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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