Université de Neuchâtel

Regional water quality patterns in an alluvial aquifer : Direct and indirect influences of rivers

Baillieux, Antoine ; Campisi, Diego ; Jammet, Nicolas ; Bucher, Samuel ; Hunkeler, Daniel

In: Journal of Contaminant Hydrology, 2014, vol. 169, p. 123-131

The influence of rivers on the groundwater quality in alluvial aquifers can be twofold: direct and indirect. Rivers can have a direct influence via recharge and an indirect one by controlling the distribution of fine-grained, organic-carbon rich flood deposits that induce reducing conditions. These direct and indirect influences were quantified for a large alluvial aquifer on the Swiss Plateau...

Université de Neuchâtel

The modelling of soil-process functional units based on three-dimensional soil horizon cartography, with an example of denitrification in a riparian zone

Cosandey, Anne-Claude ; Guenat, Claire ; Bouzelboudjen, Mahmoud ; Maı̂tre, Véronique ; Bovier, Raphaël

In: Geoderma, 2003, vol. 112, no. 1-2, p. 111–129

This article aims to propose an approach for estimating the three-dimensional (3D) variability of denitrification. The concept of functional horizons is applied to the process of biological denitrification and 3D soil horizon cartography is used to estimate its spatial variation. On one hand, detailed fieldwork (186 pedological auger holes) was undertaken to map 3D horizon distribution within a...