This study demonstrates that the utility of simultaneous-equation analysis is limited for fluvial systems by inherent multicollinearity among hydrologic and morphologic variables.
Modelling sediment transport from bare rilled hillslopes by areally averaged transport equations
Treating the dynamics of sediment transport as two-dimensional on interrill-areas and as one-dimensional in rill sections, areally averaged sheet sediment transport (SST) equations are developed. The two-dimensional SST equation is averaged over
an individual interrill-area width and then along the interrill-area length to obtain local-scale areally averaged interrill-area sheet sediment transport equation (local-scale areal averaging). Similarly, the cross-sectional-averaged rill sediment transport
equation is averaged along an individual rill length to obtain local-scale areally averaged rill sediment transport equation.
THE ASSESSMENT OF REGIONAL GROUNDWATER SCHEMES BY RIVER-FLOW REGRESSION EQUATIONS
LES CHANGEMENTS ARTIFICIELS SURVENANT DANS L'ECOULEMENT FLUVIAL, TELS CEUX CAUSES PAR LE POMPAGE DE L'EAU SOUTERRAINE, PEUVENT ETRE ETABLIS A PARTIR D'EQUATIONS DE REGRESSION SUR L'ECOULEMENT. L'EXPERIENCE FAITE SUR BON NOMBRE DE POMPAGES A MONTRE
QUE L'INTENSITE DU POMPAGE EST FONCTION DE L'ERREUR TYPE D'ESTIMATION DE L'EQUATION UTILISEE POUR RECONSTITUER L'ECOULEMENT NATUREL.
Solution of the linear diffusion equation for modelling erosion processes with a time varying diffusion coefficient
In this paper, the analytical expression of the solution of the differential equation of the erosion process (diffusion equation) is found and the behaviour of this solution in the spatial and wave number domains is studied. The theoretical
Use and misuse of the K factor equation in soil erosion modeling: An alternative equation for determining USLE nomograph soil erodibility values
The K factor of the Universal Soil Loss Equation is the most important measure of soil erodibility that was adopted in many erosion models. The K factor can be estimated from simple soil properties by a nomograph. Later, the classical K factor
equation was published to assist the calculation of K. This equation, however, does not fully agree with the nomograph, which still has to be used in these deviating cases. Here the AA. show for a large soil data set from Central Europe (approximately
20,000 soil analyses) that the equation fails in considerably more than 50% of all cases. The failure can be large and may amount to half of the K factor. To facilitate the K factor calculation, the AA. developed a set of equations that fully emulates
This paper recommends use of the Thompson and Campbell (1979) modification of the basic Keulegan flow resistance equation because it fits the data as well as any other, whilst covering a more comprehensive range of flow conditions.
Applicability of the modified universal soil loss equation in small carpathian watersheds in Arid and semi-arid environments. Geomorphological and pedological aspects.
Data from six small watersheds in Polish Carpathians has been used to establish the parameters and of the Modified Universal Soil Loss Equation. Results of the study have shown a tendency for the MUSLE to overpredict sediment yields from