Author(s): H. Q. Huang; Gerald C. Nanson
Linked Author(s): Gerald Nanson
Keywords: No Keywords
Abstract: The channel geometry of alluvial streams is controlled by several factors in addition to flow discharge. An attempt to investigate the applicability of the multivariate model proposed by Huang and Warner (1995) demonstrates clearly that this model can satisfactorily quantify the influence of bank vegetation on channel geometry. Channel size is mainly determined by hydraulic conditions (discharge, roughness and slope), while channel shape (W/D) is largely controlled by bank materials and flow discharge. It appears that the regime theory developed in stable canals by engineers, and the minimum variance theory and the downstream hydraulic geometry used for natural streams by geomorphologists, are the simplified cases of this more complex multivariate model.
Year: 1995