수산해양기술연구(구 한국어업기술학회지) 58권 2호 (p.159-174)

수치실험을 통한 금오열도 해역의 해수유동 특성

Flow characteristics of Geumo Islands Sea area by numerical model experiments
키워드 :
Geumo Islands,Three dimensional numerical model experiment,Tidal residual current,Density current,Wind driven current,Topographical eddy

목차

서 론
재료 및 방법
   진단모델
   대상영역
   밀도, 조석 및 바람 응력장
   조석 및 바람 응력장
   초기 및 경계 조건
결과 및 고찰
   모델실험결과의 검증
   밀도류 분포
   취송류 분포
   잔차류(조석잔차류+밀도류+취송류) 분포
결 론
사 사
References

초록

Flow prediction was carried out through observational survey and three dimensional multi-layered numerical diagnostic model experiment to clarify the time and spatial structure of tidal current and residual flow dominant in the sea exchange and material circulation of the waters around Geumo Islands in the southern waters of Korea. The horizontal variation of tidal current is so large that it causes asymmetric tidal mixing due to horizontal eddies and the topographical effect creating convergence and dispersion of flow direction and velocity. Due to strong tidal currents flowing northwest-southeast, counterclockwise and clockwise eddies are formed on the left and right sides of the south of Sori Island. These topographical eddies are created by horizontal turbulence and bottom friction causing nonlinear effects. Baroclinic density flows are less than 5 cm/s at coastal area in summer and the entire sea area in winter. The wind driven currents assuming summer and winter seasonal winds are also less than 5 cm/s and the current flow rate is high in winter. Density current in summer and wind driven current in winter have a relatively greater effect on the net residual flows (tidal residual current + density current + density driven current) around Geumo Islands Sea area.