Modeling Saltwater Intrusion into Groundwater Using a Prey–Predator Model

AbstractSaltwater intrusion in a coastal region is one of the major issues facing the agricultural, domestic, and industrial sectors. Groundwater withdrawal for an increasing population and agricultural and industrial demands are the main reasons for saltwater intrusion into coastal aquifers. Saltwa...

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Bibliographic Details
Published in:Journal of hydrologic engineering 2024-08, Vol.29 (4)
Main Authors: Samanta, Animesh, Chatterjee, Tapan, Mandal, Priyanka, Chatterjee, Ayan, Jha, Madan Kumar, Singh, Mritunjay Kumar
Format: Article
Language:English
Subjects:
Aquifers
Coastal aquifers
Coastal zone
Fresh water
Freshwater
Groundwater
Groundwater withdrawal
Inland water environment
Modelling
Population growth
Predator-prey simulation
Predators
Prey
Saline water
Saline water intrusion
Salt water intrusion
Saltwater intrusion
Technical Papers
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Summary:AbstractSaltwater intrusion in a coastal region is one of the major issues facing the agricultural, domestic, and industrial sectors. Groundwater withdrawal for an increasing population and agricultural and industrial demands are the main reasons for saltwater intrusion into coastal aquifers. Saltwater intrusion into freshwater aquifers directly affects a population’s health, economy, and social development. This study explores an innovative approach to modeling saltwater intrusion into freshwater using a prey–predator model. Freshwater is analogized as the prey and saltwater as the predator, providing a unique perspective on understanding this phenomenon. The present model was formulated using a balance of freshwater and saltwater and is applicable to coastal aquifers. An amount of freshwater withdrawal such that the volume of saltwater does not produce adverse impacts is predicted graphically. Based on a certain simulation, the current model suggests that if the withdrawal rate drops to 50%, freshwater is projected to surpass saltwater dominance for about 90 years. The model has been validated through a benchmark saltwater intrusion problem.
ISSN:1084-0699
1943-5584
DOI:10.1061/JHYEFF.HEENG-6071