| 两层分层流体中初始内孤立波分裂的数值研究 |
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| 引用本文： | 徐肇廷,贾村,陈旭,文凡.两层分层流体中初始内孤立波分裂的数值研究[J].中国海洋大学学报(自然科学版),2006,36(3):345-348. |
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| 作者姓名： | 徐肇廷 贾村 陈旭 文凡 |
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| 作者单位： | 中国海洋大学物理海洋研究所物理海洋实验室,山东,青岛,266003 |
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| 基金项目： | 中国科学院资助项目;物理海洋教育部重点实验室基金 |
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| 摘 要： | 本文导得了1个研究内波分裂的射线型二维KdV方程。利用这一方程的一维退化方程进行了实验室尺度下孤立子型内波分裂的数值研究。数值结果表明,深水区的初始内孤立波和实测的内孤立波(内潮)在通过陆坡区时都会产生分裂,并在陆架上(浅水区)生成一内孤立子波列。这表明在实际海洋条件下,深海区内潮的分裂是陆架上海洋内孤立子波包(或波列)生成的主要机制之一。
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| 关 键 词： | 二维KdV方程 内潮 内孤立子 内孤立子波包 |
| 文章编号： | 1672-5174(2006)03-345-04 |
| 收稿时间： | 2005-12-13 |
| 修稿时间： | 2006-03-14 |
A Numerical Study of Fission of Internal Tides in a Two-Layer Stratified Fluid |
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| XU Zhao-Ting,JIA Cun,CHEN Xu,WEN Fan.A Numerical Study of Fission of Internal Tides in a Two-Layer Stratified Fluid[J].Periodical of Ocean University of China,2006,36(3):345-348. |
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| Authors: | XU Zhao-Ting JIA Cun CHEN Xu WEN Fan |
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| Institution: | Institute of Physical Oceanography and Physical OceanographyLaboratory, Ocean University of China, Qingdao 266003, China |
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| Abstract: | A ray-type 2D-KdV equation for studying the fission of internal waves is derived in the present paper. By using a reduced equation resulted from the 2D-KdV equation, a numerical calculation on the fission of soliton-type internal wave and a measured internal solitary wave (or internal tide) is carried out at the laboratory scale. From the numerical results, it is shown that the initial internal solitary wave and the measured internal solitary all can fission when they pass through the continental slope. It is concluded that the fission of the internal tides on the slope is one of the dominant generating mechanisms of internal soliton packets (or wave train) on the shelf under real ocean conditions. |
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| Keywords: | 2D-KdV equation internal tide internal soliton internal soliton packet |
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