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A simple Model for Separation of the Tsushima Current Stream Core by the Tsushima Island: a small viscosity limit

Seung, Young-Ho   (Department of Oceanography, inha UniversityUU0001092  );
  • 초록

    Recent observations reveal that the Tsushima Current has a double-cored structure downstream of the Tsushima Island. To explain this, a simple analytical model is proposed based on the assumption of small lateral eddy viscosity. This model suggests that an otherwise uniform current becomes to have a stream core immediately after it enters a channel due to the action of lateral friction. The core is initially broad but becomes sharper downstream. The speed at which the core develops depends on the intensity of lateral eddy viscosity. Likewise, a single-cored stream changes rapidly to a double-cored stream when it passes through an island located in the center of the channel. When the stream leaves the island behind, the reverse process from the double-to single-cored structures takes place. In this case, however, the double-cored structure is retained for a significant distance from the island. Overall, this model suggests that the double-cored structure of the Tsushima Current observed downstream of the Tsushima Island Is created by the lateral friction exerted by the Tsushima Island.


  • 주제어

    Tsushima Current in Korea Strait .   Stream core.  

  • 참고문헌 (19)

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 저자의 다른 논문

  • Seung, Young-Ho (19)

    1. 1988 "울기부근의 표층냉수 분포에 관한 운반 확산 모델" 韓國海洋學會誌 23 (1): 13~23    
    2. 1989 "동해의 열적작용이 해수순환에 미칠 수 있는 영향에 관한 고찰" 韓國海洋學會誌 24 (1): 29~38    
    3. 1992 "취송류 재현을 위한 3차원 스펙트랄모형 개발" 韓國海岸海洋工學會誌 = Journal of Korean society of coastal and ocean engineers 4 (2): 91~107    
    4. 1992 "동해 해수유입에 대한 수치모델: 대마난류 형성 및 수송량" 한국수산학회지 = Journal of the Korean Fisheries Society 25 (1): 58~64    
    5. 1992 "냉수형성이 동한난류에 미치는 영향에 대한 2층 모델" 한국수산학회지 = Journal of the Korean Fisheries Society 25 (1): 65~72    
    6. 1995 "동해의 상, 중층 순환 역학에 대한 다층모델" 韓國海洋學會誌 30 (3): 227~236    
    7. 1996 "A Simple Model of the Formation of Thermo-haline Front in the Southeastern Yellow Sea in Winter" Journal of the Korean Society of Oceanography 31 (1): 23~31    
    8. 1997 "Application of the Ventilation Theory to the East Sea" Journal of the Korean Society of Oceanography 32 (1): 8~16    
    9. 1998 "Southward Intrusion of the East Sea Intermediate Water into the Ulleung Basin: Observations in 1992 and 1993" Journal of the Korean Society of Oceanography 33 (4): 146~156    
    10. 1998 "A Note on the Outflow Boundary Conditions in Modeling the East Sea Circulation" Journal of the Korean Society of Oceanography 33 (4): 212~218    

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