| GPS跟踪站观测的初步结果所揭示的板内及板缘地壳水平运动 |
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| 引用本文： | 李延兴,胡新康,赵承坤,王敏,郭良迁,徐菊生.GPS跟踪站观测的初步结果所揭示的板内及板缘地壳水平运动[J].大地测量与地球动力学,1998(2). |
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| 作者姓名： | 李延兴 胡新康 赵承坤 王敏 郭良迁 徐菊生 |
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| 作者单位： | 国家地震局第一地形变监测中心，国家地震局地震研究所 |
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| 摘 要： | 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。
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| 关 键 词： | GPS跟踪观测 地壳水平运动速率 动力学因素 |
INTRAPLATE AND PLATE MARGIN HORIZONTAL CRUSTAL DEFORMATION REVEALED BY PRELIMINARY RESULTS OBSERVED AT GPS TRACING STATIONS |
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| Li Yanxing,Hu Xinkang,Zhao Chengkun,Wang Min and Guo Liangqian.INTRAPLATE AND PLATE MARGIN HORIZONTAL CRUSTAL DEFORMATION REVEALED BY PRELIMINARY RESULTS OBSERVED AT GPS TRACING STATIONS[J].Journal of Geodesy and Geodynamics,1998(2). |
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| Authors: | Li Yanxing Hu Xinkang Zhao Chengkun Wang Min and Guo Liangqian |
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| Abstract: | Based on the results observed at GPS tracing stations,more accurate movement rate of intraplate and plate margin horizontal crustal deformation in East Asia has been obtained for the first time.The characteristics of horizontal crustal deformation in the continent of China and the surrounding areas are analyzed in this paper.The continent of China has an obvious eastward motion with a gradual decrease of displacement rate from west to east.The movements in the south differ greatly from north directions.The Qingzang Plateau in the west has an obvious northward movement, while in the east,there is a clear southward motion trend.The dynamic problems of horizontal crustal deformation are also approached in the paper.The authors suggest that the most direct and most important driving force of intraplate and plate-margin horizontal crustal movement is the mutual active force among the plates.The difference of gravity potential energy is also an important factor for the intraplate horizontal crustal movement. |
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| Keywords: | GPS tracing observation horizontal crustal deformation dynamic oringins |
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