Studies on Gravity Tides in King George Island, Antarctica

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 Mwave by oceanic tide reaches 20% of body tide magnitude, and leading phase is 6.7°. The obtained gravity tidal factors of this region areδ=1.2178±0.0061, △φ=2.13±0.25°,δ=1.2350±0.0045, △φ=-0.53±0.16°.