| 沿岸上升流和沿岸急流的一个半解析理论 |
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| 引用本文： | 巢纪平,陈显尧.沿岸上升流和沿岸急流的一个半解析理论[J].地球物理学报,2003,46(1):26-30. |
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| 作者姓名： | 巢纪平 陈显尧 |
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| 作者单位： | 1.国家海洋局第一海洋研究所，青岛〓266061,2 中国科学院海洋研究所，国家海洋局海洋环境科学和数值模拟重点实验室，青岛〓266071 |
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| 基金项目： | 国家重点基础研究规划项目 (G1 9990 4 380 9)，国家自然科学基金项目 (497360 1 9)，国家海洋局青年海洋科学基金项目 (2 0 0 0 2 0 6) . |
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| 摘 要： | 在考虑了陆架地形后，在垂直海岸的x z剖面上 ，对Boussinesq流体的非线性海洋运动方程求得了总动量守恒、温度守恒和位势涡度守恒的 普 适形式，进而得到流函数所满足的椭圆型二阶偏微分方程，在给定流体沿地形运动的条件下 ，算出问题的解. 计算结果表明，沿岸可以出现上升流也可以出现下沉流，它依赖于海洋的 大尺度背景条件. 计算所得的上升流、沿岸急流、温度的锋区结构与一些观测事实接近.
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| 关 键 词： | 动量、温度、位势涡度守恒 上升、下沉流和急流 非线性 解析理论 |
| 文章编号： | 0001-5733(2003)01-26-05 |
| 收稿时间： | 2001-6-28 |
| 修稿时间： | 2002-7-20 |
A SEMI-ANALYTICAL THEORY OF COASTAL UPWELLING AND JET |
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| CHAO JIPING.A SEMI-ANALYTICAL THEORY OF COASTAL UPWELLING AND JET[J].Chinese Journal of Geophysics,2003,46(1):26-30. |
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| Authors: | CHAO JIPING |
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| Institution: | 1.First Institute of Oceanography, SOA, Qingdao 266061,China2 Institute of Oceanology, Chinese Academy of Sciences, Key Laboratory of Ma rine Science and Numerical Modeling, SOA, Qingdao 266071, China |
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| Abstract: | The general forms of the conservation of momentum, temperature and potential vorticity of coastal ocean are obtained in the x-z plane for the nonlinear ocean circulation of Boussinesq fluid, and a elliptic type partial differential equations of second order are derived. Solution of the partial differential equations are obtained under the conditions that the fluid moves along the topography. The numerical results show that there exist both upwelling and downwelling along coastline that mainly depends on the large scale ocean condition. Numerically results of the upwelling (downwelling), coastal jet and temperature front zone are favorable to the observations. |
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| Keywords: | Conservation of momentum temperature and potential vorticity Upwelling downwelling and coastal jet Nonlinear analytical theory |
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