CISEC Module 2 Background of an Inspector Exam

CISEC Module 2 Background of an Inspector Exam Surface creep erosion - ANSWER ️️ the rolling and sliding movement of particles across a surface. Represent about 5% to 25% of the total soil loss by wind. Creates sand dunes. Saltation erosion - ANSWER ️️ the hopping and bouncing movement of particles. Particles are lifted into the atmosphere but return to the ground and dislodge other particles. Represent about 50% to 80% of the total loss by wind. Transports the most soil! Suspension erosion - ANSWER ️️ Occurs when very small particles are carried great distances by wind. Particles can remain suspended for long durations and can travel great distances. Represent less than 10% of total soil loss by wind. Raindrop or splash erosion - ANSWER ️️ Dislodging of soil particles due to the impact of raindrops. Sheet erosion - ANSWER ️️ Stripping of soil that occurs due to sheet flows of runoff. Rill erosion - ANSWER ️️ Small rivets that can be up to 3-inches (76 mm) deep that form due to the concentration of sheet flow waters. Gully erosion - ANSWER ️️ Large and deep channels that occur when concentrates flows of water scouring along flow routes cause sharp-sided entrenched channels. Streambank and channel erosion - ANSWER ️️ The removal of soil and other embankment materials due to concentrated channel flows. Factors that impact water erosion - ANSWER ️️ Climatic events, soil erodibility, length of flow, slope of land, erosion control BMPs, sediment control BMPs. Sediment - ANSWER ️️ Eroded material suspended in water or in air. Sedimentation - ANSWER ️️ The deposition of eroded material.