Consortium of Swiss Academic Libraries

The future of hydraulic tests

Renard, Philippe

In: Hydrogeology Journal, 2005, vol. 13, no. 1, p. 259-262

Université de Neuchâtel

Integrating aerial geophysical data in multiple-point statistics simulations to assist groundwater flow models

Dickson, N.E.M ; Comte, J.-C ; Renard, Philippe ; Straubhaar, J ; McKinley, J.M ; Ofterdinger, U

In: Hydrogeology Journal, 2015, vol. 23, no. 5, p. 883-900

The process of accounting for heterogeneity has made significant advances in statistical research, primarily in the framework of stochastic analysis and the development of multiple-point statistics (MPS). Among MPS techniques, the direct sampling (DS) method is tested to determine its ability to delineate heterogeneity from aerial magnetics data in a regional sandstone aquifer intruded by...

Université de Neuchâtel

Three-dimensional high resolution fluvio-glacial aquifer analog - Part 2: Geostatistical modeling

Comunian, Alessandro ; Straubhaar, Julien ; Renard, Philippe ; Bayer, P.

In: Journal of Hydrology, 2011, vol. 405, no. 1, p. 10

The heterogeneity of sedimentary structures at the decimeter scale is crucial to the understanding of groundwater flow and transport. In a series of two papers, we provide a detailed analysis of a fluvio-glacial aquifer analog: the Herten site. The geological data along a series of 2D sections in a quarry, the corresponding GPR measurements, and their sedimentological interpretation are described...

Université de Neuchâtel

Three-dimensional high resolution fluvio-glacial aquifer analog - Part 1: Field study

Bayer, P. ; Huggenberger, P. ; Renard, Philippe ; Comunian, Alessandro

In: Journal of Hydrology, 2011, vol. 405, no. 1, p. 1

Describing the complex structures that exist in many sedimentary aquifers is crucial for reliable groundwater flow and transport simulation. However, hardly any aquifer can be inspected in such detail that all decimeter to meter heterogeneity is resolved. Aquifer analogs serve as surrogates to construct models of equivalent heterogeneity, and thus imitate those features relevant for flow or...

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

The future of hydraulic tests

Renard, Philippe

In: Hydrogeology Journal, 2005, vol. 13, no. 1, p. 259-262

Université de Neuchâtel

Introducing wwhypda : a world-wide collaborative hydrogeological parameters database

Comunian, Alessandro ; Renard, Philippe

In: Hydrogeology Journal, 2009, vol. 17, no. 2, p. 481-489

Depuis la publication des travaux originaux de Henry Darcy (datés 1880) de très nombreuses valeurs de propriétés physiques des roches (conductivité hydraulique, perméabilité, compressibilité, porosité, etc.) ont été obtenues expérimentalement et publiées. Ces données sont toutefois dispersées et donc difficiles d’accès. Pour palier à ce problème et pour ainsi faciliter la...

Université de Neuchâtel

Deterministic and probabilistic numerical modelling towards sustainable groundwater management : application to seawater intrusion in the Korba aquifer (Tunisia)

Kerrou, Jaouher ; Renard, Philippe (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2008 ; Th. 2053.

This PhD endeavours numerical groundwater modelling considering heterogeneous and uncertain hydraulic parameters. It is made of three parts. First, we investigated the effects of dimensionality and heterogeneity of the hydraulic conductivity on dispersive seawater intrusion (SWI) processes. Multiple 2D and 3D unconditional simulations of hydraulic conductivity fields sharing the same statistics...