AERODYNAMIC ROUGHNESS AND SALTATION TRAPPING EFFICIENCY OF TILLAGE RIDGES
A new wind erosion prediction system (WEPS) is being developed by a modeling team to replace the current wind erosion equation. WEPS simulates erosion, as well as soil and biomass conditions that control wind erosion. Parameters for the WEPS erosion submodel are being developed in a series of wind tunnel experiments. Field tillage ridges containing large aggregates are often used to aid in control of wind erosion. Two of the ways armored ridges control erosion are raising the threshold velocity where erosion begins and trapping saltating soil particles. The objectives of this study were to determine: