Evaluation of strategies for pumping optimization of coastal aquifers using numerical simulation and game theory

Beheshti, Javid; Javadi, Saman; Hosseini, Seyed Abbas; Moghaddam, Hamid Kardan

doi:10.1007/s12665-022-10459-w

Cited by 6 publications

(1 citation statement)

References 45 publications

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“…It is important to note that we do not adopt any specific optimization algorithm to solve the formulated management problems. Instead, we design a large set of potential groundwater abstraction strategies, and by modeling the aquifer's responses to these strategies, we can identify the optimal pumping scheme and its associated management cost through full enumeration evaluation (e.g., Beheshti et al., 2022) within such a set when SWI control constraints are specified. Finally, by varying the variable bounds of these constraints, we can then identify various corresponding optimal pumping strategies.…”

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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Identification of deep Czech Republic–Austria transboundary aquifer discharge and associated river chloride loading

Chroustová,

Říčka,

Pasternáková

et al. 2024

Environ Earth Sci

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The deep transboundary aquifer of regional scale along the Czech Republic–Austria border in Central Europe serves as a thermal-mineral water resource for balneotherapy and plays an important role in the region’s development. The aquifer is composed mostly of Jurassic carbonates at depths from 160 to − 3000 masl. Despite more than two decades of exploitation, no complex analysis of groundwater flow directions and groundwater fluxes ever took place. Now, cross-border cooperation enabled the research team to gather crucial information on the Jurassic aquifer. For a better understanding of the groundwater flow system, a numerical model was developed. To simulate the effect of variable density and viscosity occurring in such a deep aquifer, the SEAWAT numerical model was used. The simulation shows that there is an inflow of low mineralised groundwater from the crystalline outcrops in the northwest and inflow of saline groundwater from southeast. Aquifer discharge was identified along the zone partly corresponding to the course of the Dyje River. To check the model’s accuracy, the river water was sampled together with streamflow measurements. Detected sections of increasing chloride concentration indicate zones of the Jurassic aquifer discharge into the Dyje River. The discharge rate of 85 L/s derived from streamflow and chloride concentrations matches the value computed by the model. The relatively high discharge of the Jurassic aquifer contributes significantly to the high chloride loading observed in the Dyje River.

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Predicting seawater intrusion in coastal areas using machine learning: A case study of arid coastal aquifers, Saudi Arabia

BinMakhashen,

Benaafi

2024

Groundwater for Sustainable Development

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Evaluation of strategies for pumping optimization of coastal aquifers using numerical simulation and game theory

Cited by 6 publications

References 45 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

Identification of deep Czech Republic–Austria transboundary aquifer discharge and associated river chloride loading

Predicting seawater intrusion in coastal areas using machine learning: A case study of arid coastal aquifers, Saudi Arabia

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