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Reduced raindrop-impact driven soil erosion by infiltration


Walker, Jeffrey D; Walter, M Todd; Parlange, Jean-Yves; Rose, Calvin Wyatt; Tromp-van Meerveld, H J; Gao, Bin; Cohen, Aliza M (2007). Reduced raindrop-impact driven soil erosion by infiltration. Journal of Hydrology, 342(3-4):331-335.

Abstract

We used a simple laboratory experiment to investigate whether infiltration influences raindrop-impact induced soil erosion. There was substantially less erosion under infiltration conditions than with no infiltration. This was because a "shield" layer of deposited particles developed more rapidly under infiltration compared to "no-infiltration" conditions. Interestingly, the "shield" depth that fully protected the underlying soil from raindrop-impacts was shallower under infiltrating conditions. We found that the Rose soil erosion model captured the erosion dynamics well (R² ≈ 0.9). Predicting the "full-shield" depth remains unresolved. These results add evidence to previous studies indicating that saturated, slowly draining areas in the landscape are particularly susceptible to soil erosion from raindrop impact.

Abstract

We used a simple laboratory experiment to investigate whether infiltration influences raindrop-impact induced soil erosion. There was substantially less erosion under infiltration conditions than with no infiltration. This was because a "shield" layer of deposited particles developed more rapidly under infiltration compared to "no-infiltration" conditions. Interestingly, the "shield" depth that fully protected the underlying soil from raindrop-impacts was shallower under infiltrating conditions. We found that the Rose soil erosion model captured the erosion dynamics well (R² ≈ 0.9). Predicting the "full-shield" depth remains unresolved. These results add evidence to previous studies indicating that saturated, slowly draining areas in the landscape are particularly susceptible to soil erosion from raindrop impact.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Geography
Dewey Decimal Classification:910 Geography & travel
Language:English
Date:2007
Deposited On:22 May 2015 13:56
Last Modified:18 Feb 2018 13:16
Publisher:Elsevier
ISSN:0022-1694
OA Status:Closed
Publisher DOI:https://doi.org/10.1016/j.jhydrol.2007.06.003

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