Sequential erosion/deposition experiments—demonstrating the effects of depositional history on sediment erosion

Experiments on the erosion of a bed of kaolinite were carried out in a rotating circular flume. Each experiment was carried out using the stratified bed which resulted from the previous experiment. Changes in suspended sediment concentrations during the experiments were explained by the history of t...

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Bibliographic Details
Published in:Water research (Oxford) 2001-08, Vol.35 (11), p.2767-2773
Main Authors: Lau, Y.L, Droppo, I.G, Krishnappan, B.G
Format: Article
Language:English
Subjects:
Chemical Precipitation
circular flume
Conservation of Natural Resources
deposition
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
erosion
Exact sciences and technology
Flocculation
Geologic Sediments - analysis
Hydrology
Hydrology. Hydrogeology
Kaolin - analysis
Pollution, environment geology
Soil Pollutants - analysis
Water Movements
Water Pollutants, Chemical - analysis
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Summary:Experiments on the erosion of a bed of kaolinite were carried out in a rotating circular flume. Each experiment was carried out using the stratified bed which resulted from the previous experiment. Changes in suspended sediment concentrations during the experiments were explained by the history of the deposition. The sequence of experiments showed how the rate of erosion and the amount eroded reflected the structure of the bed and that of the individual flocs which created it. Results suggest that modelling of sediment/contaminant transport needs to account for the manner in which deposition took place.
ISSN:0043-1354
1879-2448
DOI:10.1016/S0043-1354(00)00559-5