由河川流量資料與流量歷線推估中部地區地下水補注量

本研究主要在於利用由河川流量資料建立地下水補注量之模式。本研究應用消退曲線位移法與基流資料估計法估計中部地區，濁水溪、烏溪、北港溪三流域地下水補注量之研究。當地表逕流作用輕微或地下水頭趨近穩定時，消退曲線位移法以河川流量歷線地下水消退部分之消退行為，其主要消退曲線為一近似直線之曲線為假設，來進行估算地下水補注量；模式二為一基流分離法，藉分析連續資料之過程，將地下水排水量（或稱基流量）由河川流量歷線分離出來，並當分析時間夠久時，地下貯水系統水平衡變化所產生的影響可忽略，而視所估計出之平均地下排水量為有效補注量。

關鍵字

歷線；地下水補注；消退曲線位移法；基流資料估計法

並列摘要

The purpose of this paper is to investigate the balance of recharge and discharge of ground-water from streamflow hydrographs without considering different hydrogeological conditions of basins. Two methods were applied at Cho-Shui Shi basin in Taiwan. The first method of recession-curve-displacement is used to estimate ground-water recharge and assuming the linearity of the Master Recession Curve during times when direct(surface) runoff is not significant or when the profile of the ground-water head distribution becomes nearly stable. The second method of base-flow-record estimation is one of base-flow separations, and has a relatively arbitrary procedure of estimating a continuous record of ground-water discharge, or base flow, under the streamflow hydrograph. In the second method, the mean ground-water discharge is considered the effective recharge under long period of stream flow hydrograph and neglects the water balance of changes in storage.

並列關鍵字

Hydrograph ； Groundwater recharge ； The recession-curve-displacement method ； The method of base-flow-record estimation

國際替代計量

由河川流量資料與流量歷線推估中部地區地下水補注量

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