Search results for "Rill limit"

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A Maximizing Hydraulic Radius (MHR) method for defining cross-section limits in rills and ephemeral gullies

2021

Abstract In this paper, a new method for determining the cross-section limits in rills and ephemeral gullies is proposed. This method is based on the estimate of the actual depth ha of each cross-section, which is the particular depth distinguishing the channel from the hillslope areas. The analysis showed that the actual depth corresponds to a particular bank slope sta occurring for the maximum value of the hydraulic radius R. The method was applied using a volumetric approach for calculating the hydraulic radius as the ratio between the volume of the whole investigated channel and its boundary lateral surface. The value of the bank slope st was derived by the DEM of the whole channel late…

Rill erosion010504 meteorology & atmospheric sciencesLateral surfaceScale (ratio)Ephemeral keyStructure from motionGeometry04 agricultural and veterinary sciencesRadiusRill limit01 natural sciencesField experimentCross section (physics)Volume (thermodynamics)040103 agronomy & agricultureErosion0401 agriculture forestry and fisheriesImage-based ground measurement techniqueSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-Forestali3D photo-reconstructionGeology0105 earth and related environmental sciencesEarth-Surface ProcessesCommunication channel

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