Abstract In order to analyze the effects of the rheological properties against the contemporary tectonic deformation of the Tibet plateau, we carries out numerical simulation by building up a 3D finite element viscoelastic model which use the standard linear solid model’s constitutive relation. The results show following characteristics.1) Under the control of rheological mechanism of crustal medium, the eastward displacement components become bigger and bigger from west to east in the Tibet plateau. The maximum appears in the region south to GanziYushuXianshuihe faults, it implies that the mass under the Tibet plateau flow eastward. 2) The model simulated contemporary tectonic movement characteristics in this region which show that in the middle and south part of the rhombus block, the southwest parts of SichuanYunnan region clockwise rotate around the Himalaya eastern tectonic joint. The crust moves southeastward in the east while southwestward in the west. 3) The results of two models with stronger rheological property in middle crust and in lower crust respectively have similar characteristics: both can model the eastward flow in plateau and clockwise rotation around the eastern Himalayan syntax. 4) The rheological properties play an important role in the tectonic deformation of Tibet plateau.
Chen Lianwang,Zhan Zimin,Ye Jiyang et al. NUMERICALLY MODELING THE INFLUENCE OF RHEOLOGICALPROPERTIES ON TECTONIC DEFORMATION OF TIBET PLATEAU[J]. , 2011, 31(3): 8-14.
Chen Lianwang,Zhan Zimin,Ye Jiyang et al. NUMERICALLY MODELING THE INFLUENCE OF RHEOLOGICALPROPERTIES ON TECTONIC DEFORMATION OF TIBET PLATEAU[J]. jgg, 2011, 31(3): 8-14.
