Wave breaking on turbulent energy budget in the ocean surface mixed layer
文献类型：期刊论文
| 作者 | Sun Qun1; Guan Changlong2; Song Jinbao1 |
| 刊名 | CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| 出版日期 | 2008-02-01 |
| 卷号 | 26期号:1页码:9-13 |
| 关键词 | Wave Breaking Ocean Surface Mixed Layer Turbulent Energy Budget |
| ISSN号 | 0254-4059 |
| DOI | 10.1007/s00343-008-0009-4 |
| 文献子类 | Article |
| 英文摘要 | As an important physical process at the air-sea interface, wave movement and breaking have a significant effect on the ocean surface mixed layer (OSML). When breaking waves occur at the ocean surface, turbulent kinetic energy (TKE) is input downwards, and a sublayer is formed near the surface and turbulence vertical mixing is intensively enhanced. A one-dimensional ocean model including the Mellor-Yamada level 2.5 turbulence closure equations was employed in our research on variations in turbulent energy budget within OSML. The influence of wave breaking could be introduced into the model by modifying an existing surface boundary condition of the TKE equation and specifying its input. The vertical diffusion and dissipation of TKE were effectively enhanced in the sublayer when wave breaking was considered. Turbulent energy dissipated in the sublayer was about 92.0% of the total depth-integrated dissipated TKE, which is twice higher than that of non-wave breaking. The shear production of TKE decreased by 3.5% because the mean flow fields tended to be uniform due to wave-enhanced turbulent mixing. As a result, a new local equilibrium between diffusion and dissipation of TKE was reached in the wave-enhanced layer. Below the sublayer, the local equilibrium between shear production and dissipation of TKE agreed with the conclusion drawn from the classical law-of-the-wall (Craig and Banner, 1994).; As an important physical process at the air-sea interface, wave movement and breaking have a significant effect on the ocean surface mixed layer (OSML). When breaking waves occur at the ocean surface, turbulent kinetic energy (TKE) is input downwards, and a sublayer is formed near the surface and turbulence vertical mixing is intensively enhanced. A one-dimensional ocean model including the Mellor-Yamada level 2.5 turbulence closure equations was employed in our research on variations in turbulent energy budget within OSML. The influence of wave breaking could be introduced into the model by modifying an existing surface boundary condition of the TKE equation and specifying its input. The vertical diffusion and dissipation of TKE were effectively enhanced in the sublayer when wave breaking was considered. Turbulent energy dissipated in the sublayer was about 92.0% of the total depth-integrated dissipated TKE, which is twice higher than that of non-wave breaking. The shear production of TKE decreased by 3.5% because the mean flow fields tended to be uniform due to wave-enhanced turbulent mixing. As a result, a new local equilibrium between diffusion and dissipation of TKE was reached in the wave-enhanced layer. Below the sublayer, the local equilibrium between shear production and dissipation of TKE agreed with the conclusion drawn from the classical law-of-the-wall (Craig and Banner, 1994). |
| 学科主题 | Limnology ; Oceanography |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000255743900002 |
| 公开日期 | 2010-12-24 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/5231]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Ocean Univ China, Phys Oceanog Lab, Qingdao 266003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun Qun,Guan Changlong,Song Jinbao. Wave breaking on turbulent energy budget in the ocean surface mixed layer[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2008,26(1):9-13. |
| APA | Sun Qun,Guan Changlong,&Song Jinbao.(2008).Wave breaking on turbulent energy budget in the ocean surface mixed layer.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,26(1),9-13. |
| MLA | Sun Qun,et al."Wave breaking on turbulent energy budget in the ocean surface mixed layer".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 26.1(2008):9-13. |
入库方式： OAI收割
来源：海洋研究所
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