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http://dx.doi.org/10.7850/jkso.2011.16.4.155

Coastal Current Along the Eastern Boundary of the Yellow Sea in Summer: Numerical Simulations  

Kwon, Kyung-Man (Department of Oceanography, College of Ocean Science and Technology, Kunsan National University)
Choi, Byoung-Ju (Department of Oceanography, College of Ocean Science and Technology, Kunsan National University)
Lee, Sang-Ho (Department of Oceanography, College of Ocean Science and Technology, Kunsan National University)
Cho, Yang-Ki (School of Earth and Environmental Sciences, Seoul National University)
Jang, Chan-Joo (Climate Change & Coastal Disaster Research Department, KORDI)
Publication Information
The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY / v.16, no.4, 2011 , pp. 155-168 More about this Journal
Abstract
Coastal boundary current flows along the eastern boundary of the Yellow Sea and its speed was about 0.l m/s during the summer 2007. In order to find major factors that affect the coastal boundary current in the eastern Yellow Sea, three-dimensional numerical model experiments were performed. The model simulation results were validated against hydrographic and current meter data in the eastern Yellow Sea. The eastern boundary current flows along the bottom front over the upper part of slopping bottom. Strength and position of the current were affected by tides, winds, local river discharge, and solar radiation. Tidal stirring and surface wind mixing were major factors that control the summertime boundary currents along the bottom front. Tidal stirring was essential to generate the bottom temperature front and boundary current. Wind mixing made the boundary current wider and augmented its north-ward transport. Buoyancy forcing from the freshwater input and solar radiation also affected the boundary current but their contributions were minor. Strong (weak) tidal mixing during spring (neap) tides made the northward transport larger (smaller) in the numerical simulations. But offshore position of the eastern boundary current's major axis was not apparently changed by the spring-neap cycle in the mid-eastern Yellow Sea due to strong summer stratification. The mean position of coastal boundary current varied due to variations in the level of wind mixing.
Keywords
Yellow Sea; coastal boundary current; tidal stirring; wind mixing;
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