| 论重力归算 |
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| 引用本文： | 李志远,邢乐林,肖亮明,蒋胜华.论重力归算[J].大地测量与地球动力学,2007,27(Z1):49-52. |
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| 作者姓名： | 李志远 邢乐林 肖亮明 蒋胜华 |
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| 作者单位： | 1)武汉大学测绘学院,武汉 4300792)中国地震局地震研究所,武汉 4300713)金坛市国土资源局,金坛 2130004)武汉市勘测设计研究院,武汉 430022 |
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| 摘 要： | 利用构造参考地球模型的观点解释重力归算的物理意义。通过对不同模型的比较表明,厘米级大地水准面的确定必须考虑地球内部质量分布的不均匀性，且密度数据的精度应达到0.001 g/cm 3。
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| 关 键 词： | 重力归算 大地水准面 参考地球模型 密度横向分布 地球重力场 |
ON GRAVITY REDUCTION |
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| Li Zhiyuan,Xing Lelin,Xiao Liangming,Jiang Shenghua.ON GRAVITY REDUCTION[J].Journal of Geodesy and Geodynamics,2007,27(Z1):49-52. |
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| Authors: | Li Zhiyuan Xing Lelin Xiao Liangming Jiang Shenghua |
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| Institution: | 1)School of Geodesy and Geomatics of Wuhan Universtiy, Wuhan 4300792)Institute of Seismology, CEA, Wuhan 4300713)Municipal Bureau of Land and Resources of Jingtan,Jingtan 2130004)Wuhan Geotechnical Engineering and Surveying Institute,Wuhan 430022 |
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| Abstract: | In this paper we have explained the physical mechanism of gravity reduction in the view of constructing the reference earth model. Through the comparison of different models, the conclusion can be drawn that the inhomogeneous of mass distribution of earth interior should be taken into account and the accuracy
of lateral density should reach 0.001 g/cm 3 when determining a cm level geoid. |
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| Keywords: | gravity reduction geoid reference earth model lateral density variations earth gravity field |
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