摘要
讨论了绝对重力观测中的潮汐改正问题 ,重点对绝对重力观测中的海潮负荷影响进行了研究。利用 3个不同地区大潮期间的绝对重力观测结果 ,对目前国际上几个精度较高的海潮模型进行了检验。结果表明 ,用目前国际上几个新的精度较高的海潮模型作海潮负荷影响改正明显好于以往采用的Schwiderski海潮模型。沿海地区大潮期间的绝对重力观测结果经过海潮改正后 ,观测精度虽能得到明显提高 ,但很难达到 2× 10 -8m·s-2 。
The tide correction of absolute measurements is discussed in detail. We emphasize on the oceanic loading effects on absolute gravity measurements.Taking the absolute gravity observational results at three different stations for example,some tide models which are widely used in world recently are tested. The results indicate that these tide models are better than Schwiderski tide model.Although the accuracy of observational results after ocean loading correction at stations near coast during the big tide period has improved,it is somewhat difficult to reach the level of 2×10\+\{-8\}m·s\+\{-2\}.
出处
《大地测量与地球动力学》
CSCD
2003年第2期65-68,共4页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金 ( 4 0 2 740 2 0 )
中科院知识创新 (KZCX2 -10 6)
