Applicability of different hydraulic parameters to describe soil detachment in eroding rills.

ABSTRACT: This study presents the comparison of experimental results with assumptions used in numerical models. The aim of the field experiments is to test the linear relationship between different hydraulic parameters and soil detachment. For example correlations between shear stress, unit length shear force, stream power, unit stream power and effective stream power and the detachment rate does not reveal a single parameter which consistently displays the best correlation. More importantly, the best fit does not only vary from one experiment to another, but even between distinct measurement points. Different processes in rill erosion are responsible for the changing correlations. However, not all these procedures are considered in soil erosion models. Hence, hydraulic parameters alone are not suff

SUBMITTER: Wirtz S 

PROVIDER: S-EPMC3663750 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature