Université de Neuchâtel

Stochastic forecasts of seawater intrusion towards sustainable groundwater management : application to the Korba aquifer (Tunisia)

Kerrou, Jaouher ; Renard, Philippe ; Cornaton, Fabien ; Perrochet, Pierre

In: Hydrogeology Journal, 2013, vol. 21, no. 2, p. 425-440

A stochastic study of long-term forecasts of seawater intrusion with an application to the Korba aquifer (Tunisia) is presented. Firstly, a geostatistical model of the exploitation rates was constructed, based on a multi-linear regression model combining incomplete direct data and exhaustive secondary information. Then, a new method was designed and used to construct a geostatistical model of the...

Université de Neuchâtel

Grid-enabled Monte Carlo analysis of the impacts of uncertain discharge rates on seawater intrusion in the Korba aquifer (Tunisia) = Utilisation d'une grille de calcul pour une analyse de Monte Carlo des impacts de l'incertitude liée aux débits d'exploitation sur l'intrusion marine dans l'aquifère de Korba (Tunisie)

Kerrou, Jaouher ; Renard, Philippe ; Lecca, Giuditta ; Tarhouni, Jamila

In: Hydrological Sciences Journal, 2010, vol. 55, no. 8, p. 1325-1336

L'aquifère de Korba, situé au nord de la Tunisie, est gravement touché par une salinisation du à l'intrusion marine. En 2000, l'aquifère a été exploité par plus de 9000 puits. Le problème, c'est qu'il n'y a pas d'information précise concernant les débits de pompage, leur répartition dans l'espace ainsi que leur évolution dans le temps. Dans cette étude, un modèle géostatistique...

Université de Neuchâtel

Status of the Korba groundwater resources (Tunisia): observations and three-dimensional modelling of seawater intrusion

Kerrou, Jaouher ; Renard, Philippe ; Tarhouni, Jamila

In: Hydrogeology Journal, 2010, vol. 18, no. 5, p. 1173-1190

The Korba aquifer is located in the east of the Cape Bon peninsula in Tunisia. A large groundwater depression has been created in the central part of the aquifer since the 1980s, due to intense groundwater pumping for irrigation. The data collected show that the situation continues to deteriorate. Consequently, seawater is continuing to invade a large part of the aquifer. To better understand the...

Université de Neuchâtel

A numerical analysis of dimensionality and heterogeneity effects on advective dispersive seawater intrusion processes

Kerrou, Jaouher ; Renard, Philippe

In: Hydrogeology Journal, 2010, vol. 18, no. 1, p. 55-72

Two-dimensional (2D) and 3D numerical simulations of the dispersive Henry problem show that heterogeneity affects seawater intrusion differently in 2D and 3D. When the variance of a multi-Gaussian isotropic hydraulic conductivity field increases, the penetration of the saltwater wedge decreases in 2D while it increases in 3D. This is due to the combined influence of advective and dispersive...

Université de Neuchâtel

Issues in characterizing heterogeneity and connectivity in non-multiGaussian media

Kerrou, Jaouher ; Renard, Philippe ; Hendricks Franssen, Harrie-Jan ; Lunatic, Ivan

In: Advances in Water Resources, 2008, vol. 31, no. 1, p. 147-159

The performances of kriging, stochastic simulations and sequential self-calibration inversion are assessed when characterizing a non-multiGaussian synthetic 2D braided channel aquifer. The comparison is based on a series of criteria such as the reproduction of the original reference transmissivity or head fields, but also in terms of accuracy of flow and transport (capture zone) forecasts when...