A Numerical Prediction of Pollutant Material Budget during the Flood and Dry Season in Gwangyang Bay

J. Ocean Eng. Technol. 2009;23(4):25-31.

Kim Jin-Hyuk,Lee In-Cheol,Yoon Han-Sam

Department of Ocean Engineering Pukyong National University,Department of Ocean Engineering Pukyong National University,Research Center for Ocean Industrial Development Pukyong National University

광양만의 홍수기 및 갈수기의 오염물질수지 예측

김진혁,이인철,윤한삼

부경대학교 해양공학과,부경대학교 해양공학과,부경대학교 해양산업개발연구소

Keywords: Pollutant material budget, Water quality, Hydrodynamic model, Flood season, Dry season, Gwangyang Bay

핵심용어: 오염물질수지, 수질, 해수유동모형, 홍수기, 갈수기, 광양만

Abstract

To predict pollutants during the flood and dry season in Gwangyang Bay, the net-fluxes and pollutant material budgets of COD, T-N, and T-P were calculated in Gwangyang Bay using a 2-D hydrodynamic model. Calculating the net-flux for each area in Gwangyang Bay showed that the net-fluxes in regions IV, V, and VII were increasing, but those of regions II, III, and VI were decreasing. In budget calculations for COD, T-N, and T-P in Gwangyang Bay, it was estimated that during the dry season the COD is approximately 1.6 times higher than during the flood season. The T-N during the flood season is approximately 7 times higher than during the dry season. However, the material budget for T-P in Gwangyang Bay predicted that it is almost nonexistent. Moreover, the central part of Gwangyang Bay (Region IV) has the highest material budget of overall pollutants.