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RISS 인기검색어
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- 저자 : 박민대 ( Seok Soon Park (검색결과 6 건)
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박석순,이용석,박민대 ( Seok Soon Park,Yong Seok Lee,Min Dae Park ) 한국하천호수학회 1991 생태와 환경 Vol.24 No.4
The Stochastic Time River Elevator Approach Mode (STREAM) which is a multiconstituent stream ecosystem model was exclusively developed in this study. The formulation of STREAM is based on the Cell-In-Series (CIS) approach where stream is assumed as a series of completly mixed flow reactors. This approach is to use a Lagrangian coordinate instead of an Eulerian such that it can overcome the limitations repoted in the previous stream models, such as QUAL2E. Major constituents included in STREAM are Dissolved Oxygen (DO), Biochemical Oxygen Demand (BOD), Suspended Solid (SS), Coliform Bacteria, Nitrogen Series, Phosphorus Series, and Phytoplankton. Dissolved oxygen change caused by Sediment Oxygen Demand (SOD) and respiration and photosynthesis of periphyton and macrophyte are included in the model structure. STREAM was programed in a BASIC language and graphic was attached. In order to validate STREAM model, both STREAM and QUAL2E (developed by United States Environmental Protection Agency) were applied to the South Branch of Han River under the same amibient condition. The result indicated that STREAM could simulate most water qualities with same accuarcy and less computer time than QUAL2E.
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이용석,최은주,박민대,박석순 ( Yong Seok Lee,Eun Ju Choi,Min Dae Park,Seok Soon Park ) 한국하천호수학회 1992 생태와 환경 Vol.25 No.4
The dissolved oxygen changes caused by aquatic plants and sediments were computed in the Tancheon, a tributary of the Han River, by utilizing a stream model. According to the collected water quality conditions, the Tancheon was classified into two distinctive zones which were eutrophic zone in upstream area and polysaprobic zone in downstream area. The dissolved oxygen levels of the stream were determined mainly by the photosynthesis and respiration of the macrophytes in upstream area and by the sediment oxygen demand in downstream. Field data were obtained from two synoptic stream surveys performed during May and October, 1990 for two consecutive days. The high diurnal dissolved oxygen variation was observed in upstream area due to an excessive growth of aquatic plants. In downstream area, however, little diurnal variation with low dissolved oxygen level was observed, which would be attributed to high sediment oxygen demand and no discernible aquatic plant growth. In upstream area, the dissolved oxygen chan-ges caused by the photosynthesis and respiration were ranged from 55 to 100 g O_2/m^2/day from 30 to 70 g O_2/m^2/day, respectively, during the first survey. The changes were ranged from 40 to 80 g O_2/m^2/day for the photosynthesis and from 25 to 55 g O_2/m^2/day for the respiration during the second survey. In downstream area, the sediment oxygen demands were measured from 4 to 100 g O_2/m^2/day during both surveys.
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박석순,이용석,박민대 江原大學校 附設 環境硏究所 1991 環境硏究 Vol.8 No.-
The Stochastic Time River Elevator Approach Mode(STREAM)which is a multiconstituent stream ecosystem model was exclusively developed in this study. The formulation of STREAM is based on the Cell-In-Series(CIS)approach where stream is assumed as a series of completly mixed flow reactors. This approach is to use a Lagrangian coordinate instead of an Eulerian such that it can overcome the limitations repoted in the previous stream models, such as QUAL2E.Major constituents included in STREAM are Dissolved Oxygen(DO), Biochemical Oxygen Demand(BOD), Suspended Solid(SS), Coliform Bacteria, Nitrogen Series, Phosphorus Series, and Phytoplankton. Dissolved oxygen change caused by Sediment Oxygen Demand(SOD) and respiration and photosynthesis of periphyton and macrophyte are included in the model structure. STREAM was programed in a BASIC language and graphic was attached. In order to validate STREAM model, both STREAM and QUAL2E (developed by United States Environmental Protection Agency) were applied to the South Branch of Han River under the same amibient condition. The result indicated that STREAM could simulate most water qualities with same accuarcy and less computer time than QUAL3E.
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수중식물과 침전물에 의한 용존산소 변화량 결정 : 하천모델 이용법;a Stream Model Approach
이용석,최은주,박민대,박석순 江原大學校 附設 環境硏究所 1993 環境硏究 Vol.10 No.-
하천모델을 이용하여 한강 지류인 탄천에서 수초와 침전물에 의한 용존산소 변화량을 측정하였다. 수질자료에 따르면 탄천은 상류의 부영양화 지역 (Eutrophic Zone)과 하류의 강부수성 지역 (Polysaprobic Zone)으로 구분되며 상류는 수초의 광합성과 호흡이, 하류는 침전물 산소요구량이 수중 용존산소 농도 결정에 주 역할을 하고 있다. 하천조사는 1990년5월과 10월 2회에 걸쳐 2일간 연속적으로 실시되었다. 조사 결과 상류의 경우 수초 광합성과 호흡에 의한 매우 큰 용존산소 일주변화가 관찰되었다. 그러나 하류의 경우 침전물 산소요구량이 크고 수초 성장이 없기 때문에 일주변화가 거의 나타나지 않는 매우 낮은 농도가 측정되었다. 1차 조사시 상류에서 수중식물의 광합성량과 호흡양은 각각 55~100g 0₂/m²/day, 30~70g 0₂/m²/day으로 측정되었으며, 2차 조사시 각각 40~80g 0₂/m²/day, 25~55g 0₂/m²/day으로 측정되었다. 하류에서는 침전물 산소요구량이 1차 및 2차 조사시 동일하게 4~100g 0₂/m²/day로 측정되었다. The dissolved oxygen changes caused by aquatic plants and sediments were comput-ed in the Tancheon, a tributary of the HanRiver, by utilizing a stream model. According to the collected water quality conditions, the Tancheon was classified into two distinc-tive zones which were eutrophic zone in upstream area and polysaprobic zone in downstream area. The dissolved oxygen levels of the stream were determined mainly by the photosynthesis and respiration of the macrophytes in upstream area and by the sediment oxygen demand in downstream. Field data were obtained from two synoptic stream surveys performed during May and October, 1990 for two consecutive days The high diurnal dissolved oxygen variation was observed in upstream area due to an excessive growth of aquatic plants. In downstream area, however, little diurnal varia-tion with low dissolved oxygen level was observed, which would be attributed to high sediment oxygen demand and no discernible aquatic plant growth. In upstream area, the dissolved oxygen changes caused by the photosynthesis and respiration were ranged from 55g 100g 0₂/m²/day from 30 to 70 g 0₂/m²/day, respectively, during the first survey. The changes were ranged from 40 to 80g 0₂/m²/day for the photosynthesis and from 25 to 55g 0₂/m²/day for the respiration during the second survey, In downstream area, the sediment oxygen demands were measured from 4 to 100g o₂/m²/day during both surveys.
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