute of Crustal Dynamics，China Seismological Bureau，Beijing 100085，China 2) Center for Analysis and Prediction，China Seismological Bureau，Beijing 100036，China |
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| 基金项目： | State Scientific and Technological Project of the Ninth Five-Year Plan (96-913-09-01-03). |
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| 摘 要： | Introduction Among the mechanisms of earthquake, the essentials may be that the earthquake is a dynamic process of energy accumulation, reaching critical status and failure in focal region. Some nonlin-ear mechanical studies (Bak, Tang, 1989; Ito, Matsuzaki, 1990) show that earthquakes as a self-organized critical phenomenon may be induced by relative small stress disturbance. WANG, et al (1980) already carried out the numerical simulation on earthquake migration in the beginning of 1980s. …
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| 修稿时间： | 2 August 2001 |
Three dimensional viscoelastic simulation on dynamic evolution of stress field in North China induced by the 1966 Xingtai earthquake |
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| CHEN Lian-wang,LU Yuan-zhong,LIU Jie,GUO Ruo-mei.Three dimensional viscoelastic simulation on dynamic evolution of stress field in North China induced by the 1966 Xingtai earthquake[J].Acta Seismologica Sinica(English Edition),2001,14(5):512-523. |
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| Authors: | CHEN Lian-wang LU Yuan-zhong LIU Jie GUO Ruo-mei |
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| Institution: | 1. Institute of Crustal Dynamics, China Seismological Bureau,
2. Center for Analysis and Prediction, China Seismological Bureau, |
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| Abstract: | Using three dimensional (3D) viscoelastic finite element method (FEM) we study the dynamic evolution pattern of the coseismic change of Coulomb failure stress and postseismic change, on time scale of hundreds years, of rheological effect induced by the MS=7.2 Xingtai earthquake on March 22, 1966. Then, we simulate the coseismic disturbance in stress field in North China and dynamic change rate on one-year scale caused by the Xingtai earth-quake and Tangshan earthquake during 15 years from 1966 to 1980. Finally, we discuss the triggering of a strong earthquake to another future strong earthquake. |
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| Keywords: | Xingtai earthquake Coulomb failure stress dynamic stress evolution 3D viscoelastic model + |
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