Vertical mixing observed on the continental slope of the southwestern East/Japan Sea

Title
Vertical mixing observed on the continental slope of the southwestern East/Japan Sea
Author(s)
서성봉; 박영규; 박재훈; 홍창수; 김동국
KIOST Author(s)
Seo, Seongbong(서성봉)Park, Young Gyu(박영규)Kim, Dong Guk(김동국)
Publication Year
2017-04-12
Abstract
Over the southwestern East/Japan Sea, 25 hours long hourly CTD, and a free falling microstructure profiler (TurboMAP) data were obtained during a spring and neap tidal period. Vertical diffusivities estimated density inversion from CTD profiles using the Thorpe scale, and shear from the microstructure profiler are compared. When converting the Thorpe scale into the diffusivity two different mixing efficiency parameterizations were utilized. One is a widely used method proposed by Osborn (1980) in which the functional form is independent of turbulent intensity. The other is relatively recent one by Shih et al. (2005) in which the functional form is dependent on turbulent intensity. Both methods produce similar vertical structure, but the one based on Shih et al. (2005) is smaller than that based on Osborn (1980), The diffusivity estimated from microstructure measurement below the main thermocline was much greater during the spring tidal period (5.5e-4(Osborn), 9.2e-5(Shih) m2/s) than the neap (2.6e-4(Osborn), 5.3e-5(Shih) m2/s) suggesting internal tide induced mixing.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/24176
Bibliographic Citation
Pacific-Asian Marginal Seas (PAMS) Meeting, pp.26, 2017
Publisher
Pacific-Asian Marginal Seas (PAMS) Meeting
Type
Conference
Language
English
Publisher
Pacific-Asian Marginal Seas (PAMS) Meeting
Related Researcher
Research Interests

ocean circulation,ocean mixing,marine debris,해양순환,해양혼합,해양부유물

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