초록

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Abstract ▼ AI-Helper

The separation mechanism of the Tsushima Warm Current and the effects of seasonal wind stress on the separation position are studied by use of a barotropic numerical model. The grid spacing of 0.25$^{\circ}$ both in latitude and longitude is used in the model, and Hellerman and Rosenstein...

The separation mechanism of the Tsushima Warm Current and the effects of seasonal wind stress on the separation position are studied by use of a barotropic numerical model. The grid spacing of 0.25$^{\circ}$ both in latitude and longitude is used in the model, and Hellerman and Rosenstein's wind (1983) is applied to the sea surface as seasonal wind stress. According to the model results, during winter seasons (from October to March) when northly wind is prevailing, the Tsushima Warm Current is formed by direct separation from the Kuroshio on the continental slope southwest of Kyushu. On the other hand, during summer seasons (from April to September), the Taiwan Current that flows through the Taiwan Strait seems to be the origin of the Tsushima Warm Current. The Kuroshio reaches its maximum transport during winter seasons, and the minimum during summer. The transport of the Taiwan Current shows a phase lag of about 160$^{\circ}$ relative to the Kuroshio. The transport variation of the Tsushima Warm Current agrees with that of the Kuroshio when the former is shifted by 120$^{\circ}$(about 4 months).