Downslope soil detachment–transport on steep slopes via rain splash

Ghahramani, Afshin and Ishikawa, Yoshiharu and Gomi, Takashi and Miyata, Shusuke (2011) Downslope soil detachment–transport on steep slopes via rain splash. Hydrological Processes, 25 (15). pp. 2471-2480. ISSN 0885-6087

Abstract

This study developed a one-dimensional model of downslope rain splash transport based on field experiments and previous studies. The developed model considers soil detachment processes, ground cover, probability densities, and the effect of overland run-off in preventing detachment. Field monitoring was conducted to observe precipitation run-off, ground cover, and sediment production on steep hillslopes. Field-observed data were used to develop the splash detachment rate equation, probability densities for splash transport, and the maximum splash transport distance. Observed and estimated splash transport showed overall agreement, with some differences for small storm events or events with relatively low intensity, probably caused by variation of overland run-off depth and connectivity as well as differences in soil surface cohesion at various degrees of wetness. Our model can provide insights on the interactions among rainfall intensity, soil surface condition, soil wetness, and splash transport on forested hillslopes.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version, in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Institute for Agriculture and the Environment
Date Deposited: 07 Nov 2016 23:57
Last Modified: 02 Mar 2017 05:16
Uncontrolled Keywords: rain splash transport; soil detachment; probability density function;overland flow; ground cover; forested hillslope
Fields of Research : 04 Earth Sciences > 0406 Physical Geography and Environmental Geoscience > 040608 Surfacewater Hydrology
04 Earth Sciences > 0406 Physical Geography and Environmental Geoscience > 040607 Surface Processes
04 Earth Sciences > 0406 Physical Geography and Environmental Geoscience > 040699 Physical Geography and Environmental Geoscience not elsewhere classified
05 Environmental Sciences > 0503 Soil Sciences > 050399 Soil Sciences not elsewhere classified
Identification Number or DOI: 10.1002/hyp.8086
URI: http://eprints.usq.edu.au/id/eprint/29953

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