| 地球自转和固体潮对地球重力场时变特征的影响 |
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| 引用本文： | 张捍卫,柴洪洲,王占统,郑勇,刘长建.地球自转和固体潮对地球重力场时变特征的影响[J].大地测量与地球动力学,2002,22(1):76-80. |
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| 作者姓名： | 张捍卫 柴洪洲 王占统 郑勇 刘长建 |
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| 作者单位： | 1. 中国科学院测量与地球物理研究所,武汉,430077,解放军信息工程大学测绘学院,郑州,450052
2. 解放军信息工程大学测绘学院,郑州,450052 |
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| 基金项目： | 国家自然科学基金 (4 0 1740 0 2 )，测绘遥感信息工程国家重点实验室基础研究项目 (WKL(99) 0 2 0 1)资助 |
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| 摘 要： | 精密和详细测定地球重力场及其时间变化，是目前卫星重力测量的主要课题。基于高精度的固体潮展开，研究了地球自转和固体潮对地球重力场时变特性的影响。给出了适合应用于潮波法的理论公式，该公式不同于IERS（92）（96）历书频谱法公式，考虑了4阶潮汐效应，精度可达到10^-11ms^-2量级。改正了IERS（96）关于永久性潮汐处理的不妥之处，即指出要用长期Love数代替固体潮Love数的理由，并利用潮汐数据进行了计算，给出了理论公式可为高精度地球重力场时变特性的研究提供理论参考和依据。
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| 关 键 词： | 地球自转 固体潮 地球重力场 引力位系数 时变特征 |
| 文章编号： | 1671-5942(2002)01-0076-05 |
| 修稿时间： | 2001年7月12日 |
THE INFLUENCE OF EARTH ROTATION AND EARTH TIDE TO THE TIME VARYING CHARACTERISTICS OF GRAVITATIONAL FIELD |
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| Zhang Hanwei\\{,\},Chai Hongzhou\\{\},Wang Zhantong\\{\},Zheng Yong\\{\} and Liu Changjian\\{\}\,Institute of Geodesy and Geophysics,CAS,Wuhan Institute of Surveying and Mapping,The PLA Information Engineering University.THE INFLUENCE OF EARTH ROTATION AND EARTH TIDE TO THE TIME VARYING CHARACTERISTICS OF GRAVITATIONAL FIELD[J].Journal of Geodesy and Geodynamics,2002,22(1):76-80. |
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| Authors: | Zhang Hanwei\\{ \} Chai Hongzhou\\{\} Wang Zhantong\\{\} Zheng Yong\\{\} and Liu Changjian\\{\}\ Institute of Geodesy and Geophysics CAS Wuhan Institute of Surveying and Mapping The PLA Information Engineering University |
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| Institution: | Zhang Hanwei\+\{1,2)\},Chai Hongzhou\+\{2)\},Wang Zhantong\+\{2)\},Zheng Yong\+\{2)\} and Liu Changjian\+\{2)\}\,1)Institute of Geodesy and Geophysics,CAS,Wuhan 430077 2)Institute of Surveying and Mapping,The PLA Information Engineering University |
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| Abstract: | At present, surveying gravitational field and its variation with time accurately and detailedly is a main subject of Gravisat.On the basis of high precision development of tide generating potential,we studied the time varying influence of earth rotation and earth tide to gravity field.This paper gives a theoretical equation adopted tide wave's method,which is defferent from Ephemeris Spectrum equation of IERS(92)(96).Considering the 4th order effect of body tide,the accuracy can achieve 10\+\{-2\}nms\+\{-2\}.We explained the reason of substituting long time Love number for earth-tide Love number and calculated it with tide data.The theoretical equation in this paper provided a theoretical reference base for the research with high precision on the time varying gravitational field. |
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| Keywords: | earth rotation earth tide gravitation field gravitational potential coefficient time varying characterstic |
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