摘要
合成潮是一种半理论和半实测的潮汐信号。综合采用武汉国际重力潮汐基准值、非弹性地球潮汐理论模型、地球近周日摆动对周日重力潮汐观测的共振影响以及全球和局部海洋潮汐的负荷效应，精密确定了武汉基准台的重力合成潮信号，与同一段时间内超导重力仪的实测潮汐信号的均方差为０ ．２２５ ×１０ － ８ ｍ／ｓ２ 。
The synthetic tides are the tidal signal containing theoretical model and observations. In this study, the international gravity tidal reference values at Wuhan, theoretical tidal model based on the anelastic earth model, the resonant influence of the observed gravimetric parameters in diurnal tides duo to the nearly diurnal free wobble of the earth and the effect of the oceanic loading based on the global and local co tides are used comprehensively to determine accurately the synthetic gravity tides at Wuhan fundamental station. The mean square error between the synthetic gravity tides and the observations recorded with a superconducting gravimeter at Wuhan is 0.225×10 -8 m/s 2.
出处
《地壳形变与地震》
CSCD
1999年第3期26-31,共6页
Crustal Deformation and Earthquake
基金
国家自然科学基金
中国科学院重点基金
关键词
合成潮
重力潮
潮汐理论模型
共振影响
负荷效应
synthetic gravity tides, international gravity tidal reference values, theoretical tidal model, resonant enhance, influence of the oceanic loading
