三次样条函数在海洋水文资料整理中的应用

THE APPLICATION OF CUBIC SPLINE FUNCTION TO THE PROCESSING OF OCEAN DATA

本文引入三次样条函数插值法,并尝试用于海洋资料处理。根据渤海及北黄海部分海洋站的历史资料进行了试验。用SHARP—PC—1211袖珍计算机进行计算,并将资料处理的结果与传统的过程曲线法订正值作了比较。结果表明,二者之间的误差不大,而样条函数拟合更好。作者认为三次样条函数插值法是可行的,在处理海洋资料时间序列中是有效的。在有温跃层的地方,如何应用,本文也给出了必要的说明。

This paper introduces the interpolating method of cubic splines, and tries to use it in the processing of ocean data. The experiment is based on the historical data of some oceanographic stations in part of the North Yellow Sea and Bohai Sea, and the calculation is made with the SHARP-PC-1121 pocket-size computer and a comparison is made between the results of the processed data and the correction value of traditional process curves.The results show that the error between the two is small and the spline fit is good, thus showing the method of interpolation of cubic splines is feasible and effective in processing the ocean data of the time series. This paper gives a necessary explanation as how to apply it to the place where there is a thermocline.