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

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	Effect of Langmuir circulation on upper ocean mixing in the South China Sea
	Li Shuang 1,2; Song Jinbao 1; Fan Wei 1
刊名	ACTA OCEANOLOGICA SINICA
	2013-03-01
卷号	32 期号:3 页码:28-33
关键词	Langmuir circulation upper ocean mixing wave breaking South China Sea
ISSN号	0253-505X
通讯作者	Li, S
中文摘要	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 6s. 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 0 (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.
英文摘要	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 6s. 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 0 (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.
学科主题	Oceanography
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Oceanography
研究领域[WOS]	Oceanography
关键词[WOS]	LARGE-EDDY SIMULATION ; MIXED-LAYER ; BOUNDARY-LAYER ; WAVE ; TURBULENCE ; MODEL ; WIND
收录类别	SCI
原文出处	10.1007/s13131-013-0285-5
语种	英语
WOS记录号	WOS:000316239100004
公开日期	2014-07-17
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/16404]
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, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 2.Zhejiang Univ, Dept Ocean Sci & Engn, Hangzhou 310058, Zhejiang, Peoples R China
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[J]. ACTA OCEANOLOGICA SINICA,2013,32(3):28-33.
APA	Li Shuang,Song Jinbao,&Fan Wei.(2013).Effect of Langmuir circulation on upper ocean mixing in the South China Sea.ACTA OCEANOLOGICA SINICA,32(3),28-33.
MLA	Li Shuang,et al."Effect of Langmuir circulation on upper ocean mixing in the South China Sea".ACTA OCEANOLOGICA SINICA 32.3(2013):28-33.