| Title |
Simulation of Dissolved Oxygen in Network Stream |
| Authors |
이상희 ; 박석순 ( Sang Hee Lee ; Seok Soon Park ) |
| Abstract |
A water quality modeling study was performed for network stream located at western part of Lower Nakdong River. Model construction was based on SNSIM(Stream Network Simulation Model which was developed by United States Environmental Protection Agency. The study area includes Western Nakdong River, Joman River, and their tributaries. The area was divided into 22 reaches according to the model structure. Each reach was then subdivided into uniform computational element of 0.1km. In order to characterize study area, two synoptic field surveys were performed during February 6∼7 and March 29∼30, 1991 periods at network stream and input tributaries. The model was calibrated to the February survey data and verified to the March survey data. The water quality parameters simulated in the model included dissolved oxygen(DO), carbonaceous biochemical oxygen demand(CBOD), and nitrogenous biochemical oxygen demand (NBOD). Computer code of SNSIM model was modified in this study to be executable on IBM PC or comparable with metric input/output unit. The study indicated that the modified SNSIM model would be an effective tool to simulate the water qualities in the complicated stream network. The predicted water qualities displayed reasonable agreements with the field measurements during both surveys. |