Seasonal and Spatial Variations of the M-2 Internal Tide in the Yellow Sea

doi:10.1029/2018JC014819

	Seasonal and Spatial Variations of the M-2 Internal Tide in the Yellow Sea
	Liu, Kun 1,2; Sun, Junchuan 1,2; Guo, Chuncheng 3; Yang, Yang 2,4; Yu, Weidong 2,4; Wei, Zexun 1,2
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
	2019-02
卷号	124 期号:2 页码:1115-1138
关键词	internal tides seasonal variation Yellow Sea mixing
ISSN号	2169-9275
DOI	10.1029/2018JC014819
英文摘要	The seasonality of internal tides is particularly conspicuous in shelf seas due to the dramatical variations in the marine environment. In this paper, the seasonal and spatial variabilities of M-2 internal tides in the Yellow Sea (YS) are investigated using a high-resolution numerical ocean model. The freshwater runoff of the Yangtze River is also considered. Because most nonlinear internal waves are of tidal origin, the simulated internal tides show good spatial consistency with the satellite-detected nonlinear internal waves. During summer, the M-2 internal tides are ubiquitous and originate from multiple generation sites (e.g., the west coast of the Korean Peninsula and the Yangtze River estuary). During other seasons, the spatial coverage of the internal tides becomes very limited. Multiple sources combined with seasonal onset and decay lead to complex seasonal interference patterns. The wavelengths vary both spatially and temporally, depending on the water depth and ocean stratification. Between spring and autumn, a seasonally reversed pattern of radiation of baroclinic energy flux is found in the southern YS, which may be induced by the seasonal variability of the YS Warm Current. Seasonal stratification controls the seasonality of the generation, propagation, and dissipation of internal tides and is maintained by the monsoon, seasonal circulation, and Yangtze River runoff. Our simulations suggest that, although internal tide dissipation is dispensable for the tidal energy budgets in the YS, internal tides seem to be the leading order contributor to the midcolumn diapycnal mixing, as they are more efficient mixers than barotropic tides.
资助项目	National Natural Science Foundation of China[41606040] ; National Natural Science Foundation of China[41706033] ; National Natural Science Foundation of China[41606036]
WOS关键词	EAST CHINA SEAS ; SOLITARY WAVES ; DEEP-OCEAN ; SHELF ; DISSIPATION ; MODELS
WOS研究方向	Oceanography
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000461856400018
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/24820]
专题	自然资源部第一海洋研究所
通讯作者	Wei, Zexun
作者单位	1.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Sci & Numer Modeling, Qingdao, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao, Peoples R China 3.NORCE Norwegian Res Ctr, Bjerknes Ctr Climate Res, Bergen, Norway 4.Minist Nat Resources, Inst Oceanog 1, Ctr Ocean & Climate Res, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Liu, Kun,Sun, Junchuan,Guo, Chuncheng,et al. Seasonal and Spatial Variations of the M-2 Internal Tide in the Yellow Sea[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2019,124(2):1115-1138.
APA	Liu, Kun,Sun, Junchuan,Guo, Chuncheng,Yang, Yang,Yu, Weidong,&Wei, Zexun.(2019).Seasonal and Spatial Variations of the M-2 Internal Tide in the Yellow Sea.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,124(2),1115-1138.
MLA	Liu, Kun,et al."Seasonal and Spatial Variations of the M-2 Internal Tide in the Yellow Sea".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 124.2(2019):1115-1138.