| Analysis and comparison of the tidal gravity observations obtained with LCR-ET20 spring gravimeter |
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| 作者姓名： | 孙和平 陈晓东 刘明 周百力 |
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| 作者单位： | SUN He-ping CHEN Xiao-dong LIU Ming ZHOU Bai-li Institute of Geodesy and Geophysics，Chinese Academy of Sciences，Wuhan 430077，China |
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| 基金项目： | National Outstanding Youth Foundation of China (49925411)，the Knowledge Innovation Foundation,Chinese Academy of Sciences (KZCX2-SW-131). |
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| 摘 要： | Introduction The tidal variation signals of the solid Earth recorded with the modern measuring techniques can be used to provide effectively the means to cognize the Earths motion, deformation and structure character, especially to monitor the material motion in the Earths interior. In the recent 20 years, the distribution character of the global gravity field has made great progress since the continuous and deep theoretical studies in geophysics and geodesy domains. The successful manufactur…
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| 收稿时间： | 5 February 2002 |
| 修稿时间： | 12 May 2002 |
Analysis and comparison of the tidal gravity observations obtained with LCR-ET20 spring gravimeter |
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| Sun He-ping , Chen Xiao-dong , Liu Ming and Zhou Bai-li.Analysis and comparison of the tidal gravity observations obtained with LCR-ET20 spring gravimeter[J].Acta Seismologica Sinica(English Edition),2002,15(5):533-539. |
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| Authors: | Sun He-ping Chen Xiao-dong Liu Ming and Zhou Bai-li |
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| Institution: | Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China |
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| Abstract: | Based on the tidal gravity observations recorded with LCR-ET20 spring gravimeter at Wuhan international fundamental tidal gravity station, the characteristics of the ET20 and the atmospheric and oceanic gravity signals are studied systematically by using international standard data pre-processing and analysis methods, and by comparing the results with those obtained using superconducting gravimeter (SG) at same station. The numerical results indicate that the identical tidal gravity parameters same as those with the SG are obtained, the instrument can be used effectively to record temporal change of the gravity field, though the accuracy of the ET20 is one order lower than that of the SG, and has also the large drift induced by the spring creep character. |
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| Keywords: | spring and superconducting gravimeters influence of the atmospheric and oceanic tides |
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