Using groundwater levels to estimate recharge
Using groundwater levels to estimate recharge
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DOI：
10.1007/s10040-001-0178-0
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发表时间：
2002-02-01
影响因子：
2.8
通讯作者：
Cook, PG
中科院分区：
文献类型：
--
作者：
Healy, RW;Cook, PG
准确估算地下水补给量对地下水系统的合理管理至关重要。有许多不同的估算充值的方法。本文综述了基于地下水位数据的方法。地下水位波动法可能是估算补给最广泛使用的技术；它需要了解具体的产量和水位随时间的变化。这种方法的优点包括其简单性和对水通过非饱和带的机制不敏感。这种方法产生的估算中的不确定性与确定特定产量的有限精度以及方法中固有假设的有效程度有关。本文还描述了其他使用水位（主要基于达西方程）的方法。解释了这些方法背后的理论。从文献中的例子来说明不同方法的应用。
Accurate estimation of groundwater recharge is extremely important for proper management of groundwater systems. Many different approaches exist for estimating recharge. This paper presents a review of methods that are based on groundwater-level data. The water-table fluctuation method may be the most widely used technique for estimating recharge; it requires knowledge of specific yield and changes in water levels over time. Advantages of this approach include its simplicity and an insensitivity to the mechanism by which water moves through the unsaturated zone. Uncertainty in estimates generated by this method relate to the limited accuracy with which specific yield can be determined and to the extent to which assumptions inherent in the method are valid. Other methods that use water levels (mostly based on the Darcy equation) are also described. The theory underlying the methods is explained. Examples from the literature are used to illustrate applications of the different methods.