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为了研究中国大陆现代地壳运动和地球动力学 ,在 90年代初布设了由 2 2个站组成的全国GPS监测网 ,测站均匀布设在中国大陆不同块体上 ,1992、1994和 1996年对该网进行了3次观测。本文主要评述了 3次观测的资料处理和精度 ,分析了 3次复测获得的中国大陆现今块体运动的基本特征。研究结果表明 ,GPS网 3次观测获得的资料精度均达到 10 - 8～ 10 - 9,能满足地壳运动监测的需要。利用 3次复测资料结果所建立的我国大陆块体运动模型 ,有效地检验了地质学和地球物理学的研究结果。在全球框架中 ,我国大陆整体存在着明显的向东运动 ,相对于西伯利亚的区域性运动特征是 :我国西部地区主要受印度板块向北的俯冲和推挤的影响 ,青藏高原在南北向压缩的同时 ,存在着明显的向东的侧向滑移 ,这对大陆逃逸模型是较为有利的支持 ;东部地区的块体运动 ,同时受到印度板块以及太平洋板块、菲律宾板块的联合作用 ,导致了东部地区的北东向及东向的运动 ,到达东南沿海地区 ,菲律宾板块的影响增强
In order to study the modern crustal movement and geodynamics in mainland China, a national GPS monitoring network consisting of 22 stations was laid in the early 1990s. The stations were uniformly arranged on different blocks in mainland China. In 1992, 1994 and 1996, Net conducted three observations. This paper reviews the data processing and accuracy of the three observations and analyzes the basic features of the current block motion in mainland China obtained by three retesting. The results show that the accuracy of the data obtained by three observations of GPS network reaches 10 - 8 ~ 10 - 9, which can meet the need of crustal movement monitoring. Based on the results of three times of retesting data, the motion model of the continental block in China is validated to verify the research results of geology and geophysics. In the global framework, there is a clear eastward movement in mainland China as a whole. The characteristics of regional movements relative to Siberia are as follows: The western part of China is mainly affected by the subduction and pushing northward of the Indian plate, and the compression of the Tibetan Plateau along the north- At the same time, there is a clear lateral slip to the east, which is more favorable to the Continental Escape Model. The eastern part of the block movement, at the same time by the Indian plate and the Pacific plate, the Philippine plate joint effect, led to the eastern region North east and east of the movement, arrived in the southeast coastal areas, the impact of the Philippine plate to enhance