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《Journal of Geodesy and Geodynamics》 2007-02
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SIMULATION OF INFLUENCE OF LOWER-VELOCITY LAYER ON INTENSITY OF QINGHAI-TIBET PLATEAU LITHOSPHERE WITH 3D FINITE ELEMENT METHOD

Yang Hui1,2)and Wang Yong1)  
The downward deflection of the Qinghai-Tibet lithosphere due to the topographical load is calculated with finite element method by use of the 3D multilayered shell structural unit.Then,the influence of the lower-velocity layer of thermokarst on the intensity of the Qinghai-Tibet lithosphere in different regions is studied with multilayered mechanical model,based on the seismic-wave velocity structural model and the constrained Moho model.The results show that the lower-velocity layer of thermokarst has a stronger influence on the lithosphere in the eastern region of the Qinghai-Tibet plateau than that in the western region.
【Fund】: 中国科学院知识创新工程重要方向项目(KZCX2-YW-125);; 国家自然科学基金(40574033)
【CateGory Index】: P313
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