頁籤選單縮合
題名 | 宜蘭地區水資源初探 |
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作 者 | 張智欽; | 書刊名 | 宜蘭農工學報 |
卷期 | 7 1993.12[民82.12] |
頁次 | 頁202-235 |
分類號 | 445.22 |
關鍵詞 | 流域; 降水量; 蒸發散量; 逕流量; 地下水; Basin; Precipitation; Evapotranspiration; Runoff; Groundwater; |
語文 | 中文(Chinese) |
中文摘要 | 以流域為水文單位對宜蘭地區作水文分析及地下水位觀測,得到下列結果: 1. 全區年算術平均降水量為 3156mm,面積加權平均為 3051mm,二者相差 3% 左右。 月平 均降水量九月最多, 超過 500mm,四月最少約 100mm。 區域分配上,平原年平均降水量在 2500-3000mm 之間, 山區迎風坡多在 4000mm 以上。 就流域而言, 蘇澳溪最高, 為 3947.6mm,往南北遞減,至最北之得子口溪僅有 2631mm。 2. 年平均可能蒸發散量 1011mm,以一、二月最低,少於 30mm,七、八月最高在 160mm 以 上, 可能蒸發散量明顯受地形影響,山地與平原約以 1000mm 作為分界,山區少於 1000mm ,實際蒸發散量以可能蒸發散量的 0.7 倍計算,全區約為 708mm。 3. 全區年平均逕流量為 4862.64 × 10 �� m �藺� 154.2CMS,月平均逕流量的時間和空間 的分配大致與降水量相同。全區平均逕流係數為 0.77。 4. 宜蘭平原地下水, 主要來自各沖積扇的入滲水,因受地下水環境影響匯成北中南三個地 下水系,豐枯水期水位變化不大,多在 2 公尺以內。 |
英文摘要 | Concerning the hydrological analysis and the watertable observation on drainage in I-Lan area, the conclusions were obtained as the following. 1. The arithmatical annual mean of precipiation in the region is 3156mm. Comparing with the areal precipitation, 3051 mm, the difference is about 3%. The average precipitation in September, more than 500mm, is the highest in a year, while April is the lowest month with only 100 mm. The average annual precipitation in the plain is between 2500 and 3000 mm while that on the windward slops is more than 4000 mm. The spatial distribution shows that the basin of Su-au Creek has the highest precipitation with 3948 mm, and it decreases along to the south and to the north. 2. The average annual potential evapotranspiration (ETp) of the whole ergion is 1011 mm. The ETp in January and February is the lowest with only 1011 mm, while that of in July and August is the lowest with more than 160 mm. The ETp of 1000 mm is the division between the mountain area and the plain. The mountain area has the ETp less than 1000 mm. The actual ET of the whole region calculated from the potential ET is about 708 mm, which equals to 0.7 time of the latter value. 3. The average annual runoff of the whole region is 4682.64 × 10 �� m �� or 154.19 CMS. Its temporal and spatial distribution is similar to the precipitation. The average runoff coefficient of the whole region is 0.77. 4. The ground water in I-Lan Plain mainly comes from the alluvial fans and infiltration water. It forms the north, the middle and the south groundwater basin because of the environment of ground water. The difference between the high-water period and the low-water period isn't significant with only about 2 meters. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。