| A Lagrangian mean theory on coastal sea circulation with inter-tidal transports I. Fundamentals |
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| 作者姓名： | FENG Shizuo JU Lian JIANG Wensheng |
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| 作者单位： | Key Laboratory of Physical Oceanography of Ministry of Education,Institute of Physical Oceanography,Ocean University of China,Qingclao 266100,China |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，国家自然科学基金，the Program for New Century Excellent Talents in University of China |
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| 摘 要： | A brief review is made on the theory of the Lagrangian residual circulation and inter-tidal transports in a convectively weakly nonlinear system. In the review the emphasis is put on the systematical development of the theory and its weakness of convectively weakly nonlinear approximation. The fundamentals of a Lagrangian tidally-averaged theory on circulation with inter-tidal transport processes have been proposed for a general nonlinear coastal/estuarine system. The Lagrangian residual velocity is strictly de- fined, and it has been verified to be able to embody the velocity field of circulation. A new concept of the concentration for inter- tidal transport processes is presented. The concentration describing the inter-tidal transport processes should be a ＂Lagrangian inter-tidal concentration＂ defined and named, but not the Eulcrian tidally-averaged concentration used traditionally. The circulation described here contains a set of infinite temporal-spatial fields of velocity/concentration, each of which corresponds to a specific value of tidal phases varying continuously over one tidal cycle. When the convectively weakly nonlinear condition（ with a smaller order of eddy diffusion and sources） is approximately satisfied, a set of infinite temporal-spatial fields of velocity/concentration can be reduced to a single one.. the mass transport velocity/the Eulerian tidally averaged concentration as exhibited traditionally.
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| 关 键 词： | 拉格朗日余流 平均理论 运输机 海洋环流 基础 弱非线性系统 平均浓度 近岸 |
| 收稿时间： | 2007/7/31 0:00:00 |
| 修稿时间： | 2007/11/2 0:00:00 |
A Lagrangian mean theory on coastal sea circulation with inter-tidal transports I. Fundamentals |
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| FENG Shizuo,JU Lian,JIANG Wensheng.A Lagrangian mean theory on coastal sea circulation with inter-tidal transports I. Fundamentals[J].Acta Oceanologica Sinica,2008,27(6):1-16. |
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| Authors: | FENG Shizuo JU Lian and JIANG Wensheng |
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| Institution: | Key Laboratory of Physical Oceanography of Ministry of Education, Institute of Physical Oceanography, Ocean University of China, Qingdao 266100, China |
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| Abstract: | A brief review is made on the theory of the Lagrangian residual circulation and inter-tidal transports in a convectively weakly non-linear system.In the review the emphasis is put on the systematical development of the theory and its weakness of convectively weakly nonlinear approximation.The fundamentals of a Lagrangian tidally-averaged theory on circulation with inter-tidal transport processes have been proposed for a general nonlinear coastal/estuarine system.The Lagrangian residual velocity is strictly de-fined,and it has been verified to be able to embody the velocity field of circulation.A new concept of the concentration for inter-tidal transport processes is presented.The concentration describing the inter-tidal transport processes should be a "Lagrangian in-ter-tidal concentration" defined and named,but not the Eulerian tidally-averaged concentration used traditionally.The circulation described here contains a set of infinite temporal-spatial fields of velocity/concentration,each of which corresponds to a specific value of tidal phases varying continuously over one tidal cycle.When the convectively weakly nonlinear condition(with a smaller order of eddy diffusion and sources) is approximately satisfied,a set of infinite temporal-spatial fields of velocity/concentration can be reduced to a single one:the mass transport velocity/the Eulerian tidally averaged concentration as exhibited traditionally. |
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| Keywords: | nonlinear shallow waters tide-dominating system coastal water circulation Lagrangian residual velocity Lagrangian inter-tidsl concentration |
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