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Faculty of Science, Medicine and Health - Papers: part A

1992

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A Genetic Classification Of Floodplains, G C. Nanson, J C. Croke Jan 1992

A Genetic Classification Of Floodplains, G C. Nanson, J C. Croke

Faculty of Science, Medicine and Health - Papers: part A

Floodplains are formed by a complex interaction of fluvial processes but their character and evolution is essentially the product of stream power and sediment character. The relation between a stream's ability to entrain and transport sediment and the erosional resistance of floodplain alluvium that forms the channel boundary provides the basis for a genetic classification of floodplains. Three classes are recognised: (1) high-energy non-cohesive; (2) medium-energy non-cohesive; and (3) low-energy cohesive floodplains. Thirteen derivative orders and suborders, ranging from confined, coarse-grained, non-cohesive floodplains in high-energy environments to unconfined fine-grained cohesive floodplains in low-energy environments, are defined on the basis ...