한국 근해에서의 난류에너지소산률 관측

Title
한국 근해에서의 난류에너지소산률 관측
Alternative Title
Measurements of turbulent energy dissipation rate in the seas adjacent to Korea
Author(s)
이재학; 장성태; 홍창수; 장찬주; 민홍식
KIOST Author(s)
Lee, Jae Hak(이재학)Jang, Chan Joo(장찬주)
Publication Year
2007-05-24
Abstract
Measurements of turbulent kinetic energy dissipation rate ε were conducted in selected regions in the Yellow, East China and East/Japan Seas using a microstructure profiler in the warm seasons of 2005 and 2006. The data show different vertical structures of ε with a wide range from 10-10 to close to 10-5 Wkg-1 between the three seas. The largest value of ε, 10-5 Wkg-1, appears in the surface layer. In the Yellow Sea and East China Sea, ε reaches 10-6 and 10-7 Wkg-1 near the bottom and in the lower thermocline, respectively, indicating direct effects of tidal stirring and internal waves on the generation of turbulence. Values of the vertical eddy diffusivity Kz estimated from ε and buoyancy frequency are O(10-3 m2s-1) but it exceeds 10-2 near the surface and the bottom in the Yellow Sea and East China Sea. In the East/Japan Sea, Kz is generally smaller than that in the Yellow Sea and East China Sea by an order of magnitude.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/30567
Bibliographic Citation
14차 PAMS/JECSS workshop, pp.76 - 77, 2007
Publisher
Hiroshima University
Type
Conference
Language
English
Publisher
Hiroshima University
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