Verification of experimental saltwater intrusion interface in unconfined coastal aquifers using numerical and analytical solutions

IF 0.8 Q4 WATER RESOURCES
Sobhy R. Emara, Asaad M. Armanuos, Tamer A. Gado, Bakenaz A. Zeidan
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引用次数: 1

Abstract

Saltwater intrusion (SWI) is a widespread environmental problem that poses a threat to coastal aquifers. To address this issue, this research employs both numerical and experimental methods to study saltwater intrusion under the impact of sea level rise and varying freshwater boundary conditions in two homogeneous aquifers. The study compares transient numerical groundwater heads and salt concentrations to experimental results under receding-front and advancing front conditions. In the low permeability aquifer, the root mean square error is 0.33 cm and the R2 is greater than 0.9817. Similarly, in the high permeability aquifer, the root mean square error is 0.92 cm and the R2 is greater than 0.9335. The study also compares the results of ten experimental tests for steady-state saltwater intrusion wedge and toe length with seven different analytical solutions. The experimental results are then compared to these analytical solutions to find the most suitable equation. The Rumer and Harleman equation shows good agreement with experimental saltwater intrusion wedge, while the Anderson equation is a good fit for saltwater intrusion toe length. Overall, this research provides valuable insights into saltwater intrusion in coastal aquifers, and the findings can be used to inform policies and management strategies to mitigate the negative impacts of saltwater intrusion. The investigation shed light on how inland water head and Sea Level Rise (SLR) affect SWI behavior.
用数值解和解析解验证沿海无约束含水层试验盐水入侵界面
咸水入侵(SWI)是一个广泛存在的环境问题,对沿海含水层构成威胁。为了解决这一问题,本研究采用数值和实验相结合的方法,研究了海平面上升和不同淡水边界条件下两个均匀含水层的盐水入侵。研究了退锋和进锋条件下瞬态地下水水头和盐浓度数值与试验结果的比较。在低渗透含水层中,均方根误差为0.33 cm, R2大于0.9817。同样,在高渗透含水层中,均方根误差为0.92 cm, R2大于0.9335。采用7种不同的解析解,对10种稳态盐水侵入楔和趾长试验结果进行了比较。然后将实验结果与解析解进行比较,找出最合适的方程。Rumer和Harleman方程与实验盐水入侵楔形吻合较好,Anderson方程与实验盐水入侵趾长吻合较好。总的来说,本研究为沿海含水层的盐水入侵提供了有价值的见解,研究结果可用于为减轻盐水入侵的负面影响的政策和管理策略提供信息。调查揭示了内陆水头和海平面上升(SLR)如何影响SWI行为。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
1.80
自引率
50.00%
发文量
36
审稿时长
8 weeks
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