낙동강 하구역의 수리특성과 퇴적물 성상특성에 관한 연구

Abstract

In this study, as a basic study to understand hydraulic characteristics and sediment property in the Nakdong River Estuary, we conduct oceanographic survey and deposited and settling matter analysis in front and backside sea of Jinudo, Nakdong river channel. Also, as a result of these characteristic, we estimate sediment pollution in the Nakdong river estuary. As a result, there are different hydraulic characteristics among front and backside sea of Jinudo, Nakdong river channel by survey results of salinity, turbidity, current, groundwater and suspended solid behavior. On the other hand, the result that C/N ratio of deposited and settling matters indicate 8.1 and 9.0 in front and backside area of Jinudo in the Nakdong estuary, it is affected by the marine-originated organic matter. The C/N ratio near the Nakdong river channel indicate 11.7, it is affected by land-originated organic matter. As a result, it is considered that accumulation of high organic pollutant near backside area of Jinudo by concentration results of PON, POC, IL and fine fraction of deposited and settling matters.