| Analysis of the high and low temperature centers and their relation with circulations in the East China Sea |
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| 作者姓名： | YANG Yongzeng QIAO Fangli XIA Changshui GE Renfeng |
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| 作者单位： | YANG Yongzeng,QIAO Fangli,XIA Changshui(First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;Key Laboratory of Marine Science and Numerical Modeling, SOA, Qingdao 266061, China);GE Renfeng(First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China)
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| 基金项目： | 国家自然科学基金，国家重点基础研究发展规划(973计划)，我国近海海洋综合调查与评价(908计划) |
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| 摘 要： | Three warm currents, the Kuroshio, its shelf intrusion branch in the northeast of Taiwan and the Taiwan Warm Current (hereafter TWC), dominate the circulation pattern in the East China Sea (hereafter ECS). Their origination, routes and variation in winter and summer are studied. Their relationship with four major high and low temperature centers is analyzed. Differing from the previous opinion, we suggest that the four major centers are generated to a great extent by the interaction of the currents in the ECS. In summer, a cold water belt in the northeast of Taiwan is preserved from winter between the Kuroshio and the TWC. The shelf intrusion branch of the Kuroshio separates the water belt, and two low temperature centers generate in the northeast of Taiwan. In the southern ECS, the TWC transports more heat flux northward to form a warm pool. But it is separated in the lower layer by the cold water driven by the intrusion branch of the Kuroshio. So the TWC and the intrusion branch of the Kuroshio play a dominating role to generate the high temperature center. The interaction among the eastward TWC, the northward Tsushima Warm Current (hereafter TSWC) and the southward Su Bei Coastal Flow (hereafter SBCF) generates the low temperature center in the northern ECS. In winter, the strengthening of the shelf intrusion branch of the Kuroshio obscures the two low temperature centers in the northeast of Taiwan. For the weakening of the TWC, the high temperature center in the southern ECS vanishes, and the low temperature center in the northern ECS shifts to south.
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| 关 键 词： | 低温中心 东中国海 海洋法 台湾暖流 环流 TWC 东北部 大陆架 |
| 收稿时间： | 2007/9/15 0:00:00 |
| 修稿时间： | 3/9/2008 12:00:00 AM |
Analysis of the high and low temperature centers and their relation with circulations in the East China Sea |
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| YANG Yongzeng,QIAO Fangli,XIA Changshui,GE Renfeng.Analysis of the high and low temperature centers and their relation with circulations in the East China Sea[J].Acta Oceanologica Sinica,2009,28(2):14-22. |
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| Authors: | YANG Yongzeng QIAO Fangli XIA Changshui and GE Renfeng |
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| Institution: | 1.First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;Key Laboratory of Marine Science and Numerical Modeling, SOA, Qingdao 266061, China2.First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China |
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| Abstract: | Three warm currents, the Kuroshio, its shelf intrusion branch in the northeast of Taiwan and the Taiwan Warm Current (hereafter TWC), dominate the circulation pattern in the East China Sea (hereafter ECS). Their origination, routes and variation in winter and summer are studied. Their relationship with four major high and low temperature centers is analyzed. Differing from the previous opinion, we suggest that the four major centers are generated to a great extent by the interaction of the currents in the ECS. In summer, a cold water belt in the northeast of Taiwan is preserved from winter between the Kuroshio and the TWC. The shelf intrusion branch of the Kuroshio separates the water belt, and two low temperature centers generate in the northeast of Taiwan. In the southern ECS, the TWC transports more heat flux northward to form a warm pool. But it is separated in the lower layer by the cold water driven by the intrusion branch of the Kuroshio. So the TWC and the intrusion branch of the Kuroshio play a dominating role to generate the high temperature center. The interaction among the eastward TWC, the northward Tsushima Warm Current (hereafter TSWC) and the southward Su Bei Coastal Flow (hereafter SBCF) generates the low temperature center in the northern ECS. In winter, the strengthening of the shelf intrusion branch of the Kuroshio obscures the two low temperature centers in the northeast of Taiwan. For the weakening of the TWC, the high temperature center in the southern ECS vanishes, and the low temperature center in the northern ECS shifts to south. |
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| Keywords: | East China Sea circulation Kuroshio Taiwan Warm Current temperature |
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