论文部分内容阅读
利用GEOSAT卫星在1987年和1988年执行ERM任务的雷达高度计资料来分析获取南海海面动力高度偏差的季节分布．根据卫星轨道误差和海域的特点，提出了适用于内海及边缘海域的二维共线轨道校正法，由此方法而得出的南海海面动力高度偏差的季节分布表明，南海表层流场在夏季总的环流形势是反气旋式环流，而冬季是气旋式环流．分析的结果同海上常规调查资料的分析结果相比较表明，在海流季节变化信号较强的海区（如南海中部和北部海区），利用高度计资料能很好地反映该海区的海流季节变化特征．
The satellite altimetry data from the EROS mission carried out by GEOSAT in 1987 and 1988 were used to analyze the seasonal distribution of the South China Sea surface sea level deviation. According to the satellite orbit error and the characteristics of the sea area, a two-dimensional cosine orbit correction method is proposed for the inland and marginal seas. The seasonal distribution of the South China Sea surface power level deviation obtained from this method shows that the surface flow in the South China Sea The circulation situation is an anti-cyclonic circulation, while the winter is a cyclonic circulation. The results of the analysis are compared with those of the conventional survey data from the sea, which shows that using altimeter data can well reflect the seasonal variation of current in the sea area where the seasonal variation signal of the current is strong (such as the central and northern parts of the South China Sea).