海潮对重力固体潮的影响

本文研究了海潮重力负荷效应的计算方法和中国大陆海潮(M2波)负荷效应的空间分布特征.给出了顾及测站高程的计算负荷效应的公式.从理论上证明了应该改化'n因子,这样不仅消除了由伪潮高所产生的误差|2fH*|,而且使引力项加快了一阶收敛速度.对已有的远近区结合法作了进一步的研究,确定了截断角0和逼近阶数 m 之间的取值关系,认为取0=12和 m=17是最合适的.计算了中国大陆共200个点的负荷效应,给出振幅分布图,并且就其分布特征进行了讨论. 

EFFECTS OF OCEAN LOADING ON GRAVITY TIDE

In this paper we deal with the problems in the calculation of ocean loading effects (M2) on gravity tide and its space distribution in continental China.A calculating method is proposed in which the elevation of the calculated station is taken into account. The facter n must be transformed in theory so that the gravitational force term will have the same speed of convergence as the elastic term and the error |2fH*| is eliminated naturally. The method is further studied so that it combines the integral and approximation methods. The relation between the truncation angle 0 and the approximation order m are determined. The best way is: 0= 12 and m = l7. Effects of ocean loading on gravity tide of 200 points in China are calculated. The space distribution of the effects are given and discussed.