Experimental Study of Processes and Particle‐Size Distributions of Eroded Soil
Publication: Journal of Irrigation and Drainage Engineering
Volume 119, Issue 2
Abstract
The study presented here consists of rainfall‐runoff events produced with a large rainfall simulator. Three test plots were 2.44 m wide, with lengths of 6.1 m, 13.72 m, and 24.38 m, and a slope of 2%. The soil on the plots was loamy sand. Rainfall intensities of 44 mm/h, 79 mm/h, and 160 mm/h were run for 1 h for each test. Samples of the runoff were analyzed for sediment particle‐size distribution, which led to several conclusions about the processes governing the erosion rates. Transport capacity tended to limit the erosion rate of larger particles, and supply limited the erosion rate of smaller particles. The data demonstrate that evaluating a single detachment or transport rate and assuming that it is constant for a season, or even a storm, may not always produce accurate results. The variations of these rates, due to armoring, must be taken into consideration.
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Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 119 • Issue 2 • March 1993
Pages: 383 - 398
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: Dec 23, 1991
Published online: Mar 1, 1993
Published in print: Mar 1993
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