摘要
Based on Princeton Ocean model, circulation in the Yellow Sea and East China Sea and its annual cycle are simulated. The model results show a weak countercurrent on the left side of the Kuroshio. The countercurrent separates from the main stream of the Kuroshio around 30°N, 128°E, where the Kuroshio turns right to the Tokara Strait it flows southwestward along isobaths, meets with the offshore branch of Taiwan Warm Current around 28°N. 124°E, then returns back and joins the main stream, so that a cyclonic circulation is formed. The center and strength of the countercurrent and cyclonic circulation exhibits seasonal variation. The lower layer cold water observed on PN section of the East China Sea in summer and autumn is considered to be associated with the modeled cyclonic circulation. According to Rossby's wake-stream theory, lateral friction may be the main mechanism of the countercurrent on the left side of the Kuroshio.
Based on Princeton Ocean model, circulation in the Yellow Sea and East China Sea and its annual cycle are simulated. The model results show a weak countercurrent on the left side of the Kuroshio. The countercurrent separates from the main stream of the Kuroshio around 30°N, 128°E, where the Kuroshio turns right to the Tokara Strait it flows southwestward along isobaths, meets with the offshore branch of Taiwan Warm Current around 28°N. 124°E, then returns back and joins the main stream, so that a cyclonic circulation is formed. The center and strength of the countercurrent and cyclonic circulation exhibits seasonal variation. The lower layer cold water observed on PN section of the East China Sea in summer and autumn is considered to be associated with the modeled cyclonic circulation. According to Rossby's wake-stream theory, lateral friction may be the main mechanism of the countercurrent on the left side of the Kuroshio.
基金
NationalKeyProgrammeforDevelopingBasicSciences (No:G1 9990 4 3 80 3 )andCASInnovationProject(No:KZCX2 2 0 7)
