查詢結果分析
來源資料
相關文獻
- 廣大水面上年平均蒸發量之推定:應用輸送現象論原理推定蒸發量之研究
- 水面及土壤面上熱傳導量推定方法之研究 (月平均蒸發量之推定):應用輸送現象論原理推定蒸發量之研究
- Relative Sea-Level Changes in Oligocene to Miocene Strata in Northern Taiwan: A Preliminary Study
- 水波盪漾之數值模擬
- 斷面水槽中不規則波統計特性的探討
- 礫石粒徑與海水面變化之關係--以屏東沖積扇群為例
- 風場引起的水面條紋
- 日本多孔隙排水面層之設計與施工技術探討
- 提升氦氧混合氣水面供氣潛水訓練
- 海水面變化及陸棚沈積作用--探討臺灣海峽海砂資源之賦存
頁籤選單縮合
題 名 | 廣大水面上年平均蒸發量之推定:應用輸送現象論原理推定蒸發量之研究 |
---|---|
編 次 | 1 |
作 者 | 白井清恆; 車張堅; | 書刊名 | 中原學報 |
卷 期 | 17 1988.12[民77.12] |
頁 次 | 頁71-84 |
分類號 | 434.287 |
關鍵詞 | 水面; 蒸發量; |
語 文 | 中文(Chinese) |
中文摘要 | 決定灌溉用水量時最基本的要素為蒸發散量,其為水面蒸發或土壤面蒸發與葉面蒸散之總稱,目前推估蒸發量最精確的方法為Penman法,然而該法在理論上尚有缺點,對於各種蒸發現象未能作合理的解釋。近年來,輸送現象論在理論上有極大的進展,本研究特利用該原理對蒸發量的推定方法重新加以探討,同時採用本省各地的氣象觀測資料分析比較上述二法之優劣。 由於熱傳導量之年總和為零,因此本文首先推算年平均蒸發量。根據計算結果可知,新的蒸發量計算法較Penman法為佳,在理論上亦較為完備,同時,若適當的考慮作物因子,對於蒸發散比在數值上鉅大的差異新法亦能作合理的說明。 因資料缺乏,文中部分尚無法作完全理論的分析,為提高本法的精確度,將來宜再配合多項實際觀測,諸如純放射量、風速垂直分佈、總熱傳達係數等。此外,欲推估月平均恭發量峙,須先分析熱傳導量的變化,此點將在本文第二篇中詳加探討。 |
英文摘要 | Evapotranspiration, summary of soil surface evaporation and leaves transpiration, is the most basic element in determinating irrigation requirement. At present, the most accurary method to estimate the ET is Penman method. There are, however, some theoretical short comings that don't make reasonable explaination in every evaporating Phenomena. Recently, Transfer Phenomena Theory has made a great progress in theoretical analysis. Therefore, this research particular1y uses that principle to discuss again to the estimated method of evaporation. At the some time, in analysizing observating meterological data around this island makes us understand which method between Penman and Transfer Phenomena is better. According to zero summary of annual heat conduction, we first estimate annual average evaporation. By the computing result, new estimating method is better than Penman. Not only more complete theoretical analysis, but properly consideration of crop factor, it can make reasonable explanation in estimating ET ratio which has large variation in numerical analysis. We can not make a perfect theoretical analysis because of the lack in data of some area. To improve the accuracy of this Transfer Phenomena Theory, needed are more practical observation, such like net radiation, vertical distribution of wmd velocity total heat transfer coefficient. Besides, for estimating monthly average evaporation, it must analyze the change of heat conduction. That will be discussed in next paper. |
本系統中英文摘要資訊取自各篇刊載內容。