Analysis of the tidal gravity observations in Three Gorges reservoir area
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- 作者：Xiao-dong Chen (1) (2) (3)
He-ping Sun (1) (2)
Guo-qing Hu (4)
Da-peng Xiang (4)
Xing-hua Hao (1)
Ming Liu (1)
Chuan-zhong Zhang (4)
Qu Yuan (4) - 关键词：Three Gorges reservoir area ; tidal gravity observation ; comparison of the tidal gravimeters ; P312.4
- 刊名：Earthquake Science
- 出版年：2007
- 出版时间：September 2007
- 年：2007
- 卷：20
- 期：5
- 页码：523-531
- 全文大小：392KB
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He-ping Sun (1) (2)
Guo-qing Hu (4)
Da-peng Xiang (4)
Xing-hua Hao (1)
Ming Liu (1)
Chuan-zhong Zhang (4)
Qu Yuan (4)
1. Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan, 430077, China
2. Key Laboratory of Dynamical Geodesy, Chinese Academy of Sciences, Wuhan, 430077, China
3. Graduate School of Chinese Academy of Sciences, Beijing, 100049, China
4. Institute of Seismology, China Earthquake Administration, Wuhan, 430071, China - ISSN：1867-8777
文摘
The comparative observations of the tidal gravity in Three Gorges reservoir area, recorded with the LCR-ET20 gravimeter from Institute of Geodesy and Geophysics, Chinese Academy of Sciences and the DZW-9 gravimeter from Institute of Seismology, China Earthquake Administration, are introduced. High-accuracy tidal gravity parameters in this area are obtained, and the scale factor of the DZW-9 gravimeter is also estimated at a value of 756.06±0.05)×10 m·sV. The observed residuals of the corresponding instruments are investigated. Numerical results indicate that the long-term drift of the DZW-9 gravimeter appears a linear characteristic, and the observed accuracy is of the same order comparing with that of the LCR-ET20 gravimeter. The results given in the paper can provide with an effective reference model of the tidal gravity correction to the ground based and space geodesy.