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題 名 | 定率性日流量模式之應用研究=The Application of Deterministic Daily Runoff Modeling |
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作 者 | 李光敦; 林怡廷; 吳英民; | 書刊名 | 農業工程學報 |
卷 期 | 49:1 2003.03[民92.03] |
頁 次 | 頁9-22 |
分類號 | 436.124 |
關鍵詞 | 水域生態系統模式; 水庫水質模擬; 敏感度分析; 優養化; 風險評估; 動態模式; Aquatic ecosystem model; Reservoir water quality simulation; Sensitivity analysis; Eutrophication; Risk assessment; Dynamic modeling; |
語 文 | 中文(Chinese) |
中文摘要 | 早期之日流量模式均利用水文紀錄資料,以概念化模式或統計分析方式模擬集水區之降雨逕流過程。然而模式建立過程中須檢定模式參數,在無足夠水文紀錄供模式參數檢定之地區,均無法適當模擬集水區逕流。本研究參考地形指數模式架構(Beven and Kirkby, 1979),建立可充分反應集水區地文與水文特性之日流量模式,使其架構能符合實際水文現象,以進行集水區逕流模擬。研究中配合數值高程模式推求地形指數模式中所需之地文因子,並與李等(2000)所發展的參數型日流量模式進行比較。研究過程得知,地形指數模式可減少模式中所需之待定參數,並改善原有模式參數物理意義不明顯之缺點。 研究中選取淡水河流域之橫溪集水區為模式應用區域,利用大豹站日雨量與日平均溫度紀錄資料,以及橫溪站日流量紀錄資料,以進行兩模式之降雨逕流模擬比較。研究結果發現,地形指數模式於低流量部份,有較佳的模擬結果;此種以定率性方式進行日流量之推估方法,可供水資源規劃設計之參考應用。 |
英文摘要 | Conventional approaches for watershed daily flow were usually by conceptual model or statistical analysis methods. In establishing the simulation model, lots of model parameters need to be calibrated. It is therefore inapplicable to watershed with limited hydrologic records. In this study, the framework of TOPMODEL (Beven and Kirkby, 1979) is referred. The model can well represent the characteristics of watershed geomorphology and the hydrologic behavior. The geomorphic parameters of the model can be determined by using a digital elevation model. The model structures of the TOPMODEL and the parametric daily runoff model (Lee et al., 2000) are detail compared. It is found that the physical characteristics of the model parameters in the TOPMODEL are clearer than those in the parametric daily runoff model, and only two parameters in the TOPMODEL need to be calibrated. The Heng-Chi watershed, which is located in the Tan-Shui River Basin, is adopted for models application. Daily rainfall and temperature records in the Ta-Bao station and discharge record in the Heng-Chi station were collected for model verification. The results show that TOPMODEL has better simulations than the parametric daily runoff model especially in the low-flow periods. The geomorphically-based models established in this study can be applied for planning and design in water resource engineering. |
本系統中英文摘要資訊取自各篇刊載內容。