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題 名 | 臺灣北部上游集水區降雨歷線特性之研究=The Hyetograph Characteristics of Upstream Watershed in Northern Taiwan |
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作 者 | 陳明杰; | 書刊名 | 國立臺灣大學農學院實驗林研究報告 |
卷 期 | 13:1=223 1999.03[民88.03] |
頁 次 | 頁1-19 |
分類號 | 436.124 |
關鍵詞 | 降雨歷線; 降雨強度公式法; Hyetograph; Instantaneous intensity method; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究蒐集臺北縣坪林集水區1991年至1998年、宜蘭縣福山集水區1993年至1998 年之延時24小時降雨量超過150mm的降雨資料,和間隔時間20min、延時6小時最大降雨量資 料進行分析。分析結果,以降雨尖峰時間對全部降雨延時的比值當做r,福山集水區延時24 小時的r值為0.6,延時6小時的r值為0.8,坪林集水區延時24小時的r為0.5,延時6小時的r 值為0.45。應用降雨強度公式法設計降雨歷線,以發生之最大降雨量為例,尖峰降雨量計算 與實測值的誤差比較,福山集水區延時24小時和延時6小時的誤差分別約為60%,坪林集水區 延時24小時和延時6小時的誤差分別約為50%,計算值大於實測值。另外,評估降雨歷線計算 值與實測值的適合性,福山集水區估計標準誤差的平均值,延時24小時和延時6小時分別為 2.79%和2.78%,坪林集水區估計標準誤差的平均值,延時24小時和延時6小時分別為3.00%和 3.30%,本研究之估計標準誤差的平均值低於其他地區的研究結果。 |
英文摘要 | Rainfall data over 150 mm with 24 hours duration and maximum rainfall data with 6 hours duration of Pin-lin watershed from 1991 to 1998 and Fu-shan watershed from 1993 to 1998 in northern Taiwan were collected respectively, to investigate the characterisics of hyetograph. The ratio of peak rainfall time by total rainfall duration was defined as r value. Ther values of duration 24 hours and 6 hours in Fu-shan watershed were 0.6 and 0.8, and those in Pin-lin 0.5 and 0.45. Design hyetograph was calculated by instantaneous intensity method. For example, with the maximum peak rainfall data, the difference between calculated peak rainfall and observed data of duration 24 hours and 6 hours in Fu-shan watershed were about 60%, and those in Pin-lin were about 50%. Besides, mean standard error of estimate was applied in order to evaluate the fitness of design hyetograph. The duration 24 hours and 6 hours in Fu-shan watershed were 2.79% and 2.78%, and in Pin-lin were 3.00% and 3.3.%. The mean standard error in this study was lower than other research areas in Taiwan. |
本系統中英文摘要資訊取自各篇刊載內容。