Erosion Processes in Upland Areas

by Vida G. Wright, Univ of California, Davis, United States,
Ray B. Krone, Univ of California, Davis, United States,



Document Type: Proceeding Paper

Part of: Hydraulics/Hydrology of Arid Lands (H²AL)

Abstract: After a soil particle is detached and entrained, it will be transported by the surface runoff. However, depending on the eroding and transport capacities of the surface runoff, some of the suspended particles may be deposited on the flow path. Eroding capacity is dependent on the flow depth, bed geometry, and critical shear strength of the soil. Transport capacity of the surface runoff is dependent on the flow depth and the bed geometry. Due to the highly non-linear nature of the flow and sediment transport equations, an analytical solution for erosion at upland areas does not exist. Therefore, numerical analyses techniques were used to simulate erosion processes from the upland areas. The approach provides insight into erosion processes and promises to be useful for predicting soil erosion under various storm scenarios.

Subject Headings: Erosion | Runoff | Sediment transport | Particles | Overland flow | Geometrics | Shear strength | Soil strength

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