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《Chinese Journal of Geophysics》 1989-01
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EAST-WEST GRAVITY TIDAL PROFILE OF CHINA

MAO HUI-QIN HSU HOU-TSE SONG XING-LI CHEN ZHEN-BANG(Institute of Geodesy and Geophysics, Acadcmia Sinica, Wuhan)  
In order to examine the theoretical Earth body tides and oceanic models, East-West gravity tidal profile of China is analysed. A vertical gavity baseline using 17 LaCoste G and 2 LaCoste D gravity meters has been established for checking manufacturer's calibrations of LaCoste ET model 20 and 21 gravity meters. The results of calibrations on the gravity baseline show that the manufacture's calibration of ET-21 is higher by 1%. The gravity tidal factors for all stations of profile have been calculated using ET-21 calibration coefficient. The tidal factors after ocean tides correction approach to the value of Wahr model and the residuals of amplitude factors are less than 0.3 μGal for O1, 0.4μGal for M2. However, the corrected tidal factors M2 at Shanghai and Ihasa stations, the phase lags are much better than before, but the amplitude factors deviate from the value of the theoretical model. Because the Shanghai station is near the Hangzhou Bay and Lasa is near Bay of Bengal and located at a place where the crustal thickness is larger and varies quickly, the tidal anomalies may be caused by ocean model and lateral heterogenity of the lithosphere and upple mantle.
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【References】
Chinese Journal Full-text Database 2 Hits
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【Co-references】
Chinese Journal Full-text Database 10 Hits
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【Secondary References】
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