Acta Geodaetica et Cartographica Sinica >

2017 , Vol. 46 >Issue 9: 1073 - 1079

DOI: https://doi.org/10.11947/j.AGCS.2017.20160552

1'×1' Vertical Deflection and Its Precision Evaluation on China West Pacific Ocean Region

  • WANG Hubiao ,
  • WANG Yong ,
  • CAI Hua ,
  • BAO Lifeng
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  • State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 43007, China

Received date: 2016-11-02

  Revised date: 2017-06-23

  Online published: 2017-10-12

Supported by

The National Natural Science Foundation of China (Nos. 41374086;41274084;41574073);The National Key R & D Program(Nos. 2016YFB0501700;2016YFB0501705)

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Abstract

Weighted-calcaulation method is designed by combining distance between observing points with height-measurement accuracy. With weighted least squares and the Vening-Meinesz formula,two 1'×1' digital vertical deflection grid models on a certain West Pacific Ocean region (0°N-40°N,105°E-145°E) are respectively constructed by use of multiple altimetry data and gravity anomaly,and the two models are compared to EGM2008 on two chosen typical regions. The results show that, the prime vertical component η is slightly larger than the meridian component ξ, and the root mean square error of derived vertical deflection on Southern China Sea where there is the complex seafloor topography is larger than the middle of West Pacific ocean. In addition, the root mean square error of two constructed models are generally less than 1.6".

Key words： satellite altimetry; vertical deflection; weighted least squares; Vening-Meinesz; EGM2008

Cite this article

WANG Hubiao , WANG Yong , CAI Hua , BAO Lifeng . 1'×1' Vertical Deflection and Its Precision Evaluation on China West Pacific Ocean Region[J]. Acta Geodaetica et Cartographica Sinica, 2017 , 46(9) : 1073 -1079 . DOI: 10.11947/j.AGCS.2017.20160552

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