What is hillslope erosion?
Hillslopes constitute the flanks of valleys and the margins of eroding uplands. They are the major zones where rock and soil are loosened by weathering processes and then transported down gradient, often to a river channel.
What causes hillslope failure?
(2) Conditions that are conductive to hillslope failures Steep slope gradients, mechanically weak geological material, poor permeability, high water table, seepage in the vicinity of steep slope.
How soil erosion is caused by water?
Water erosion occurs when rain or snowmelt displaces the soil on the ground. The more water flowing over the land, the more soil particles are moved or transported away. Land that has no vegetation—including farm fields that are left barren after crop harvest—are especially vulnerable to water erosion.
What is Interrill erosion?
Interrill erosion is the detachment and transport of soil material from the surface of the soil matrix by raindrop impact and overland flow .
How do property changes affect hillslope erosion?
Property changes between and during rainstorms can dramatically affect the incidence and intensity of rill and interrill erosion and, therefore, both short and long-term hillslope erosional response.
What is water erosion?
Water erosion is the removal of soil by water and transportation of the eroded materials away from the point of removal. I. McIvor, Z. Pu, in Encyclopedia of Agriculture and Food Systems, 2014 Water erosion is the removal of soil by water and transportation of the eroded materials away from the point of removal.
What are the effects of water erosion on soil?
Water action due to rain erodes the soil and causes activities like gully, rill, and stream erosion leading to the downstream effects of flooding and sedimentation. The severity of water erosion is influenced by slope, soil type, soil water storage capacity, nature of the underlying rock, vegetation cover, and rainfall intensity and period.
Why don’t we measure upslope erosion patterns at Terminal weirs?
This is an important omission as entrained soil rarely moves directly to the outlet. As a result measurements at a terminal weir may bear little relationship to upslope erosion patterns.