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Observation of small-scale processes over shelf break in the East China Sea
The turbulent dissipation along with temperature and salinity was measured on board R/V Dong Fang Hong 2 over the shelf break of the East China Sea from March 7 to 9, 2004. Applying the Turner angle, it is found that the 'diffusive' double diffusion, salt-fingering, and stable stratification coexist in the upper water column of about 50 m. Below that depth, there exists weak salt-fingering. The turbulent dissipation rates are enhanced along the ray paths of M2 internal tides emanating from the shelf break with values ranging from 1.0×10-9 W·kg-1 to 1.2×10-6 W·kg-1. The corresponding diapycnal mixing rates are from 1×10-6 m2·s-1 to 1×10-2 m2·s-1. The spatially averaged mixing rate over the whole observation section is 2.3×10-3 m2·s-1, which is much larger than 1×10-5 m2·s-1 of the background diapycnal mixing rate in the open ocean.
作 者： ZHOU Lei TIAN Jiwei ZHANG Xiaoqian 作者单位： Physical Oceanography Laboratory, Ocean University of China, Qingdao 266003, China 刊 名： 科学通报（英文版） SCI 英文刊名： CHINESE SCIENCE BULLETIN 年，卷(期)： 2005 50(24) 分类号： P7 关键词： Diapycnal mixing double diffusivity small-scale process shelf break East China Sea【Observation of small-scale processes】相关文章：
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