Insights From a Multi-Method Recharge Estimation Comparison Study.
Insights From a Multi-Method Recharge Estimation Comparison Study.
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DOI：
10.1111/gwat.12801
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发表时间：
2019-03
期刊：
影响因子：
2.6
通讯作者：
Yimam AY
中科院分区：
文献类型：
--
作者：
Walker D;Parkin G;Schmitter P;Gowing J;Tilahun SA;Haile AT;Yimam AY
尽管大多数补给估计研究采用多种方法来确定补给值的可能范围，但许多研究没有充分区分方法的固有不确定性和影响结果的其他因素。除了表征不确定性外，我们还研究了通过对水文地质的理解，从多方法补给研究中获得的附加价值。针对埃塞俄比亚西北部浅层地下水资源开发潜力，采用了9种不同的地下水补给估算方法，共17种变化。这些提供了从45到814毫米/a的广泛回灌值。关键评价表明，结果取决于补给代表什么（实际补给、潜在补给、最小补给或含水层储量变化）、时空尺度以及每种方法应用的不确定性。从详细的分析中获得了对水文地质系统的重要见解，也证实了实际回灌的值范围减少到280 - 430毫米/年左右。这项研究表明，即使违反了方法背后的假设，特别是在数据有限的情况下，它们在某种程度上经常被违反，也可以从多种方法的应用中获得对水文地质系统的宝贵见解。文章影响说明：对常用补给方法的分析表明，提取额外信息对提高水文地质认识具有重要价值。
Although most recharge estimation studies apply multiple methods to identify the possible range in recharge values, many do not distinguish clearly enough between inherent uncertainty of the methods and other factors affecting the results. We investigated the additional value that can be gained from multi‐method recharge studies through insights into hydrogeological understanding, in addition to characterizing uncertainty. Nine separate groundwater recharge estimation methods, with a total of 17 variations, were applied at a shallow aquifer in northwest Ethiopia in the context of the potential for shallow groundwater resource development. These gave a wide range of recharge values from 45 to 814 mm/a. Critical assessment indicated that the results depended on what the recharge represents (actual, potential, minimum recharge or change in aquifer storage), and spatial and temporal scales, as well as uncertainties from application of each method. Important insights into the hydrogeological system were gained from this detailed analysis, which also confirmed that the range of values for actual recharge was reduced to around 280‐430 mm/a. This study demonstrates that even when assumptions behind methods are violated, as they often are to some degree especially when data are limited, valuable insights into the hydrogeological system can be gained from application of multiple methods. Article impact statement: Analysis of common recharge methods shows the value of extracting additional information to improve hydrogeological understanding.
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影响因子：
2.3
作者：
Afrifa, George Yamoah;Sakyi, Patrick Asamoah;Chegbeleh, Larry Pax
通讯作者：
Chegbeleh, Larry Pax
影响因子：
1.9
作者：
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通讯作者：
Bewket, Woldeamlak
影响因子：
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作者：
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通讯作者：
Villholth, K. G.
影响因子：
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作者：
Bathurst, James C.;Birkinshaw, Steve J.;Sarandon, Ramiro
通讯作者：
Sarandon, Ramiro
影响因子：
2.8
作者：
Healy, RW;Cook, PG
通讯作者：
Cook, PG