Studies on Gravity Tides in King George Island, Antarctica  

作　　者：吕纯操 许厚泽 郝兴华 倪志宏 

机构地区：[1]Institute of Geodesy and Geophysics, Academia Sinica, Wuchang 430077, PRC

出　　处：《Science China Chemistry》1993年第3期350-357,共8页中国科学（化学英文版）

基　　金：This work is supported by the National Antarctic Investigation Committee and the National Natural Science Foundation of China.

摘　　要：By utilizing LCR-G gravimeter, 342-day available gravity tide observations were obtained in King George Island, Antarctica. Analytical results show that mean errors of tidal factor δ and phase delay △φ for main waves are less than 0.6% and 0.3° respectively. By using the Schwiderski cotidal map to make oceanic tide correction, we discover that the effect on M_2 wave by oceanic tide reaches 20% of body tide magnitude, and leading phase is 6.7°. The obtained gravity tidal factors of this region areδ_(O_1)=1.2178±0.0061, △φ_(O_1)=2.13±0.25°,δ_(M_2)=1.2350±0.0045, △φ_(M_2)=-0.53±0.16°.By utilizing LCR-G gravimeter, 342-day available gravity tide observations were obtained in King George Island, Antarctica. Analytical results show that mean errors of tidal factor δ and phase delay △φ for main waves are less than 0.6% and 0.3° respectively. By using the Schwiderski cotidal map to make oceanic tide correction, we discover that the effect on M₂ wave by oceanic tide reaches 20% of body tide magnitude, and leading phase is 6.7°. The obtained gravity tidal factors of this region areδ_O₁=1.2178±0.0061, △φ_O₁=2.13±0.25°,δ_M₂=1.2350±0.0045, △φ_M₂=-0.53±0.16°.

关 键 词：GRAVIMETER calibration TIDAL factor phase delay HARMONIC analysis TIDE correction. 

分 类 号：O6[理学—化学]