Concept

Topsoil

Related publications (34)

3D zero-thickness coupled interface finite element: Formulation and application

In many fields of geotechnical engineering, the modelling of interfaces requires special numerical tools. This paper presents the formulation of a 3D fully coupled hydro-mechanical finite element of interface. The element belongs to the zero-thickness fami ...

Elsevier2015

Thermal energy in dry snow avalanches

Michael Lehning, Walter Steinkogler

Avalanches can exhibit many different flow regimes from powder clouds to slush flows. Flow regimes are largely controlled by the properties of the snow released and entrained along the path. Recent investigations showed the temperature of the moving snow t ...

Copernicus Gesellschaft Mbh2015

Lightning Electromagnetic Fields and Their Induced Currents on Buried Cables. Part II: The Effect of a Horizontally Stratified Ground

Mario Paolone, Keyhan Sheshyekani

We use a finite element method (FEM) to evaluate the effect of a horizontally stratified two-layer ground on underground lightning electromagnetic fields and their induced currents on the shield of buried cables. It is shown that the azimuthal component of ...

Ieee-Inst Electrical Electronics Engineers Inc2014

Evaluation of Lightning-Induced Currents on Cables Buried in a Lossy Dispersive Ground

Mario Paolone, Keyhan Sheshyekani, Abdenabi Mimouni

The paper discusses the effect of frequency dependence of soil electrical parameters (also called soil dispersion) on lightning currents induced on the shield of buried cables. To this aim, a full-wave approach based on the finite element method is used in ...

2014

A mechanistic approach to topsoil damage due to slip of tractor tyres

Lyesse Laloui, Andrea Battiato, Etienne Diserens

Tractor traction tyres interact with soil by a system of normal and tangential stresses along the soil-tyre contact surface. In this interaction both soil and tyre deform according to their own stress-strain relationships. Soil deformation results in the f ...

2013

Evaluation of Lightning Electromagnetic Fields and Their Induced Voltages on Overhead Lines Considering the Frequency Dependence of Soil Electrical Parameters

Mario Paolone, Carlo Alberto Nucci, Keyhan Sheshyekani

This paper presents a comprehensive study on the effect of the frequency dependence of soil electrical parameters on the lightning radiated electromagnetic fields as well as their associated induced voltages on overhead lines. To this aim, a fullwave appro ...

Institute of Electrical and Electronics Engineers2013

Estimation of rainfall-driven soil erosion from different rainfall intensities, exposed areas and initial soil conditions

David Andrew Barry, Seifeddine Jomaa

The factors influencing the rain-splash soil erosion include rainfall characteristics, area exposed to raindrops and soil properties. Understanding of these factors and of their interactions is crucial for better predictions of soil erosion yields. To this ...

2013

Laboratory flume experiments to study the influence of initial conditions and rock fragment cover on soil erosion dynamics

David Andrew Barry, Alessandro Brovelli, Seifeddine Jomaa

The influence of the initial soil surface characteristics and rock fragment coverage on precipitation-driven soil erosion was investigated through laboratory experiments on a 6-m × 1-m soil parcel with mild slope. A sequence of four experiments, consisting ...

2012

Soil erosion dynamics through multiple rainfall events

David Andrew Barry, Alessandro Brovelli, Seifeddine Jomaa

The dynamics of soil erosion during repeated rainfall events was studied, in particular focusing on the effect of initial soil characteristics and surface shielding by rock fragments. A sequence of four 2-h erosive events (named H7- E1, E2, and E3, respect ...

2012

Soil erosion and effluent particle size distribution under different initial conditions and rock fragment coverage

David Andrew Barry, Alessandro Brovelli, Seifeddine Jomaa

It is well known that the presence of rock fragments on the soil surface and the soil’s initial characteristics (moisture content, surface roughness, bulk density, etc.) are key factors influencing soil erosion dynamics and sediment delivery. In addition, ...

2012

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