Analysis and comparison of the tidal gravity observations obtained with LCR-ET20 spring gravimeter

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 an...

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Bibliographic Details
Published in:Acta seismologica sinica 2002-09, Vol.15 (5), p.533-539
Main Authors: Sun, He-ping, Chen, Xiao-dong, Liu, Ming, Zhou, Bai-li
Format: Article
Language:English
Subjects:
Analysis
and
atmospheric
characteristic
Comparative analysis
gravimeters
Gravity
influence
instrument
International standards
oceanic
Spring
superconducting
the
tides
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Summary: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.
ISSN:1000-9116
1674-4519
1993-1344
1867-8777
DOI:10.1007/s11589-002-0022-1