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Geography C2: Unit 1(Fluvial Process) (Fluvial Transportation (Saltation,…
Geography C2: Unit 1(Fluvial Process)
Influencing Factors
River Velocity
Channel Gradient
Sinuosity
Cross Section
Channel Roughness
Wetted Perimeter
Volume of Flow
Positive Relation
Size of River Basin
Precipitation
Slope Gradient
Negative Relation
Evapotranspiration
Vegetation Cover
Permeability of River Basin
Fluvial Erosion
Types
Abrasion/Corrasion
Hydraulic Action
Attrition
Solution/Corrosion
Direction
Headward Erosion(Source of a River)
Groundwater--->Upstream Direction
Valley Lengthened
Vertical Erosion(Upper Course)
Steep Gradient--->Downward Direction
Valley Deepened/Narrowly V-shaped
Lateral Erosion(Middle/Lower Course)
Gentle Gradient--->Lateral Direction
Valley Widened/Broadly V-shaped
Fluvial Transportation
Saltation
Traction
Suspension
Solution
Fluvial Deposition
Sorting--->Stratification
Sorting
Deposition Takes Place in Sequence According to Particle Size
Stratification
Formation of Layers of Sediments