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(Article of periodic en Anglais - 2013)

Document title

Effects of hydrophobicity on splash erosion of model soil particles by a single water drop impact

Authors(s) and Affiliation(s)

AHN S. (1) ; DOERR S.H. (1) ; DOUGLAS P. (2) ; BRYANT R. (2) ; HAMLETT C.A.E. (3) ; MCHALE G. (4) ; NEWTON M.I. (3) ; SHIRTCLIFFE N.J. (5) ;
(1) Dept. of Geography, College of Science, Univ., Swansea, ROYAUME-UNI
(2) Chemistry Group, College of Engineering, Univ., Swansea, ROYAUME-UNI
(3) School of Science and Technology, Nottingham Trent Univ., Nottingham, ROYAUME-UNI
(4) Fac. of Engineering and Environment, Univ., Newcastle upon Tyne, ROYAUME-UNI
(5) Technology and Bionics, Hochschule Rhein-Waal, Emmerich, ALLEMAGNE

Abstract

The effects of particle hydrophobicity on splash behaviour by a single water drop impact were examined here using high-speed videography. Water drops were dropped on beds of hydrophilic and hydrophobic glass beads, serving as model soil particles. The resulting impact behaviour was measured in terms of the trajectories of particles ejected from the beds and their final resting positions. The response to the impacting water drop was significantly different between hydrophilic and hydrophobic particles in terms of the distance distribution, the median distance travelled by the particles and number of ejected particles. The ~10% increase in average splash distance for hydrophobic particles compared with hydrophilic particles suggests that particle hydrophobicity can result in greater net erosion rate, which would be amplified on sloping surfaces, for example, by ridges in ploughed agricultural soils or hillslopes following vegetation loss by clearing or wildfire

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2013, vol. 38, no11 [pp. 1225-1233]

Bibliographic references : 1 p.

Collation : 8 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3364

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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