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利用GPS跟踪站的观测结果,首次获得了东亚地区板内及板缘地壳水平运动较准确的运动速率,据此分析了我国大陆及周围地区地壳水平运动的特征。结果显示:我国大陆存在着明显的向东运动趋势,从西向东位移速率逐步减小;南北向的运动差异很大,西部青藏高原存在明显的向北运动,东部存在明显的向南运动趋势。探讨了地壳水平运动的动力学问题,认为板内及板缘地壳水平运动的最直接、最主要的推动力是板块之间的相互作用力,重力势能差也是板内地壳水平运动的一个重要驱动力。
Based on the observation results of GPS tracking stations, the more accurate velocity of crustal horizontal motion in the intraplate and slab margins in East Asia was obtained for the first time. Based on the above analysis, the crustal horizontal motion in the continental and surrounding areas of China was analyzed. The results show that there is a clear eastward movement trend in China, and the displacement rate decreases gradually from west to east. The movement in the north and south directions is quite different. There is a clear northward movement in the western Tibetan Plateau and a clear southward movement in the east. The dynamics of the crustal horizontal motion is discussed. It is considered that the most direct and primary driving force of horizontal crustal and intra-crustal crustal motions is the interaction between plates, and the difference in gravitational potential is also an important driving force for horizontal crustal movement force.