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| 东韩暖流驱动机制的正压数值研究 |
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王凯1, 鲁英宰2, 方国洪1
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1.中国科学院海洋研究所;2.韩国忠南大学校海洋系
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| 摘要: |
| 本文基于POM(Princeton Ocean Model)建立起日本海环流的数值模式。通过几个在有入(出)流情况下的正压变水深数值实验，检验了地形对日本海环流的影响。结果表明地形是控制日本海环流的重要因子。对马暖流在日本近岸的分支较多地受到地形的影响，这与前人的结论相一致。本文的研究发现在真实地形下，东韩暖流在正压情况下却很难由行星β效应维持。因此，层化效应是形成东韩暖流的必要因素。 |
| 关键词: 东韩暖流、驱动机制、正压数值 |
| DOI： |
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| 基金项目:中国科学院海洋研究所调查研究报告第3479号。 |
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| BAROTROPIC NUMERICAL STUDIES ON THE DRIVING MECHANISMS OF THE EAST KOREAN WARM CURRENT |
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Wang Kai1, Lo Young Jae2, Fang Guohong1
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1.Institute of Oceanology, Chinese Academy of Sciences;2.Dept. of Oceanography, Chungnam National University, Korea
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| Abstract: |
| The circulation of the Japan/East Sea (hereafter JES) is a central problem of physical oceanography. Uda (1934) gave the first schematic surface current chart for this area. Moriyasu (1972) summarized the general hydrographic features of the JES. Yoon (1982 a-c) and Kawabe (1982 a,b) pioneered research on the JES circulation was focused on the path of the Tsushima Current. After then, many numerical simulations of the JES circulation were reported.
The formation of the East Korean Warm current (EKWC) is one of the most important problem in the JES circulation Some early investigators (Yon, 1982a; Kawabe, 1982b; Kang, 1988; etc.) suggested that the EKWC is a western boundary current induced the planetary β-effect. Their results showed the EKWC is a permanent current. It is very strange that the EKWC did not appear at all in 1981 (Kim and Legeckis,1986). So it is necessary to study further the driving force of the EKWC.
In this study, a Princeton Ocean Model (known as POM97) was employed to simulate the circulation in the JES. The open boundary inflow and outflow conditions with realistic water depth in the numerical model are first set. Then, several experiments with artificial topography were made to test how the topography affects the circulation pattern in the JES. |
| Key words: East Korean Warm current (EKWC),driving mechanisms |
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