Parallel Numerical Analysis on the Rheology of the Martian Ice-Rock Mixture

作     者：景惠敏 张怀 李菡 David A Yuen 石耀霖 

作者机构：Laboratory of Computational GeodynamicsGraduate University of Chinese Academy of Sciences Department of Geology and Geophysics and Minnesota Supercomputing InstituteUniversity of MinnesotaMinneapolisMN 55415USA 

出 版 物：《Journal of Earth Science》 (地球科学学刊（英文版）)

年 卷 期：2011年第22卷第2期

页      面：176-181页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0708[理学-地球物理学] 0818[工学-地质资源与地质工程] 0704[理学-天文学] 

基　　金：supported by the National Basic Research Pro-gram of China (No. 2008CB425701) the National Natural Science Foundation of China (No. 40774049) the National Science and Technology Project (No. SinoProbe-07) Institute of Earthquake Science,China Earthquake Administration,and Senior Visiting Professorship of Chinese Academy of Sciences CMG Program of the U.S. National Science Foundation 

主　　题：parallel simulation rheology,ice-rock mixture Mars. 

摘      要：The distribution and amount of ground ice on Mars is an important issue to be addressed for the future exploration of the *** occurrence of interstitial ice in Martian frozen ground is indicated by landforms,such as fluidized ejecta craters,softened terrain,and fretted ***-ever,experimental data on the rheology of ice-rock mixture under Martian physical conditions are sparse,and the amount of ground ice that is required to produce the viscous deformation observed in Martian ice-related landforms is still *** our study,we put forward a three-dimensional non-Newtonian viscous finite element model to investigate the behavior of ice-rock mixtures *** randomly distributed tetrahedral elements are generated in regular domain to represent the natural distribution of ice-rock *** simulation results show that when the volume of rock is less than 40%,the rheology of the mixture is dominated by ice,and there is occurrence of a brittle-ductile transition when ice fraction reaches a certain *** preliminary results contribute to the knowledge of the determination of the rheology and ice content in Martian ice-rock *** presented model can also be utilized to evaluate the amount of ground ice on Mars.