以Burgers体模型模拟震后粘弹性松弛效应  

SIMULATING POSTSEISMIC VISCOELASTIC DEFORMATION BASED ON BURGERS MODEL

作　　者：邵志刚[1] 傅容珊[1] 薛霆虓[1] 黄建华[1] 

机构地区：[1]中国科学院壳幔物质与环境重点实验室

出　　处：《大地测量与地球动力学》2007年第5期31-37,共7页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(40274033);安徽省地震局地震科研重点基金

摘　　要：运用有限元数值方法、以Burgers体为粘弹介质模型模拟了震后地表形变。计算结果表明:以Burgers体为粘弹介质模型可以解释地震引起的瞬时弹性响应、呈指数衰减的短期响应与线性增加的稳态长期响应。分析认为,以Burgers体为粘弹介质模型可以解决Maxwell体和Kelvin体在模拟震后短期和长期形变时的不协调问题。Using finite element method, and taking Burgers model for viscoelastic media the postseismic deformation is simulated. It is found that the simulated postsiesmic results with Burgers model can be used for explaining the transient elastic response, short time response and long time response. There is no uncoordinated phenomenon caused by the Maxwell and Kelvin model, as to short time＇and long time postseismic deformation, when we take the Burgers model as viscoelastic medium.

关 键 词：震后形变 Burgers体 粘弹性松弛 有限元模拟 模拟 

分 类 号：P313.1[天文地球—固体地球物理学]