Layered mixing on the New England Shelf in summer

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

	Layered mixing on the New England Shelf in summer
	Wang, Jianing1,2 ; Greenan, Blair J. W.3; Lu, Youyu 3; Oakey, Neil S.3; Shaw, William J.4
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
	2014-09-01
卷号	119 期号:9 页码:5776-5796
关键词	turbulence diffusion mixing processes
通讯作者	Greenan, BJW (reprint author), Fisheries & Oceans Canada, Bedford Inst Oceanog, POB 1006, Dartmouth, NS B2Y 4A2, Canada.
英文摘要	The layered structure of stratification and mixing on the New England Shelf (NES) in summer is examined by analyzing a comprehensive set of observations of hydrography, currents and turbulence. A clear distinction in mixing characteristics between the midcolumn water (consisting of subsurface stratification, middepth weak stratification and lower-layer stratification) and a well-mixed bottom boundary layer (BBL) is revealed. The combination of subtidal Ekman onshore bottom transport and cross-shore density gradient created a lower-layer stratification that inhibited the upward extension of the BBL turbulence. The BBL mixing was related to strong shear generated by bottom stress, and the magnitude and periodic variation of BBL mixing was determined by both the tidal and subtidal flows. Mixing in the midcolumn water occurred under stably stratified conditions and showed correspondence with the occurrence of near-inertial and semidiurnal internal waves. Positive correlations between buoyancy frequency squared (N-2) and shear variance (S-2), S-2 and dissipation rate (epsilon), N-2 and epsilon are established in the midcolumn, but not in the BBL. The midcolumn epsilon was reasonably described by a slightly modified MacKinnon-Gregg (MG) model.
学科主题	Oceanography
收录类别	SCI
语种	英语
WOS记录号	WOS:000343879200012
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/23941]
专题	海洋研究所_海洋环流与波动重点实验室海洋研究所_实验海洋生物学重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Inst Oceanol, Qingdao, Peoples R China 2.Ocean Univ China, Coll Phys & Environm Oceanog, Lab Phys Oceanog, Qingdao, Peoples R China 3.Fisheries & Oceans Canada, Bedford Inst Oceanog, Dartmouth, NS B2Y 4A2, Canada 4.Naval Postgrad Sch, Dept Oceanog, Monterey, CA USA
推荐引用方式 GB/T 7714	Wang, Jianing,Greenan, Blair J. W.,Lu, Youyu,et al. Layered mixing on the New England Shelf in summer[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2014,119(9):5776-5796.
APA	Wang, Jianing,Greenan, Blair J. W.,Lu, Youyu,Oakey, Neil S.,&Shaw, William J..(2014).Layered mixing on the New England Shelf in summer.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,119(9),5776-5796.
MLA	Wang, Jianing,et al."Layered mixing on the New England Shelf in summer".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 119.9(2014):5776-5796.