摘要
基于现有的几种海流计算方法,根据与P矢量法相同的动力特性和内在假设,对海流计算提出了一种简单、高效、易扩展、适用范围广的新方法:非线性共轭梯度法.利用1989年4月以来的"中日黑潮合作调查研究"6个航次的CTD资料,对东海黑潮流区域应用非线性共轭梯度法进行了海流计算.通过与船载ADCP实测结果比较表明,非线性共轭梯度法是可行的.
Based on several methods of geostrophic velocity calculation, nonlinear conjugate gradient method is introduced. Sharing the same dynamical characteristics and inherent hypotheses with PV method, this approach is simple,effective,easy-expanded and wide-applicable. By using of this method, geostrophic velocity of Kuroshio in the East China Sea is studied using the CTD data of six cruises gained in the Sino-Japan joint investigation and the study on the Kuroshio since April 1989. Compared with observation data of shipbroad ADCP,the nonlinear conjugate gradient method has been proved feasible.
出处
《海洋学报》
CAS
CSCD
北大核心
2003年第6期31-38,共8页
基金
国家重点基础研究发展规划资助项目(G1999043802).
关键词
非线性共轭梯度法
东海
黑潮流
海流计算
nonlinear conjugate gradient method, Kuroshio in the East China Sea, method application
