用CSR4.0+CS模型计算海潮负荷改正

CALCULATION OF OCEANIC TIDE LOADING CORRECTION BY CSR4.0+CS MODEL

介绍了CSR3.0与CSR4 .0 +CS海潮模型 ,并对两模型进行了分析和实算比较 ,认为CSR4 .0 +CS比CSR3.0海潮模型精度更高 ,在计算中国测站海潮改正时 ,顾及中国近海海潮图是必要的。对我国第二期水准路线用CSR4 .0 +CS模型计算了海潮负荷改正 ,结果表明 :海潮负荷对高精度水准测量的影响 ,主要取决于水准路线的近海位置 ,越是近海地区越明显 ;在近海区域 ,这项改正不能忽略。

This paper introduces and analysis CSR3.0 and CSR4.0+CS Models.According to the compari-son between the two models we have drawn some conclusions that the precision of CSR4.0+CS model is higher than that of CSR3.0 model in the calculation of the tidal correction of Chinese offshore diagram. Here, the application of CSR4.0+CS model to calculate the leveling tidal load correction on Chinese leveling of second term shows that the influence of the tidal load on the precision of leveling mainly lies on the position of leveling route to offshore region, the nearer the route lies, the greater the influence of correction is, thus the correction can not be ignored.