Application of genetic algorithm for the groundwater management of a coastal aquifer

Pramada, S. K.; Mohan, S.; Sreejith, P.

doi:10.1080/09715010.2017.1378597

Cited by 9 publications

(2 citation statements)

References 10 publications

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“…At smaller aquifer scales, where the assumption of miscible freshwater and saltwater is needed, salinity constraints have been prescribed as salt concentration limits at control points, such as pumping wells or monitoring wells, which have required the use of variable density flow models that are more complex and computationally more expensive than sharp‐interface models (Christelis & Mantoglou, 2019). SWI constraints have also been applied indirectly on hydraulic head, by limiting, for example, seaward hydraulic gradients or the water table drawdown at given monitoring points (Karatzas & Dokou, 2015; Pramada et al., 2018; Yang et al., 2018). A third group of SWI constraints involves the economic aspects of management.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Impact of Seawater Intrusion on the Operation Cost of Groundwater Supply in Island Aquifers

Yu,

Baù,

Mayer

et al. 2023

Water Resources Research

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Managing fragile island freshwater resources requires identifying pumping strategies that trade off the financial cost of groundwater supply against controlling the seawater intrusion (SWI) associated with aquifer pumping. In this work, these tradeoffs are investigated through a sensitivity analysis conducted in the context of an optimization formulation of the groundwater management problem, which aims at minimizing the groundwater supply operation cost associated with groundwater pumping and desalination treatment, subject to constraints on SWI control, as quantified by the water table drawdown over the well (∆s), the reduction in freshwater volume (∆FV) in the aquifer, or the salt mass increase (∆SM) in the aquifer. This study focuses on a simplified two‐dimensional model of the San Salvador Island aquifer (Bahamas). Pumping strategies are characterized by the distance of the pumping system from the shoreline (WL), the abstraction screen depth (D) and overall pumping rate (Q), constituting the decision variables of the optimization problem. We investigate the impacts of pumping strategies on the operation cost, ∆s, ∆FV and ∆SM. Findings indicate increasing D or decreasing WL reduces ∆s, ∆FV and ∆SM, thus preserving the aquifer hydrogeologic stability, but also leads to extracting saltier groundwater, thus increasing the water treatment requirements, which have a strong impact on the overall groundwater supply cost. From a financial perspective, groundwater abstraction near the island center and at shallow depths seems the most convenient strategy. However, the analysis of the optimization constraints reveals that strategies where the pumping system approaches the island center tend to cause more severe SWI, highlighting the need to trade off groundwater supply cost against SWI control.

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Section: Introductionmentioning

confidence: 99%

Investigating the Impact of Seawater Intrusion on the Operation Cost of Groundwater Supply in Island Aquifers

Yu,

Baù,

Mayer

et al. 2023

Water Resources Research

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“…Factors such as precipitation, evaporation, and artificial mining can be regarded as inputs to the system, and the groundwater level can be regarded as the output of the system [ 2 ]. At the same time, due to the spatial variation of the aqueous system, there will be data variability in the actual research process, and some precise research methods often fall into a variety of dilemmas when describing the nonlinear relationship of groundwater systems [ 3 ]. Numerical methods can describe irregularly shaped regions and aquifers with heterogeneity, anisotropy, and complex boundary conditions, can deal with river infiltration, atmospheric precipitation replenishment, changes in the temporal and spatial distribution of various pumping, drainage and evaporation, so as to solve complex problems that are not easy to solve by other calculation methods; however, the numerical method as a distributed parameter model has high requirements on the quantity and accuracy of the data [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Genetic Algorithm in Multimedia Dynamic Prediction of Groundwater in Open-Pit Mine

Zhang

Chen

Zhang

et al. 2022

Computational Intelligence and Neuroscience

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This study is aiming at the nonlinear mapping relationship between the groundwater level and its influencing factors. Through the design and calculation process of matlab7 platform, taking the monitoring wells distributed in an open-pit mining area as an example, the short-term prediction of groundwater dynamics in the study area is carried out by using BP neural network model and BP neural network model based on genetic algorithm. Root mean squared error (RMSE), Mean absolute percent-age error (MAPE) and Nash–Sutcliffe efficiency (NSE) are used coefficients,, and the results were compared with BP neural network and stepwise regression model. From the results of the comparative analysis, the genetic algorithm optimized the BP neural network model in the training phase and the test phase, the RMSE was 0.25 and 0.36, the MAPE was 6.7 and 8.13%, and the NSE was 0.87 and 0.72, respectively. The BP neural network model optimized by genetic algorithm is obviously superior to the BP neural network model, which is an ideal prediction model for short-term groundwater level. This model can provide a prediction method for groundwater dynamic prediction and has a good application prospect.

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Evaluating parameter inversion efficiency in Heterogeneous Groundwater models using Karhunen-Loève expansion: a comparative study of genetic algorithm, ensemble smoother, and MCMC

Wang,

Yue,

Wang

2024

Earth Sci Inform

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Application of genetic algorithm for the groundwater management of a coastal aquifer

Cited by 9 publications

References 10 publications

Investigating the Impact of Seawater Intrusion on the Operation Cost of Groundwater Supply in Island Aquifers

Investigating the Impact of Seawater Intrusion on the Operation Cost of Groundwater Supply in Island Aquifers

Genetic Algorithm in Multimedia Dynamic Prediction of Groundwater in Open-Pit Mine

Evaluating parameter inversion efficiency in Heterogeneous Groundwater models using Karhunen-Loève expansion: a comparative study of genetic algorithm, ensemble smoother, and MCMC

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