Fold catastrophe model of strike-slip fault earthquake

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Fold catastrophe model of strike-slip fault earthquake

Using a differential form of the potential energy function and taking the effect of work applied by external force in far field into account, the mechanism of strike-slip fault earthquake is analyzed. The research indicates that each characteristic displayed with a fold catastrophe model in the catastrophe theory corresponds to a specific primary characteristic of the strike-slip fault earthquake. The fold catastrophe can describe the positions of starting and end points of a fault failure and the distance of fault dislocation. These include the description of stability of the surrounding rock-fault system before and after the earthquake. Two different illustrations about elastic energy releasing amount of the surrounding rock with the fault failure are shown with the primary characteristics mutually demonstrated. The intensity of strike-slip fault earthquake is related to the surrounding rock press and the stiffness ratio of surrounding rock and fault. The larger the Surrounding rock press, the smaller the stiffness ratio. The larger the included angle between the tangential stress axis and the causative fault surface, the stronger the earth-quake.水利论文u V)P9F0y5?"r O

作 者: Yue PAN Ai-wu LI  
作者单位:Yue PAN(School of Civil Engineering, Qingdao Technological University, Qingdao 266520,Shandong Province, P. R. China)水利论文T^PT ] V+L+W
Ai-wu LI(School of Science, Qingdao Technological University, Qingdao 266520,Shandong Province, P. R. China) 
刊 名:应用数学和力学(英文版)  EI SCI
英文刊名:APPLIED MATHEMATICS AND MECHANICS 
年,卷(期):2010 31(3) 
分类号:P315.3 
关键词:fault earthquake   fold catastrophe model   end point of failure   failure cri-terion   energy import rate   elastic energy releasing amount  
机标关键词:faultSurrounding rockstiffness ratiopotential energy functioncatastrophe theoryexternal forceelastic energypressfar fielddifferentresearchrelatedform ofaccountstresspointsmodelworkaxisTwo 
基金项目:国家自然科学基金 
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