Tide-Induced Mixing in the Bottom Boundary Layer in the Western East China Sea

IOCAS-IR

	Tide-Induced Mixing in the Bottom Boundary Layer in the Western East China Sea
	GUO Zheng ; CAO Anzhou ; WANG Jianfeng
发表期刊	Journal of Ocean University of China
ISSN	1672-5182
	2023-02-06
出版年	2023
卷号	v.22 期号:01 页码:6-13
文献类型	CNKI期刊论文
摘要	The East China Sea (ECS) boasts a vast continental shelf,where strong tidal motions play an important role in the substance transport and energy budget.In this study,the tide-induced mixing in the bottom boundary layer in the western ECS is analyzed based on records measured by moored acoustic Doppler current profilers from June to October 2014.Results show that the M_2 tide is strong and shows a barotropic feature,whereas the O_1 tide is much weaker.Based on the M_2 tidal currents,the eddy viscosity in the bottom Ekman boundary layer is estimated with three schemes.The estimated eddy viscosity values vary within 10~(-4)–10~(-2) m~2 s~(-1),reaching a maximum at approximately 5 m height from the bottom and decreasing exponentially with the height at all three stations.Moreover,the shear production of turbulent kinetic energy is calculated to quantify the mixing induced by different tidal constituents.The results show that the shear production of the M_2 tide is much stronger than that of the O_1 tide and shows a bottom intensified feature.
关键词	tides East China Sea bottom boundary layer mixing eddy viscosity
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A010;
CNKI专题名称	海洋学;
分类号	P731.23
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	supported by the Zhejiang Provincial Natural Science Foundation of China (No. LY21D060005) ; the Shandong Provincial Natural Science Foundation (No. ZR2022MD082) ; the Joint Project of Zhoushan Municipality and Zhejiang University (No. 2019C810060) ; the Open Fund Project of Key Laboratory of Marine Environmental Information Technology ; the Strategic Priority Research Program of Chinese Academy of Sciences (No. XDA19060201)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/187195
专题	中国科学院海洋研究所
作者单位	1.MarineScienceandTechnologyCollege,ZhejiangOceanUniversity 2.OceanCollege,ZhejiangUniversity 3.InstituteofOceanology,ChineseAcademyofSciences 4.CenterforOceanMega-Science,ChineseAcademyofSciences
推荐引用方式 GB/T 7714	GUO Zheng,CAO Anzhou,WANG Jianfeng. Tide-Induced Mixing in the Bottom Boundary Layer in the Western East China Sea. 2023.