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Soil hydrophobicity effects on rainsplash: Simulated rainfall and photographic evidence
Author(s) -
Terry James P.,
Shakesby Richard A.
Publication year - 1993
Publication title -
earth surface processes and landforms
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.294
H-Index - 127
eISSN - 1096-9837
pISSN - 0197-9337
DOI - 10.1002/esp.3290180605
Subject(s) - splash , loam , soil water , environmental science , soil science , erosion , rill , sediment , hydrology (agriculture) , wetting , geotechnical engineering , geology , materials science , meteorology , geomorphology , physics , composite material
Laboratory rainfall simulation experiments indicate greater splash losses for hydrophobic (water repellent) than for wettable sandy loam soils at different rainfall intensities, durations and soil surface inclinations. Using synchronized video cameras with different shutter speeds and stroboscopically illuminated 35 mm still photography, differences in splash droplets and ejection trajectory characteristics are examined. For hydrophobic soil, raindrop impact gives rise to fewer, larger, slower‐moving daughter ejection droplets which carry more sediment and hence follow shorter range trajectories compared with wettable soil. Implications for erosion of hydrophobic soils are discussed.