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The measurement and modelling of rill erosion at angle of repose slopes in mine spoil

Auteur(s) et Affiliation(s)

HANCOCK, G.R.
School of Environmental and Life Sciences, Univ. of Newcastle, Callaghan, Australie
CRAWTER, D.
School of Engineering, Univ. of Newcastle, Callaghan, Australie
FITYUS, S.G.
School of Engineering, Univ. of Newcastle, Callaghan, Australie
CHANDLER, J.
Dept. of Civil and Building Engineering, Univ., Loughborough, Royaume-Uni
WELLS, T.
School of Engineering, Univ. of Newcastle, Callaghan, Australie


Description :
This study examines the ability of a terrestrial laser scanner to quantify rills that have developed on fresh and homogeneous mine spoil on an angle of repose slope. It also examines the ability of the SIBERIA erosion model to simulate the rill's spatial and temporal behaviour. Results show that while the overall hillslope morphology was captured by the laser scanner, with the morphology of the rills being broadly captured, the characteristics of the rills were not well defined. These results demonstrate that an even greater density of points is needed to capture sufficient rill morphology. Nevertheless, SIBERIA simulations of the hillslope demonstrated that the model was able to capture rill behaviour in both space and time when correct model parameters were used. The results demonstrate the sensitivity of the model to changes in parameters and the importance of the calibration process.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2008, vol. 33, n°. 7, p. 1006-1020, nombre de pages : 15, Références bibliographiques : 2 p.

Date :
2008

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley

Langue :
Anglais
Droits :
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