中文摘要：

冬季相反风的电流(也把华南称为海温暖的电流(SCSWC )) 在北华南，海(SCS ) 被了解十年，而是它的团和动量起源了份量上以前没被评估。在这篇论文，高 resolutionthree 维的海洋发行量模特儿被收养在 northernSCS 复制发行量。诊断分析被执行在北 SCScontinental 架 / 斜坡和 SCSWC 的动量推进中调查动量预算。当沿着架压力坡度被表面压力，底部压力，和 Coriolis 力量平衡时， theacross 架压力坡度和越过架运输为 SCSWC 的形成负责，这被显示。在沿着架动量方程的术语的大小在越过架那是比那小的。在北 SCS 的动量预算上的分析以后将有益于海洋的环境预言。

英文摘要：

The winter counter-wind current （also named the South China Sea Warm Current （SCSWC）） in the northern South China Sea （SCS） has been known well for decades, but its mass and momentum origination have not be quantitatively evaluated before. In this paper, the high resolution three-dimensional ocean circulation model is adopted to reproduce the circulation in the northern SCS. The diagnostic analyses are performed to investigate the momentum budget in the northern SCS continental shelf/slope and the momentum propulsion of the SCSWC. It is indicated that the across-shelf pressure gradient and the across-shelf transport are responsible for the formation of the SCSWC, while the along-shelf pressure gradient is balanced by the surface stress, bottom stress, and Coriolis force. The magnitude of the terms in the along-shelf momentum equation is smaller than that in the across-shelf one. The analysis on the momentum budget in the northem SCS will benefit the marine environmental prediction in the future.