Displacement Back Analysis Model And Dynamic Simulation On The Crustal Deformation Of Qinghai-Tibet Plateau

On the basis of careful analyses on the measurement data of the crustal deformation of Qinghai-Tibet Plateau and the research on the modern crustal deformation model, the geodynamic and physical model has been studied. The back analysis model of the crustal deformation in Qinghai-Tibet Plateau has been programmed according to Finite Elementary Back Analysis Method and the Error theory. Then, media parameters of the crust, boundary function forces of the area and the Finite Elementary Analyses Model were reversibly simulated. Linking up with the Plateau crustal deformation back analyses model, the tectonic deformation was also simulated. By means of GPS velocity field data, the synthetically crustal media parameters of the plateau were reversibly analyzed, as well as the simplified boundary function forces. Thus, the moving tectonic characteristics of the plateau were analyzed macroscopically. Finally, the main conclusions are that the majority of tectonic deformation of the plateau is the N-S compression and the minority is the W-E stretching. The main reasons of causing current tectonic situation are the continual India-Eurasia collision. The tectonic deformation of the plateau, in which fault belts were included, was simulated at the later stage. At the same time, the occurrence, evolution and formation principles of the plateau were all researched.