Journal Title
Title of Journal: J Ocean Univ China
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Abbravation: Journal of Ocean University of China
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Authors: He Wu Min Du Xiaoyong Wang Jie Meng
Publish Date: 2015/08/02
Volume: 14, Issue: 5, Pages: 829-834
Abstract
This paper mainly analyzes the tidal characteristics and smallscale mixing process near Zhoushan Islands First the spectral analysis and wavelet analysis are adopted for the measured tide level data and tidal current data from the Zhoushan sea area which indicate that the main tidal cycle near Hulu Island and Taohua Island is semidiurnal cycle the diurnal cycle is subordinate Both their intensities are changed periodically meanwhile the diurnal tide becomes stronger when semidiurnal tide becomes weak The intensity of baroclinic tidal current weakens at first and then strengthens from top to bottom Then in this paper the GreggHenyey GH parameterization method is adopted to calculate the turbulent kinetic energy dissipation rate based on the measured temperature and tidal current data The results of which shown that the turbulent kinetic energy dissipation rate around Hulu Island is higher than that around Taohua Island In most cases the turbulent kinetic energy dissipation rate during spring tide is larger than that during the neap tide the turbulent kinetic energy dissipation rate in the surface layer and the bottom layer are higher than that in the intermediate water the changes of turbulent kinetic energy dissipation rate and tidal current are basically synchronous The modeled turbulent kinetic energy dissipation rate gets smaller with the increase of the stratification however gets larger with the increase of shearing
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