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Proceedings Paper

Calculation of geoid undulations and gravity anomalies in the South China Sea by using the TOPEX/Poseidon and Geosat altimeter data
Author(s): Youguang Zhang; Jie Zhang; Yonggang Ji; Huiqin Zhang
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Paper Abstract

In this paper, using TOPEX/Poseidon (9~346cycle) and Geosat/ERM(1~60cycle) altimeter data, the author applies combined adjustment model for calculating the South China Sea geoid undulations after data preprocessing. The difference between calculation result and OSU91A model is 30cm (spatial resolution is 22km). In addition, 12’x12’ South China Sea gravity anomalies are calculated by using above geoid data and improved Stokes inverse formula. Contrasted with Scripps Institution of Oceanography gravity anomalies data, the accuracy of computation of gravity anomalies is 12´x10-5m/s2. These computations show that calculation speed is fast and calculation efficiency is high, so the method can calculate rapidly gravity anomalies in special sea area.

Paper Details

Date Published: 8 May 2003
PDF: 8 pages
Proc. SPIE 4892, Ocean Remote Sensing and Applications, (8 May 2003); doi: 10.1117/12.466798
Show Author Affiliations
Youguang Zhang, Institute of Oceanology (China)
First Institute of Oceanography, SOA (China)
Jie Zhang, First Institute of Oceanography, SOA (China)
Key Lab. of Marine Science and Numerical Modeling, SOA (China)
Yonggang Ji, First Institute of Oceanography, SOA (China)
Huiqin Zhang, NeiMongol Univ. (China)

Published in SPIE Proceedings Vol. 4892:
Ocean Remote Sensing and Applications
Robert J. Frouin; Yeli Yuan; Hiroshi Kawamura, Editor(s)

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