Proceedings of the Korea Committee for Ocean Resources and Engineering Conference (한국해양공학회:학술대회논문집)

Korean Society of Ocean Engineers (한국해양공학회)
권호 표지

Numerical Simulation of water quality by ${\Delta}COD$ method for Inner Productivity Estimation of Yeong-Il Bay

간이변환 수질예측모델에 의한 영일만 내부생산성 평가

  • Yoon, Han-Sam (Dept. of Ocean Engineering, Pukyong National University) ;
  • Ryu, Cheong-Ro (Dept. of Ocean Engineering, Pukyong National University) ;
  • Lee, In-Cheol (Dept. of Ocean Engineering, Pukyong National University) ;
  • Kim, Heon-Tae (Dept. of Ocean Engineering, Pukyong National University)
  • Published : 2003.05.23
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Abstract

This study investigated the yearly variation of pollutant loads outflowing from six watershed of Yeong-il Bay and compared the relationship of pollutant load and water quality, and estimated the Inner productivity of Yeong-Il Bay by using ${\Delta}COD$ method which analysis nonlinear process of water quality. As the estimated results for the pollutant loads of Yeong-Il Bay, total COD load outflowing from Hyeong-san river in flood season(summer) of 2001 year was 2275.0 kg/hr and in dry(low water) season(winter) 852.8 kg/hr, respectively. Load quantity in flood season was about 2.67 times than that in dry season. And as the calculated results of the net-flux of water for seven divisions, it showed that the net-flux of water increased for the divisions of the north coast and inner sea of Yeong-Il Bay but decreased for the south coast. On the contrary, for the cases which water quantity increase from land, the net-flux of water in estuary front of Hyeong-san river decreased but outflowing quantity of that though division of the south coast of Homi-got increased. Finally, this study compared the Inner productions for flood and dry season of Yeong-il Bay by using ${\Delta}COD$ method.

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