| Study on numerical simulation and dynamic mechanism of winter- time circulation in the eastern China seas |
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| 作者姓名： | 韩冬 侯一筠 魏泽勋 刘兴泉 赵喜喜 |
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| 作者单位： | [1]InstituteofOceanology,ChineseAcademyofSciences,Qingdao266071,China [2]GraduateSchooloftheChineseAcademyofSciences,Beijing100039,China [3]FirstInstituteofOceanography,StateOceanicAdministration,Qingdao266061,China |
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| 基金项目： | This study was supported by the Major State Basi(No.G1999043808)，Youth Fund of the National 863 Project(No.G2002AA639350) and the Scientific Foundation of the Chinese |
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| 摘 要： | An MOM2 based 3-dimentional prognostic baroclinic Z-ordinate model was established to study the circulation in eastern China seas, considering the topography, inflow and outflow on the open boundary, wind stress, temperature and salinity exchange on the sea surface. The results were consistent with observation and showed that the Kuroshio intrudes in large scale into the East China Sea continental shelf East China, during which its water is exchanged ceaselessly with outer sea water along Ryukyu Island. The Tsushima Warm Current is derived from several sources, a branch of the Kuroshio, part of the Taiwan Warm Current, and Yellow Sea mixed water coming from the west of Cheju Island. The water from the west of Cheju Island contributes approximately 13% of the Isushima Warm Current total transport through the Korea Strait. The circulation in the Bohai Sea and Yellow Sea is basically cyclonic circulation, and is comprised of coastal currents and the Yellow Sea Warm Current. Besides simulation of the real circulation, numerical experiments were conducted to study the dynamic mechanism. The numerical experiments indicated that wind directly drives the East China Sea and Yellow Sea Coastal Currents, and strengthens the Korea Coastal Current and Yellow Sea Warm Current. In the no wind case, the kinetic energy of the coastal current area and main YSWC area is only 1% of that of the wind case.Numerical experiments also showed that the Tsushima Warm Current is of great importance to the formation of the Korea Coastal Current and Yellow Sea Warm Current.
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| 关 键 词： | 中国东部海域 冬季 正压循环 MOM2 数字化仿真 动力机械 |
| 收稿时间： | 16 May 2003 |
| 修稿时间： | 20 July 2003 |
Study on numerical simulation and dynamic mechanism of winter-time circulation in the eastern China seas |
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| Han?Dong,Hou?YijunEmail author,Wei?Zexun,Liu?Xingquan,Zhao?Xixi.Study on numerical simulation and dynamic mechanism of winter- time circulation in the eastern China seas[J].Chinese Journal of Oceanology and Limnology,2004,22(4):327-334. |
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| Authors: | Han?Dong Email author" target="_blank">Hou?YijunEmail author Wei?Zexun Liu?Xingquan Zhao?Xixi |
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| Institution: | (1) Institute of Oceanology, Chinese Academy of Sciences, 266071 Qingdao, China;(2) Graduate School of the Chinese Academy of Sciences, 100039 Beijing, China;(3) First Institute of Oceanography, State Oceanic Administration, 266061 Qingdao, China |
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| Abstract: | An MOM2 based 3-dimentional prognostic baroclinic Z-ordinate model was established to study the circulation in eastern China seas, considering the topography, inflow and outflow on the open boundary, wind stress, temperature and salinity exchange on the sea surface. The results were consistent with observation and showed that the Kuroshio intrudes in large scale into the East China Sea continental shelf East China, during which its water is exchanged ceaselessly with outer sea water along Ryukyu Island. The Tsushima Warm Current is derived from several sources, a branch of the Kuroshio, part of the Taiwan Warm Current, and Yellow Sea mixed water coming from the west of Cheju Island. The water from the west of Cheju Island contributes ap-proximately 13% of the Isushima Warm Current total transport through the Korea Strait. The circulation in the Bohai Sea and Yellow Sea is basically cyclonic circulation, and is comprised of coastal currents and the Yellow Sea Warm Current. Besides simulation of the real circulation, numerical experiments were conducted to study the dynamic mechanism. The numerical experiments indicated that wind directly drives the East China Sea and Yellow Sea Coastal Currents, and strengthens the Korea Coastal Current and Yellow Sea Warm Current. In the no wind case, the kinetic energy of the coastal current area and main YSWC area is only 1% of that of the wind case. Numerical experiments also showed that the Tsushima Warm Current is of great importance to the formation of the Korea Coastal Current and Yellow Sea Warm Current. |
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| Keywords: | eastern China seas wintertime circulation MOM2 numerical simulation dynamic mechanism |
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