Effect of Langmuir circulation on upper ocean mixing in the South China Sea

IOCAS-IR

	Effect of Langmuir circulation on upper ocean mixing in the South China Sea
	LI Shuang; SONG Jinbao ; FAN Wei
发表期刊	Acta Oceanologica Sinica
ISSN	0253-505X
	2013-03-15
出版年	2013
卷号	v.32 期号:03 页码:30-35
文献类型	CNKI期刊论文
摘要	Effect of Langmuir circulation(LC) on upper ocean mixing is investigated by a two-way wave-current coupled model.The model is coupled of the ocean circulation model ROMS(regional ocean modeling system) to the surface wave model SWAN(simulating waves nearshore) via the model-coupling toolkit.The LC already certified its importance by many one-dimensional(1D) research and mechanism analysis work.This work focuses on inducing LC's effect in a three-dimensional(3-D) model and applying it to real field modeling.In ROMS,the Mellor-Yamada turbulence closure mixing scheme is modified by including LC's effect.The SWAN imports bathymetry,free surface and current information from the ROMS while exports significant wave parameters to the ROMS for Stokes wave computing every 6 s.This coupled model is applied to the South China Sea(SCS) during September 2008 cruise.The results show that LC increasing turbulence and deepening mixed layer depth(MLD) at order of O(10 m) in most of the areas,especially in the north part of SCS where most of our measurements operated.The coupled model further includes wave breaking which will brings more energy into water.When LC works together with wave breaking,more energy is transferred into deep layer and accelerates the MLD deepening.In the north part of the SCS,their effects are more obvious.This is consistent with big wind event in the area of the Zhujiang River Delta.The shallow water depth as another reason makes them easy to influence the ocean mixing as well.
关键词	Langmuir circulation,upper ocean mixing,wave breaking,South China Sea
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	P731.2
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	the National Basic Research Program of China under contract Nos 2011CB403501 and 2012CB417402 ; the Open Research Foundation for the State Key Laboratory of Satellite Ocean Environment Dynamics,Second Institute of Oceanography,State Oceanic Administration under contract No. SOED1210 ; the Fund for Creative Research Groups by NSFC under contract No. 41121064
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/190941
专题	中国科学院海洋研究所
作者单位	1.KeyLaboratoryofOceanCirculationandWaves,InstituteofOceanology,ChineseAcademyofSciences 2.DepartmentofOceanScienceandEngineering,ZhejiangUniversity
推荐引用方式 GB/T 7714	LI Shuang,SONG Jinbao,FAN Wei. Effect of Langmuir circulation on upper ocean mixing in the South China Sea. 2013.