Concept

Conservation des sols

Publications associées (69)

Analysis and design of an innovative solution for tunnels using elastic-plastic stress fields

For the conception of cut-and-cover tunnel, two solutions are usually considered to define the cross-section : an arch/vault or a frame. The vault enables an optimal static behavior in case of a large soil cover and symmetric loads. However, this solution ...

Proceeding of the 8th fib-PhD Symposium2010

Stochastic modeling of soil salinity

Andrea Rinaldo, Samir Suweis, Amos Maritan

A minimalist stochastic model of primary soil salinity is proposed, in which the rate of soil salinization is determined by the balance between dry and wet salt deposition and the intermittent leaching events caused by rainfall events. The long term probab ...

American Geophysical Union2010

On the Diurnal Soil Water Content Dynamics during Evaporation using Dielectric Methods

Marc Parlange, Ivan Lunati, Scott W. Tyler

The water content dynamics in the upper soil surface during evaporation is a key element in land–atmosphere exchanges. Previous experimental studies have suggested that the soil water content increases at the depth of 5 to 15 cm below the soil surface duri ...

2010

Rainfall thresholds for shallow landslides based on a numerical analysis

Lyesse Laloui, Alessio Ferrari, John Eichenberger

Shallow landslides in Alpine regions frequently occur during heavy precipitation events or extremely fast snow melting processes. Early-warning is mostly based on simple empirical rainfall intensity and duration curves indicating probable critical climatic ...

CERG Editions2010

Effect of raindrop splash and transversal width on soil erosion: Laboratory flume experiments and analysis with the Hairsine-Rose model

David Andrew Barry, Alessandro Brovelli, Seifeddine Jomaa

The parameter consistency of the one-dimensional Hairsine-Rose (H-R) erosion model under conditions of significant rainfall splash was examined. To account for the splash characteristic length scale and its interaction with the transverse erosion width, ex ...

2010

Soil erosion under multiple time-varying rainfall events

David Andrew Barry, Seifeddine Jomaa

Soil erosion is a function of many factors and process interactions. An erosion event produces changes in surface soil properties such as texture and hydraulic conductivity. These changes in turn alter the erosion response to subsequent events. Laboratory- ...

2010

Carbon, oxygen and nitrogen dynamics in a soil profile: Model development and application

David Andrew Barry, Alessandro Brovelli, Jordi Batlle-Aguilar

In order to meet demands for crops, pasture and firewood, the rate of land use change from forested to agricultural uses steadily increased over several decades, resulting in an increased release of nutrients towards groundwater and surface water bodies. I ...

2009

Effects of crab burrows on pore water flows in salt marshes

David Andrew Barry

Macro-pores such as crab burrows are found commonly distributed in salt marsh sediments. Their disturbance on the soil structure is likely to influence both pore water flows and solute transport in salt marshes; however, the effects of crab burrows are not ...

2009

Capillary phenomena in liquid composite moulding

Véronique Michaud

In liquid composite moulding, capillary phenomena take place as the fibre/air interface is progressively replaced by the fibre/resin interface. These effects are often neglected when computing the flow front progression into the fibre preform, because the ...

2007

Quantifying evaporation drying front dynamics using neutron radiography

Dani Or, Nima Shokri

Soil evaporation plays an important role in the hydrologic cycle and affects near surface energy balance. Changes in evaporative drying rates reflect complex interplay between soil pore space and transport properties and atmospheric conditions. Typically, ...

2006

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