在不同的模型复杂性和目标函数组合下估算埃塞俄比亚上阿瓦士盆地的地下水补给率

IF 2.7 4区 环境科学与生态学 Q2 Environmental Science
Muauz Amare Redda, Behailu Birhanu, Bediru Hussien
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引用次数: 0

摘要

地下水补给率的可靠量化对于地下水资源的可持续利用至关重要。然而,有关从模型复杂性和目标函数的不同组合角度估算补给率的不确定性的资料很少。因此,本研究旨在:(i) 分析模型参数在模型复杂性和目标函数不同组合下的敏感性;(ii) 针对目标函数和模型复杂性的不同组合,估算埃塞俄比亚上阿瓦士盆地 Hombele 流域的地下水补给率。对 1986-2013 年期间这些模型复杂性在估算地下水补给率和参数化模型参数方面的影响进行了量化。分析共使用了 10 种模型复杂性和目标函数组合。当采用半分布式 HBVlight 模型时,校准、验证和整个期间的 Kling-Gupta 效率(Nash-Sutcliffe 效率)值分别为 0.89 (0.80)、0.80 (0.73) 和 0.87 (0.77)。对于所有目标函数,我们发现,当 HBV-light 模型被视为半分布模型时,研究流域的年平均补给率在 185.9 至 280.5 毫米之间。相比之下,将 HBV light 模型作为一个整体模型时,年平均补给率在 185.3 至 321.7 毫米之间。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Estimating groundwater recharge rates in the Upper Awash Basin, Ethiopia under different combinations of model complexity and objective functions
Reliable quantification of groundwater recharge rate is crucial for the sustainable utilization of groundwater resources. However, little information is documented about the uncertainty associated with recharge rate estimation from the different combinations of model complexity and objective function perspectives. Therefore, this study aims to (i) analyze the sensitivity of the model parameters under different combinations of model complexities and objective functions and (ii) estimate the groundwater recharge rate in the Hombele catchment, Upper Awash Basin, Ethiopia, for different combinations of objective functions and model complexities. The effect of these model complexities in estimating groundwater recharge rate and parametrizing model parameters was quantified for the period 1986–2013. A total of 10 combinations of model complexities and objective functions were used for the analysis. The Kling–Gupta efficiency (Nash–Sutcliffe efficiency) values for calibration, validation, and the whole period are 0.89 (0.80), 0.80 (0.73), and 0.87 (0.77), respectively, when a semi-distributed HBV-light model was used. For all objective functions, we found that the average annual recharge rate of the study catchment ranges from 185.9 to 280.5 mm when the HBV-light model was considered as a semi-distributed model. In contrast, the average annual recharge rate ranges from 185.3 to 321.7 mm when applying the HBV-light model as a lumped model.
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来源期刊
Hydrology Research
Hydrology Research Environmental Science-Water Science and Technology
CiteScore
5.30
自引率
7.40%
发文量
70
审稿时长
17 weeks
期刊介绍: Hydrology Research provides international coverage on all aspects of hydrology in its widest sense, and welcomes the submission of papers from across the subject. While emphasis is placed on studies of the hydrological cycle, the Journal also covers the physics and chemistry of water. Hydrology Research is intended to be a link between basic hydrological research and the practical application of scientific results within the broad field of water management.
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