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首页> 外文期刊>Journal of African Earth Sciences >Assessment of groundwater recharge in a semi-arid groundwater system using water balance equation, southern Iran
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Assessment of groundwater recharge in a semi-arid groundwater system using water balance equation, southern Iran

机译：使用水平衡方程评估半干旱地下水系统中的地下水补给，伊朗南部

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摘要

Estimation of the groundwater recharge is extremely important for the groundwater management in semiarid regions. A simple water balance equation is used for quantifying the total annual groundwater recharge during 8 water years (from 2002 to 2010) in the Burazjan aquifer, south Iran. Total annual groundwater recharge was estimated using two approaches: (1) sum of the known inflow components to the aquifer system, and (2) sum of outflow components from the aquifer and annual change in the aquifer storage. Comparison of the results from two approaches shows a considerable difference with an average of 91.30 million m~3/year for the annual recharge. This difference could be caused by (ⅰ) error in quantifying the inflow components and/or (ⅱ) missing an unknown inflow component. Sensitivity analysis reveals that the difference in the estimated annual recharge is more than the estimated 20% error in quantifying the components of the water balance equation. However, considering the geological setting and previous investigations, a missed inflow component related to Burazjan Fault is proposed. Contribution of this inflow component in annual groundwater recharge ranged from 33.25 to 132.90 with an average of 91.30 million m~3/year.
机译：估算地下水补给对于半干旱地区的地下水管理极为重要。一个简单的水平衡方程用于量化伊朗南部Burazjan含水层在8个水年（2002年至2010年）中的年度地下水补给总量。使用两种方法估算了每年的地下水总补给量：（1）已知到含水层系统的流入量总和，（2）含水层的流出量总和以及含水层存储量的年度变化。两种方法结果的比较显示出很大的差异，年补给量平均为9,130​​万立方米/年。这种差异可能是由（ⅰ）量化流入分量时的错误和/或（ⅱ）缺少未知的流入分量引起的。敏感性分析显示，在量化水平衡方程的组成部分时，估算的年度补给量的差异大于估算的20％的误差。但是，考虑到地质环境和先前的调查，提出了与Burazjan断层有关的漏入流分量。该流入量在每年地下水补给中的贡献范围为33.25至132.90，平均每年为9,130​​万立方米3。

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