6533b826fe1ef96bd128478e

RESEARCH PRODUCT

Modelling sediment delivery processes by a stream tube approach

Costanza Di StefanoPaolo PortoVito Ferro

subject

Slope lengthSediment yieldErosionSedimentGeometryTube (container)CurvatureGeomorphologyPhysics::Atmospheric and Oceanic PhysicsDeposition (geology)GeologyPhysics::GeophysicsWater Science and Technology

description

Abstract The sediment delivery processes due to the travel along a hydraulic path having an uniform slope and to the concave shape of the path are modelled. In particular, using a power equation for modelling the slope profile and RUSLE with two different expressions of the topographic factors, a criterion to define the erosion active slope length, i.e. the slope length in which no deposition processes occur, is initially proposed. Then, the RUSLE equation is adapted to concave profiles by a correction factor of the topographic factors depending on slope curvature. Finally, the deduced relationships (equations (19) and (27)) for correcting the topographic factors for a concave slope are experimentally tested, comparing the calculated sediment yield values with the measurements carried out at the outlets of three small Calabrian basins.

yearjournalcountryeditionlanguage
1999-10-01
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