对马暖流生成机制的数值模拟

NUMERICAL SIMULATION OF THE FORMATION MECHANISM OF THE TSUSHIMA CURRENT

本文通过二维数值模拟对对马暖流的生成进行了初步的探讨。模拟结果得出黑潮、对马暖流主要是地转性质的。其形成主要受地形效应的影响。黑潮基本上沿500m等深线流动。对马暖流为在黑潮主干西侧沿100～200m等深线流动的一支海流与黄海大陆沿岸流的混合。另外,在这支上面提到的海流路径上31°N附近有时会出现逆流,这主要受对马暖流流入朝鲜海峡的流量大小控制。出现逆流的现象在最近黑潮调查中也曾被观测到。

The mechanism of the formation of the Tsushima Current has been primarily studied by using a two dimensional numerical model. Results show that both the Kuroshio and Tsushima Currents are geostrophical. Their formations are essentialy influenced by topographic effect. The Kuroshio flows basically along the 500m isobath. The Tsushima is a mixture of the current flowing along the 100-200m isobath on the west side of the Kuroshio and the coastal current in the Yellow Sea. sometimes a countercurrent appears on the path of the above mentioned current near 31°N, which is mainly controled by the flow of the Tsushima Current passing through the Korea Strait. This eountercurrent has been observed by recent Kuroshio investigations.