查詢結果分析
來源資料
頁籤選單縮合
題名 | 集水區降雨逕流歷程之連續性模擬=Continuous Simulations for Watershed Rainfall-runoff Processes |
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作者 | 李光敦; 洪夢秋; 林怡廷; 張進鑫; Lee, Kwan-tun; Hung, Meng-chiu; Lin, Yi-ting; Chang, Chin-hsin; |
期刊 | 農業工程學報 |
出版日期 | 20060600 |
卷期 | 52:2 民95.06 |
頁次 | 頁12-22 |
分類號 | 436.124 |
語文 | chi |
關鍵詞 | 連續性逕流模擬; 地形指數模式; 運動波-地貌瞬時單位歷線模式; 地理資訊系統; 日流量模式; 小時流量模式; Continuous runoff simulations; TOPMODEL; Kinematic-wave based geomorphic IUH model; Geographic information system; Daily flow model; Storm event model; |
中文摘要 | 傳統水文模式均祇分別針對長期距流量或是短期距流量進行模擬,因此長期距模式無法模擬颱洪暴雨期間流量急遽上升之現象,而短期距模式則無法模擬地下水流從土壤含水層緩慢釋出之情形。故本研究建立連續型逕流模式,結合地形指數模式與運動波-地貌瞬時單位歷線模式,以進行日流量模擬與小時流量模擬。研究中並由累積雨量制訂出模式串接標準,銜接日流量模式與小時流量模式,以進行集水區降雨逕流歷程之連續性模擬。因此在無降雨或低降雨強度情況下,可藉由日流量模式模擬集水區地下水流的退水過程;而於高強度集中降雨之颱洪時期,則可藉由小時流量模式掌握洪峰流量及尖峰到達時刻。因此本研究所建立之連續型逕流模擬方式,可適切反應出長期距與短期距之集水區逕流現象。 本研究以橫溪集水區為例,利用數值高程模式求得地形指數模式及運動波-地貌瞬時單位歷線模式中所需之地文因子,以進行日流量及颱洪流量之模擬。研究中並配合地理資訊系統ArcView GIS應用軟體,建立集水區地文與水文資訊查詢系統,將模式操作轉換為視窗化介面,使用者僅須以滑鼠點選集水區河川網路上任一位置點,即可進行該指定位置點以上地文因子之查詢,以及集水區之長、短期距的降雨逕流演算。 |
英文摘要 | Conventional hydrologic models are usually only applied to long-term or short-term runoff simulations. Consequently, the long-term runoff model cannot adequately simulate the rapid rising discharge during typhoons, and the short-term runoff model cannot well simulate the runoff slow flowing out of the subsurface stratum. The TOPMODEL and the kinematic-wave based geomorphic IUH model were developed for daily flow and storm runoff simulations, respectively. A criterion was developed with cumulated rainfall to link these two models to form a continuous runoff simulations. The daily runoff model can well simulate the recession process of groundwater during no/low rainfall. While applying hourly simulation model, especially for the predictions of storm peak flow and time to peak, a better performance can be found in hourly-flow simulations. Therefore, the runoff situations of daily flow and storm runoff can be both reflected adequately with the continuous runoff simulations. The Heng-Chi watershed is adopted for applying the TOPMODEL and the KW-GIUH model for long/short terms runoff simulations. The geomorphic parameters of the watershed were calculated by using a digital elevation model. The continuous runoff simulations were embedded into an ArcView GIS platform to form a geomorphic- hydrologic inquiry system for practical applications. The operation of runoff modeling was then transferred onto a convenient Windows based interface. When using the inquiry system, users can interactively select a location for a subwatershed outlet by simply clicking on the desired point within the watershed stream network, and then the geomorphic factors and runoff calculations can be performed. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。