NDLI: Numerical study of the tides and residual currents in the Qiongzhou Strait

Content Provider	Springer Nature Link
Author	Chen, Changlin Li, Peiliang Shi, Maochong Zuo, Juncheng Chen, Meixiang Sun, Haiping
Copyright Year	2009
Abstract	Based on the three-dimensional ECOM model, the tide, tide-induced residual current, wind-driven and density currents in the Beibu (Tonkin) Gulf and Qiongzhou Strait are diagnostically computed in fine grid. The tides and tidal currents in the Beibu Gulf and Qiongzhou Strait are well reproduced. The model results show that the semidiurnal tidal wave propagates eastward from the Beibu Gulf through Qiongzhou Strait, while diurnal tidal waves enter the strait from both the eastern and western sides and interact on the southeast coast of the strait. The formation processes of the residual currents in Qiongzhou Strait in summer (August) and winter (January) are mainly discussed. It is shown that the total residual currents (coupling effect of wind, tide and density) in the strait are westward in both summer and winter. The water volume transported from the east to west into the Beibu Gulf is 0.026 Sv in summer and 0.116 Sv in winter. Numerical experiments indicate that the dominant factor affecting the residual currents in the strait is not the wind stress but the tidal rectification. The westward tide-induced residual current, driven by the tidal rectification, is rather strong in the strait with water volume transport of 0.063 Sv. The wind in summer only reduces the westward tide-induced residual current to a certain extent, and the wind in winter approximately doubles the westward tide-induced residual current through the strait. The density current contributes little to the total residual current in both summer and winter.
Starting Page	931
Ending Page	942
Page Count	12
File Format	PDF
ISSN	02544059
Journal	Chinese Journal of Oceanology and Limnology
Volume Number	27
Issue Number	4
e-ISSN	19935005
Language	English
Publisher	SP Science Press
Publisher Date	2009-12-04
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	numerical models tides residual currents wind-driven currents South China Sea Qiongzhou Strait Oceanography
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Oceanography

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