| 青岛-石岛近海反气旋中尺度涡旋存在证据及数值模拟 |
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| 引用本文： | 徐丹亚,赵保仁.青岛-石岛近海反气旋中尺度涡旋存在证据及数值模拟[J].海洋学报,1999,21(2):18-26. |
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| 作者姓名： | 徐丹亚 赵保仁 |
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| 作者单位： | 1.中国科学院南海海洋研究所, 广州 510301 |
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| 基金项目： | 山东省自然科学基金(Y95E0266) |
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| 摘 要： | 系统整理的历史实测海流和温盐资料显示出青岛-石岛近海水域全年都存在着中尺度反气旋式涡旋运动.利用二维数值模式,首次模拟出该涡旋的存在,并对这一涡旋的形成机制进行了探讨,数值模拟结果和实测吻合良好.数值计算表明:在冬季盛行风的作用下,山东半岛南岸出现减水,迫使北上的黄海暖流中的一部分向西北方向延伸,在到达山东半岛近海后向右转向,形成东北向沿岸流,这样,与绕过山东半岛大约沿40～50m等深线南下的黄海沿岸流作用,在青岛-石岛近海形成一个中尺度反气旋涡旋.夏季由于偏南风的作用,致使山东半岛南部近海浅水区域海水都向东北方向流动,与沿黄海冷水团锋面南下的黄海沿岸流相作用,由于流速切变也形成了上述涡旋.
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| 关 键 词： | 中尺度涡旋 数值模似 黄海暖流 黄海沿岸流 |
| 收稿时间： | 1997/11/20 0:00:00 |
| 修稿时间： | 1998/11/11 0:00:00 |
Existential proof and numerical study of a mesoscale anticyclonic eddy in the Qingdao-Shidao offshore |
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| Xu Danya and Zhao Baoren.Existential proof and numerical study of a mesoscale anticyclonic eddy in the Qingdao-Shidao offshore[J].Acta Oceanologica Sinica (in Chinese),1999,21(2):18-26. |
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| Authors: | Xu Danya and Zhao Baoren |
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| Affiliation: | 1.South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 5103012.Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071 |
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| Abstract: | Current measurement and traces of drift bottles and drift cards show existence of a mesoscale anticyclonic eddy in the Qingdao-Shidao offshore in a round year.A two dimensional numerical model is firstly employed to modelling this eddy phenomenon.In the model we consider the main factor which influences the circulation greatly as wind stress,real topography,volume transportation.baroclinic effect etc.It is show that an anticylonic eddy which exists in the area near the Qingdao-Shidao coast.The computational results agree well with the analysed results from observation.The distribution of salinity and temperature also shows the existence of the anticyclonic eddy.By analyse the Vortex Equation and the result of a series of numerical model tests.the reason why and how this eddy is formed is explained. |
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| Keywords: | Mesoscale anticyclonic eddy numerical modelling Huanghai Sea warm current Huanghai Sea costal current |
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