文献类型：期刊文献

英文题名：Observation of Upper-Ocean Mixing in the Region West of the Luzon Strait in Spring

作者：Zhang, Shuwen[1];Xie, Lingling[1];Cao, Ruixue[1];Zhao, Hui[1]

机构：[1]Guangdong Ocean Univ, Coll Ocean & Meteorol, Key Lab Climate Resource & Environm Continental S, Huguangyan E 524088, Zhanjiang, Peoples R China

年份：2012

卷号：28

期号：5

起止页码：1208

外文期刊名：JOURNAL OF COASTAL RESEARCH

收录：SCI-EXPANDED(收录号：WOS:000308774400021)、、Scopus(收录号：2-s2.0-84866557825)、WOS

基金：We would like to thank two anonymous reviewers for their valuable suggestions to improve the manuscript. Thanks are also given to Dr. Zhiyu Liu for helpful discussion. The work was supported by National Science Foundation of China (grant no. 40876013, 41106012, 40906008, and U0933001), Guangdong University Pearl Rive Scholar Bonus Schemes (GDUPS) (2010), National Science Foundation of Guangdong (grant no. 925240880100001), and National High Technology Research and Development Program 863 (no. 2010AA09Z102).

语种：英文

外文关键词：Turbulent kinetic energy dissipation rate; enhanced mixing; Kuroshio; shear instability; South China Sea

外文摘要：The west Luzon Strait is a hot spot where water and energy exchange is strongly influenced by the westward intrusion of Kuroshio water. Shipboard observations carried out during spring 2010 quantify the upper-ocean mixing in the region west of the Luzon Strait. The observations indicate that strong turbulent mixing occurs in the upper 300 m near the Luzon Strait, where turbulent kinetic energy dissipation rates increase to magnitude of about O(10(-6) W kg(-1)) and turbulent eddy diffusivity reaches O(10(-2) m(2) s(-1)). This enhanced mixing is plausibly associated with shear instability of the Kuroshio intrusion. As important as the internal tides and wind forcing emphasized in the classical paradigm, our observation implies also that an unstable current such as the Kuroshio intrusion may be an energy source for enhanced ocean mixing. The dependency further shows that dissipation rates increase with increasing shear and decrease with increasing stratification in the observation region.