CYCLONIC RECIRCULATION ON THE LEFT SIDE OF THE KUROSHIO IN THE EAST CHINA SEA

• 作 者: Bai Xue-zhi BAI Hong Hu Dun-xin Wang Fan
• 机 构: Institute of Oceanology, Chinese Acedemy of Sciences;Key Laboratory of Marine Science and Numerical
• 出 处: 水动力学研究与进展B辑
• 发表日期: 2001年3期
• 关键词: the East China Sea Princeton Ocean model Taiwan Warm Current seasonal variation

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 ts 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 rets 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.