计算物理 ›› 2006, Vol. 23 ›› Issue (6): 731-737.

• 论文 • 上一篇    下一篇

渤黄东海底摩擦系数数值研究

张继才1, 祝建国1,2, 吕咸青1   

  1. 1. 中国海洋大学物理海洋实验室, 山东 青岛 266003;
    2. 东海舰队司令部航保处, 浙江 宁波 315122
  • 收稿日期:2005-05-30 修回日期:2005-11-14 出版日期:2006-11-25 发布日期:2006-11-25
  • 作者简介:张继才(1981-),Male,Laiwu,Shandong,PhD Candidate,Data Assimilation,Laboratory of Physical Oceanography,Ocean University of China,Qingdao 266003.
  • 基金资助:
    the National Basic Research Programof China(2005CB422308);the specialized research fund for the doctoral program of higher education(20050423007);the Foundation for Open Projects of the Key Lab of MOE for Physical Oceanography(200305)

Numerical Study on the Bottom Friction Coefficient of the Bohai,Yellow and East China Seas

ZHANG Ji-cai1, ZHU Jian-guo1,2, Lü Xian-qing1   

  1. 1. Laboratory of Physical Oceanography, Ocean University of China, Qingdao 266003, China;
    2. Navigation Guarantee Bureau of Headquarters, the East China Sea Fleet of Navy, Ningbo 315122, China
  • Received:2005-05-30 Revised:2005-11-14 Online:2006-11-25 Published:2006-11-25
  • Supported by:
    the National Basic Research Programof China(2005CB422308);the specialized research fund for the doctoral program of higher education(20050423007);the Foundation for Open Projects of the Key Lab of MOE for Physical Oceanography(200305)

摘要: 使用伴随同化方法探讨了四种底摩擦系数处理方法并模拟了渤黄东海的M2分潮.理想实验表明:伴随同化方法有很强的反演底摩擦系数的能力;为了得到较好的反演结果,反演策略必须与给定的分布一致;如果给定分布很复杂,则需要复杂的反演策略.实际实验表明,底摩擦效应与地形密切相关,而海洋地形十分复杂,故需要较多的独立的底摩擦系数才能得到较好的模拟结果.本文的第四种方法将每一点均作为独立的底摩擦系数,在实验中获得了成功,验证了这种方法的合理性和有效性.

关键词: 底摩擦系数, 潮汐模型, 伴随同化方法, 反演

Abstract: Based on the simulation of the M2 tide in the Bohai,Yellow and East China Seas,numerical experiments are made to study 4 strategies on the bottom friction coefficient(BFC) in a numerical adjoint model.In order to make a better simulation,the strategy must be consistent with the given BFC distribution.The real bottom friction decided by ocean topography is very complicated and an independent BFC is required.The fourth method which takes the BFC in each grid point as an independent BFC simulates practical experiments best and demonstrates the reasonability and efficiency of this method.

Key words: bottom friction coefficient, tidal model, adjoint assimilation method, inversion

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