Aeolian features ; Aeolian transport ; Avalanche ; California ; Mass movement ; Model ; Roughness ; Soil properties ; United States of America ; Wind erosion ; Wind speed
The increase of soil mass flux with distance downwind, the fetch effect for wind erosion, has been observed and reported on since 1939. The model proposed incorporates 3 mechanisms: 1) the avalanching mechanism in which one particle moving downwind
Sediment fluxes and particle grain-size characteristics of wind-eroded sediments in Southeastern Australia
Aeolian features ; Arid area ; Australia ; Cultivated land ; Dust storm ; Grain size distribution ; New South Wales ; Organic materials ; Sandy soil ; Sediment transport ; Semi-arid area ; Soil ; Suspended load ; Wind erosion
Grain-size characteristics and the flux of sediment transported by wind from a cultivated paddock in a Quaternary relict dune field, at Mendook, are described: distribution of soil mass with height; particle-size characteristics of suspended
sediments; relationship of sediment flux to wind erosivity and duration.
Wind erosion and PM10 emissions from agricultural fields on the Columbia Plateau
Aeolian features ; Aeolian transport ; Agricultural practice ; Arid area ; Cultivated land ; Roughness ; Semi-arid area ; Soil ; Soil erosion ; Suspended load ; United States of America ; Washington ; Wind erosion
Analysis from 8 wind events show that significant relations exist between total mass of soil in both horizontal (saltation) and vertical (suspension) transport. The data suggest that by limiting horizontal soil erosion, emitted dust can
Wind-tunnel modelling of the influence of vegetation structure on saltation threshold
Aeolian features ; Aeolian transport ; Arid area ; Experimentation ; Plant cover ; Roughness ; Vegetation ; Wind erosion
This paper is concerned with the development of predictive relations for application to the natural or spontaneous vegetation cover of arid and semiarid lands. Wind-tunnel experiments using arrays of model roughness elements to simulate vegetation
Aeolian features ; Arid area ; Arizona ; Experimentation ; Plant canopy ; Semi-arid area ; Soil erosion ; United States of America ; Wasteland ; Wind erosion ; Wind speed
Shear velocity ratios were derived for 6 neighbouring localities representing rangeland, abandoned farmland and a playa, in the semi-arid region of the Sonoran Desert. Near-surface and above-canopy wind speeds, mostly below saltation threshold, were
used to evaluate the partitioning of shear velocities and shear stresses between the plant canopy and the surface. Results are discussed with the goal of assessing the protection provided by sparse vegetation against wind erosion.