Abstract
최근 지구온난화에 따른 해수면 상승과 태풍의 내습으로 인하여 발생되는 폭풍해일 및 집중호우에 대하여 낙동강 하류부의 수리거동을 수치모형(EFDC)을 이용하여 해석하였다. 낙동강 하구둑을 포함한 하류부 일대에 대해 수리거동을 해석하기 위하여 대상영역을 진동에서 가덕도를 포함한 외해부까지 확장하였다. 수치모형에 의한 수위의 재현성을 검토하기 위하여 2003년 및 2006년 발생한 태풍 호우사상을 대상으로 각 수위관측지점에서의 관측 수위와 계산수위를 비교 하였다. 금번 실시된 연구결과 수치해석에 사용된 수치모형(EFDC)은 높은 재현성을 가지고 있음을 알 수 있었고 차후 폭넓은 연구에 활용가능성이 높다고 판단되었다. This study analyzed a hydrodynamic behavior using the EFDC model (Environmental Fluid Dynamics Code) in the downstream of the Nakdong River in the case of a storm surge and a localized torrential rainfall caused by a major typhoon, and the sea level rise caused by global warming. The study area is selected Gaduk island with the lower boundary and Jindong with the upper boundary, to investigate the total river hydrodynamic behavior including the estuary. In order to verify this numerical model, the calculated results was compared with the observed stage at each gauging point in case of the storm rainfall in 2003 and 2006. From the results, it was shown that the numerical model(EFDC) has high accuracy and is useful in simulating more various cases.
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