DOI: 10.1002/2017JC013403
Scopus记录号: 2-s2.0-85040743559
论文题名: Winter Counter-Wind Transport in the Inner Southwestern Yellow Sea
作者: Wu H. ; Gu J. ; Zhu P.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期: 1 起始页码: 411
结束页码: 436
语种: 英语
英文关键词: coastal current
; southwestern Yellow Sea
; tidal stress
; upshelf
Scopus关键词: coastal current
; downwelling
; Earth rotation
; experiment
; geostrophic flow
; Northern Hemisphere
; numerical method
; ocean wave
; sea surface
; tidal current
; tide
; transport process
; wave propagation
; wind forcing
; wind-driven current
; China
; East China Sea
; Pacific Ocean
; Yangtze Estuary
; Yellow Sea
英文摘要: Coastal currents generally flow downshelf with land on the right side (Northern Hemisphere) under the geostrophic balance, and are often strengthened by downwelling-favorable winds. However, the recent mooring observation in the inner southwestern Yellow Sea showed that coastal transport direction can be substantially changed by tidal forcing. In the survey, the tidal-averaged transports at two out of three sites remained northward (i.e., in the upshelf direction) and opposite the downwelling-favorable northerly wind, except during a brief neap tide period. Numerical experiments showed that the incoming Poincaré wave tide from the East China Sea plays a key role in forming this counter-wind transport system. This tidal wave produces a shoreward tidal stress south of 33.5°N in the inner southwestern Yellow Sea, driving an upshelf transport under the Earth's rotation. Counterpropagating tidal waves from the East China Sea and the northern Yellow Sea collide in coastal water in 32.5–34°N, which produce a standing tidal wave and therefore a mean sea-surface setup with alongshore and cross-shelf scales of both >100 km. This sea-surface setup causes an alongshore sea surface gradient, which veers the upshelf transport to the offshore direction under geostrophic balance. The strong tidal current increases the tidal-mean bottom resistance in the SCW, thus reduces the wind-driven current to a magnitude smaller than the tide-induced residual transport velocity. Therefore, upshelf transport persists in the inner southwestern Yellow Sea, and the Changjiang River Estuary becomes a major source area for the inner southwestern Yellow Sea. © 2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114845
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, China; School of Marine Sciences, East China Normal University, Shanghai, China
Recommended Citation:
Wu H.,Gu J.,Zhu P.. Winter Counter-Wind Transport in the Inner Southwestern Yellow Sea[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(1)