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Modeling saltwater upconing in coastal aquifers

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Published .
Written in English

Subjects:

  • Groundwater,
  • Saltwater encroachment,
  • Wells

Book details:

Edition Notes

Statementby Kodjo C. Koulekey
The Physical Object
Paginationxix, 247 leaves :
Number of Pages247
ID Numbers
Open LibraryOL25925619M
OCLC/WorldCa15987363

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Coastal aquifers serve as major sources for freshwater supply in many countries around the world, especially in arid and semi-arid zones. Many coastal areas are also heavily urbanized, a fact that makes the need for freshwater even more acute. Coastal aquifers are highly sensitive to disturbances. Inappropriate management of a coastal aquifer may lead to its destruction as a source for Reviews: 2. H.I. Essaid, A comparison of the coupled fresh water-salt water flow and the Ghyben-Herzberg sharp interface approaches to modeling of transient behavior in coastal aquifer systems, Journal of Hydrology, /(86), 86, , (), ().Cited by: Coastal aquifer management: monitoring, modeling, and case studies Alexander H.D. Cheng, Driss Ouazar Approximately 70% of the world's population lives in coastal areas, and the majority of these people depend on coastal aquifers for freshwater. Jialiang Cai, Thomas Taute, Michael Schneider, Saltwater Upconing Below a Pumping Well in an Inland Aquifer: a Theoretical Modeling Study on Testing Different Scenarios of Deep Saline-Groundwater Pathways, Water, Air, & Soil Pollution, /s, , 11, ().

Saltwater intrusion is a serious menace to the groundwater quality of several coastal aquifers around the world. Fundamental to controlling or reducing this intrusion is the determination of its spatial and temporal distribution. The sharp-interface and the density-dependent approaches are utilized for modeling saltwater intrusion. Abstract. Utilizing the analytical solution of the steady state sharp interface saltwater intrusion model in coastal aquifers, a multi-objective optimization formulation of pumping rates and well locations in a coastal aquifer is formulated to solve problems in water management practice.   The model parameters for a suite of axisymmetric and 3D numerical experiments are listed in Table 1.A base case was developed using parameters from Bear et al. () and Zhou et al. ().The base case represents an anisotropic confined aquifer of 80 m depth, with a well positioned 50 m above 20 m of saltwater and pumping at m 3 /d. For the 3D inclined interface base case, the . [9] In a steady state condition, the freshwater/saltwater interface is related only to the ratio of their respective densities, for freshwater and for saltwater. Hence, under equilibrium conditions, freshwater floats on top of salt water, forming a freshwater lens in islands and a wedge in coastal aquifers. Because saltwater is slightly.

2 Figure 1. Saltwater upconing beneath a well Several authors studied saltwater intrusion in coastal aquifers, such as Huyakorn et al.() who presented a numerical model based on the sharp interface approach and taking into account the flow dynamics of saltwater and freshwater. Coastal aquifers are susceptible to a variety of salt water intrusion forms, including lateral intrusion, upconing, and downward infiltration of brackish water. Recent advances in the development of practical integrated groundwater models make it possible to simulate these forms of salt water intrusion in support of coastal water supply.   Aharmouch A, Larabi A () Numerical modelling of saltwater interface upconing in coastal aquifers. In: Proceeding of the 1st international conference and workshop on saltwater intrusion and coastal aquifers, monitoring, modelling, and management Google Scholar. Saltwater Upconing in Unconfined Aquifers Finite element method with an iterative scheme is employed in solving the steady state model whereas a method of finite element in space and finite differences in time is used with iterative schemes for the transient model. Numerical Simulation of Saltwater Extraction Schemes to Mitigate.