NDLI: Currents and mixing in the northern South China Sea

Content Provider	Springer Nature Link
Author	Liu, Junliang Cai, Shuqun Wang, Sheng’an
Copyright Year	2010
Abstract	We investigated the vertical distribution of current velocity data of the entire water column at a site on the continental shelf of the northern South China Sea (SCS) from August 4 to September 6, 2007, and found that the characteristics of barotropic and baroclinic tides are mainly diurnal. During the observation period, we also estimated the mixing before and after the passage of Typhoon Pabuk. We found that the internal-wave-scale dissipation rate, the turbulent dissipation rate, and the mixing rate in every water layer increased by about an order of magnitude after the typhoon passage. We analyzed a case of abrupt strong current and calculated the mixing rate before, during, and after the typhoon event. The results show that the internal-wave-scale dissipation rate and the mixing rate in every water layer increased by about two orders of magnitude during the event, while the turbulent dissipation rate increased by about an order of magnitude. Passage of the abrupt strong current could also have increased the mixing rate of affected seawater by more than an order of magnitude. However, the passage of the typhoon differed in that there was an increase in mixing only in the lower layer where the abrupt strong current was particularly strong. The variation of the mixing rate may help us to understand the effects of typhoons and abrupt strong currents on the mixing of seawater.
Starting Page	974
Ending Page	980
Page Count	7
File Format	PDF
ISSN	02544059
Journal	Chinese Journal of Oceanology and Limnology
Volume Number	28
Issue Number	5
e-ISSN	19935005
Language	English
Publisher	SP Science Press
Publisher Date	2010-09-11
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	current field typhoon abrupt strong current mixing rate South China Sea (SCS) Oceanography
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Oceanography

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