On Local Deflections of the Vertical Based on EGM2008 and In Situ Data

Abstract:

The Earth gravitational field model EGM2008 with the high resolution has been applied in data processing and analysis in practical geodetic and geophysical study. We calculate the deflection of the vertical on testing areas in China from EGM2008 with the different grids based on the geopotential theory. What’s more, the precisions of the deflection of the vertical determined with EGM2008 up to different degrees and orders are compared and analyzed by calculating the actual astro-geodetic data and modelled data to evaluate the regional quality of EGM2008 with in situ data. Precisions of meridian and prime vertical components of vertical deflections estimated with EGM2008 up to 2190 degrees are 1.59″ and 1.74″, respectively.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 2899-2903
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.2899
• Online since: May 2012
• Authors: Xin Liu, Li Guo Zhang, Jin Yun Guo, Xiao Lei Ju, Zhao Qiu Mai
• Keywords: Deflection of the Vertical, Earth Gravity Field Model, EGM2008

References

[1] H.Z. Xu, X.H. Zhou and B.B. Peng: Geospatial Information, Vol. 3(1)(2005), p.1

[2] J.C. Li, J.Y. Chen, J.S. Ning, and D.B Chao: Earth gravity field approaching method and determination of Chinese quasigeoid 2000 (Wuhan University Press, Wuhan 2003), in Chinese.

[3] C.M. Chen, and J.C. Li: Chinese Journal of Polar Research, Vol. 12(1)(2000), p.10, in Chinese.

[4] J.Y. Guo, C. Hwang, J.G Hu and J.C Li: Geomatics and Information Science of Wuhan University, Vol. 32(1)(2007), p.11, in Chinese.

[5] J.Y. Guo, J.G. Hu, X.J. Zhu and X.T. Chang: Journal of Shandong University of Science and Technology (Natural Science Edition), Vol. 23(2)(2004), p.19, in Chinese.

[6] J.Y. Guo, J.G. Hu, X.T. Chang and X.J. Zhu: Science of Surveying and Mapping, Vol. 30(6)(2005), p.19, in Chinese.

[7] B. Qiu, J.J. Zhu and K.J. Le: Science of Surveying and Mapping, Vol. 33(5)(2008), pp.25-27, in Chinese.

[8] Z.L. Guan and J.S. Ning: Earth shape and its exterior gravity field (Surveying and Mapping Press, Beijing 1981), in Chinese.

[9] J.Y. Guo, Y. Sun, X.T. Chang and F.L. Yang: Natural Science, Vol. 3(5)(2011), p.339.

[10] C.Y. Zhang, C.X. Guo, J.Y. Chen, L.M. Zhang and B. Wang: Acta Geodaetica et Cartographica Sinica, Vol. 38(4)(2009), p.283, in Chinese.

[11] N.K. Pavlis, S.A. Holmes, S.C. Kenyon and J.K. Factor: An Earth gravitational model to degree 2160: EGM2008 (EGU General Assembly, Vienna 2008)

[12] H Moritz: Advanced Physical Geodesy (Herbert Wichmann Verlag, Karisruhe 1980)

[13] Z.L. Lu: Theory and method of earth gravity field (PLA Press, Beijing, 1996), in Chinese.

[14] B Tian, J Li and W.B. Shen: Science of Surveying and Mapping, Vol. 34(suppl)(2009), p.5, in Chinese.