Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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The Spatial Characteristics of Stratification in Deukryang Bay, Korea

밀도류 효과에 으히나 득령만의 성층변동 특성

  • Byung-Gul Lee (Dept. of Ocean Civil Engineering, Cheju National University, Cheju 690-756, Korea) ;
  • Kyu-Dae Cho (Dept. of Ocean Civil Engineering, Cheju National University, Cheju 690-756, Korea)
  • Published : 1998.04.01
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Abstract

The spatial characteristics of stratification In Deukryang Bay were studded using observed data and analytical models. From the description of the density structure and its the potential energy anomaly (PEA) from observed data along longitudinal direction (from the mouth to head of the bays, we found that the stratification Intensity could be changed strongly by density current effect during the spring-neap tidal cycle, and depth variation. To find out density current effect for the formation of the stratification In detail, we Implemented a diagnostic approach by using the modified analytical model including density current, tidal current, surface heating and wind stirring. The model allowed for the observed similarities for the whole domain in the bay and increased tidal mixing efficiency value s up to 0.006-0.007 as compared to the results without density current effect. We found that the density current effect was also an important key factor In determining the formation of the spatial distribution of stratification.

득량만의 조석주기에 따른 성층특성을 연구하기 위하여 우선 30여개 관측점에서 관측된 수온, 염분, 밀도, 해류, 열수지, 바람, 밀도류 자료를 조사하였다. 이 관측자료를 토대로 성층현상을 규명할 수 있는 해석적 모델을 개발하였으며 이 해석적모델을 이용하여 얻어진 연구결과에 따르면, 득량만의 성층을 이루는 요인은 조석, 태양열, 밀도,류인 것으로 나타났으며, 성층을 파과할 수 있는 조석에너지의 혼합에너지의 에너지 기여율 $\varepsilon$ 은 약 0.020 - 0.021정도 되는 것으로 나타났다.

Keywords

References

  1. Physical Oceanography of Coastal Water Bowden, K.F.
  2. Continental Shelf Research v.8 A Tidal Mixing Front in a Area Influenced by Land Runoff Czitrom, S.P.R.;Budeus, G.;G. Krause
  3. Continental Shelf Research v.11 Seasonal Stratification in the Northwest European Shelf Seas Elliott, A. J.;T. Clarke
  4. Estuarine, Costal and Shelf Science v.30 Estuary/Ocean Exchange Controlled by Spring-Neap Tidal Mixing Griffin, D. A.;P. H. Leblond
  5. Turbulence and Atmosphere Imanuki, A.
  6. Korea, Abstract of (1st) Domestic Conference of Research Center for Ocean Industrial Development v.5 Two-Dimensional $M_2$ Tidal Current in Deukryang Bay Lee, B. G.;Hong, C. H.;K. D. Cho
  7. Korea. Bulletin de la Societe franco-japonaise d'oceanographie The Stratification Variations during Spring and Neap Tidal Periods in Deukryang Bay Lee, B. -G.;Yanagi, T.;Takeoka, T.;K.-D. Cho
  8. Estuarine, Costal and Shelf Science v.28 The Negative Role of Turbulence in Estuarines Mass Transport Nunes Vaz, R.A.;Lennon, G.W.;J.R. de Silva Samarasinghe
  9. Physical Oceanography of Estuaries (and Associated Coastal Waters) Office, C. B.
  10. Estuarine, Coastal and Shelf Science v.28 Transient Salt-Wedges in a Tidal Gulf: A Criterion for Their Formation Samarasinghe, J.R. de Silva
  11. Journal of Geophysical Research v.83 Fronts on the Continental Shelf Simpson, J. H.;Allen, C. M.;N. C. G. Morris
  12. Deep Sea Research v.28A Models of Stratification and Frontal Movement in Shelf Seas Simpson, J. H.;D. Bowers
  13. Estuarine, Coastal and Shelf Science v.33 A Prescriptive Model for Stratification Induced by Freshwater Runoff Simpson, J. H.;Sharples, J.;T. P. Rippeth
  14. Nature v.250 Fronts in Irish Sea Simpson, J. H.;J. R. Hunter
  15. Journal of the Oceanographical Society of Japan v.36 Variability of the Constant Flow in Osaka Bay Yanagi, T.
  16. Umi to Sora (Sea and Sky) v.58 Heat Budget of Uwajima Bay Yanagi, T.
  17. Continental Shelf Research v.7 Temporal and Spatial Variation in a Tidal Front Yanagi, T.;H. Tamaru
  18. Dynamics of Atmosphere and Oceans v.12 A Tidal Front influenced by River Discharge Yanagi, T.;S. Takahasi