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PORTAIL D'INFORMATION GÉOGRAPHIQUE

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  • Rill hydraulics on a semiarid hillslope, Southern Arizona
  • Arid area ; Arizona ; Channel geometry ; Gully erosion ; Methodology ; Rill wash ; Semi-arid area ; Slope ; United States of America
  • Seventy field experiments were conducted in seven rills located on a semiarid rangeland hillslope underlain by gravelly soils at Walnut Gulch, Arizona. A multiple regression analysis reveals that slope and soil materials, either directly
  • or indirectly through bed roughness, exert almost as much influence on flow velocity as does discharge. Three alternative methods ar developed for predicting flow velocity in the rills under study and give good results with the largest root mean square deviation.
  • Alluvial cone ; Arid area ; Model ; Piedmont ; Rill wash ; Rock ; Runoff ; Sediment transport ; Semi-arid area ; Slope
  • Carrying capacity ; Experimentation ; Grain size distribution ; Rill wash ; Roughness ; Runoff ; Sediment transport ; Slope
  • Arizona ; Grassland ; Plant canopy ; Rill wash ; Scrub ; Soil erosion ; Spatial variation ; United States of America ; Vegetation ; Watershed
  • Applied hydrology ; Carrying capacity ; Experimentation ; Regression analysis ; Rill wash ; Roughness ; Sediment transport ; Slope ; Slope gradient ; Soil erosion
  • Carrying capacity ; Experimentation ; Rainfall simulation ; Rill wash ; Roughness ; Sediment transport ; Slope ; Slope gradient ; Soil erosion
  • Carrying capacity ; Experimentation ; Mathematical model ; Model ; Overland flow ; Rill wash ; Roughness ; Sediment transport ; Slope ; Soil erosion