한국방재학회:학술대회논문집

Korean Society of Hazard Mitigation (한국방재학회)
권호 표지

Flow and Diffusion of Lower Han River Considering Tidal Elevation in Yellow Sea

서해안 조위를 고려한 한강 하류부의 흐름 및 확산

  • 서일원 (서울대학교 건설환경공학부) ;
  • 송창근 (서울대학교 건설환경공학부) ;
  • 이명은 (서울대학교 건설환경공학부)
  • Published : 2008.02.28
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Abstract

It is well-known fact that tidal difference between the ebb and flow in Yellow Sea is about 9 m so that it has largest value in the world. This wide range of tide level enables Yellow Sea water to intrude into main stream of Han River. However, the study of the tidal reach of Han River has not been carried out thoroughly since North and South Koreas share this region so that topography data and physical measurement are lacking. In this study, to examine the reverse flow and dispersion behavior by tidal effect at the tidal reach of Han River, 2-D river analysis models were applied. RMA-2 was applied to calculate the horizontal velocities and water surface elevation. With the results of velocities and water depth, RAM4, which is 2-D advection-dispersion model based on FEM was simulated to analyze the horizontal transport behavior of BOD.

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