A study on surface wave-induced mixing of transport flux residue and its application
- 作者：Yang YongzengZhang TiechengShi YongfangYin XunqiangSun Baonan
- 会议时间：2014-10-01
- 关键词：Surface wave-induced mixing ; Wave transport flux residue ; Decomposition scheme ; Upper mixed layer
- 作者单位：Yang Yongzeng,Yin Xunqiang(First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;Key Laboratory of Marine Science and Numerical Modeling, SOA, Qingdao, 266061, China)Zhang Tiecheng(First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;Ningbo University, Ningbo, 315211, China)Shi Yongfang(First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;Ocean University of China, Qingdao, 266003, China)Sun Baonan(First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China)
- 母体文献：第一届中国大地测量和地球物理学学术大会论文集
- 会议名称：第一届中国大地测量和地球物理学学术大会
- 会议地点：北京
- 主办单位：中国测绘学会
- 语种：chi
摘要
Ocean mixing and its reasonable parameterization are of significant importance for modeling of the mixed layers.In this article,the role on the surface wave-induced mixing of transport flux residue is studied tentatively.Based on the decomposition scheme for surface waves,perturbations generated by the background current shear are derived,and the vertical mixing of wave transport flux residue is expressed analytically as a function of wave-number spectrum.The coefficients of wave transport flux residue are estimated roughly from simulated water temperature. Near strong currents, they have the order of 10-2-10-1 s-1 at surface, and attenuate to the order of 10-2-10-3 s-1 at 50m depth. Comparisons with or without the role of wave transport flux residue are performed and analyzed. Temperature transects indicate that the vertical mixing of wave transport flux residue can deepen the 24oC isothermal line and agrees to observation well. Distributions of the upper mixed layer depth also indicate that the vertical mixing plays an important role for formation of the upper mixed layer near strong currents.