Refining geoid and vertical gradient of gravity anomaly

We have derived and tested several relations between geoid （N） and quasi-geoid （~） with model validation. The elevation correction consists of the first-term （Bouguer anomaly） and second-term （vertical gradient of gravity anomaly）. The vertical gradient was obtained from direct measurement and terra...

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Bibliographic Details
Published inGeodesy and Geodynamics Vol. 2; no. 4; pp. 1 - 9
Main Authors Chijun, Zhang, Shaofeng, Bian, Zhourun, Yi, Lingtao, Liu, Jian, Fang
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.11.2011
Institute of Geodesy and Geophysics, Chinese Academy Science, Wuhan 430077, China%Naval Engineering University, Wuhan 430033, China
KeAi Communications Co., Ltd
Subjects
geoid
gravity anomaly
quasi-geoid
refine
vertical gradient
似大地水准面
厘米级
垂直梯度
布格异常
模型验证
直接测量
精炼
重力异常
refine
vertical gradient
quasi-geoid
geoid
gravity anomaly
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Summary:We have derived and tested several relations between geoid （N） and quasi-geoid （~） with model validation. The elevation correction consists of the first-term （Bouguer anomaly） and second-term （vertical gradient of gravity anomaly）. The vertical gradient was obtained from direct measurement and terrain calcula- tion. The test results demonstrated that the precision of geoid can reach centimeter-level in mountains less than 5000 meters high.
Bibliography:refine ; geoid ; quasi-geoid ; gravity anomaly ; vertical gradient
We have derived and tested several relations between geoid （N） and quasi-geoid （~） with model validation. The elevation correction consists of the first-term （Bouguer anomaly） and second-term （vertical gradient of gravity anomaly）. The vertical gradient was obtained from direct measurement and terrain calcula- tion. The test results demonstrated that the precision of geoid can reach centimeter-level in mountains less than 5000 meters high.
42-1806/P
ISSN:1674-9847
DOI:10.3724/SP.J.1246.2011.00009