中文摘要：

本文利用涡分辨率的HYCOM模式，以NCEP月平均再分析资料（1979--1993）为驱动场，并采用单向数值嵌套的方式对黑潮流域进行数值模拟，成功模拟了黑潮流域的高分辨率流场特征。模拟结果显示：黑潮路径符合前人对黑潮的认识；在地形和流量的共同作用下，黑潮对吕宋海峡的入侵呈现多平衡态的特征；日本以南的黑潮路径发生多种时间尺度的摆动（从季节内到年际）。黑潮在PN断面上流速跟同期观测十分相符，流轴集中在陆架破折处，季节变化较弱。台湾岛以东黑潮，东海黑潮以及吐噶喇海峡黑潮的流量符合对应时期观测，并且各自呈现出不同的变化特点。

英文摘要：

A Hybrid Coordinate Ocean Model （HYCOM） is used to simulate the current field of the Northwestern Pacific. This eddy resolution model is forced by NCEP monthly reanalysis dataset （1979-1993）. The downscaling method is applied and the output of a global ocean experiment is nested into the Northwest Pacific Ocean experiment. The result of Northwest Pacific regional model shows the typical characteristic of Kuroshio Current. We also find that： the interplay of Kuroshio with Luzon strait reveals the multiple equilibrium which is influenced by topography and beta effect. There are several types of Kuroshio＇s meander South of Japan whose time scales are apparently different （from seasonal to interannual）. In addition to the stability of Kuroshio at PN section （East China Sea）, its velocity structure agrees with corresponding observations. The volume transport of Kuroshio at East Taiwan, East China Sea and Tukara Strait accord with the observation although they are distinctive.