Uncertainty in modelling the detachment of soil by rainfall
Rainfall simulation in geomorphology
England ; Model ; Modelling ; Precipitation ; Rainfall simulation ; Reliability ; Research technique ; Soil erosion ; Splash ; United Kingdom
The AA. show that rainfall kinetic energy (and hence soil detachment) does not bear a simple relationship to intensity. For low-intensity rainfall, observed variations in drop-size distributions indicate that soil detachment, at a given rainfall
intensity, may vary by about a factor of two. Comparable estimates of variation in soil detachment at high rainfall intensity are not possible because of a dearth of observational data on variation in drop-size distributions in high-intensity rainfall
. Variation in drop-size distributions in natural rainfall may, therefore, account for a significant component of differences between observed soil detachment and that predicted by models of soil erosion.
Spatial and temporal variation in two rainfall simulators : implications for spatially explicit rainfall simulation experiments
Rainfall simulation in geomorphology
Comparative study ; England ; Experimentation ; Model ; Monte Carlo analysis ; Rainfall simulation ; Research technique ; Soil erosion ; Spatial variation ; Stochastic model ; United Kingdom ; Water erosion
Rainfall simulators are widely used yet there is little evidence in the literature to show that their spatial and temporal variability has been adequately taken into account. A first aim of this paper is therefore to examine this variability
, and to appraise methodologies by which it may be quantified. A second aim is to evaluate the implications for spatially explicit rainfall simulation experiments.
Post-mining landform evolution modelling : 1. Derivation of sediment transport model and rainfall-runoff model,parameters
Rainfall simulation in geomorphology
This paper reports the results of natural rainfall monitoring and the derivation of sediment transport model and distributed parameter Field-Williams (DISTFW) rainfall-runoff model parameter values for an unvegetated, unripped waste rock dump (WRD
Drip-screen rainfall simulators for hydro- and pedo- geomorphological research : the Coventry experience
Rainfall simulation in geomorphology
Cultivated land ; England ; Erodibility ; Experimentation ; Land use ; Rainfall simulation ; Rill wash ; Slope ; Slope gradient ; Soil erosion ; Soil properties ; United Kingdom ; Urban area ; Water erosion
This paper describes the development of a laboratory-based drip-screen rainfall simulator at Coventry University and presents 7 case studies demonstrating its application. Experiments include an evaluation of the water balance of both agricultural
Relationship between raindrop erosion and runoff erosion under simulated rainfall in the Sudano-Sahel : consequences for the spread of nematodes by runoff
Rainfall simulation in geomorphology
Agricultural practice ; Carrying capacity ; Cultivated land ; Microrelief ; Rainfall simulation ; Rill wash ; Senegal ; Slope gradient ; Soil erosion ; Spatial distribution ; Splash ; Suspended load ; Water erosion
This paper presents a rainfall simulation experiment carried out on three 50 m2 plots in the Senegalese groundnut belt. The results indicate that the carrying capacity of the runoff at the scale of 10 m2, on gentle slopes ploughed perpendicular
The primary objectives of this initial study were to prepare sediment budgets for rill networks developed on a natural soil under simulated rainfall in a laboratory flume (University of Toronto, Scarborough), and identify the effect of confluences