The action of rivers

The action of rivers - o Hydraulic Action: Erosion by the...

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The action of rivers Rivers are the most widespread agents of denudation and deposition. The amount of erosion, transportation and deposition of the river is dependent on the energy of the river which in turn is dependent on: o The gradient of the slope o The volume of water o The shape of the channel Generally, the volume of the river increases from the source to the mouth. Exceptions may be such as when the river passes through a hot desert. River Erosion River erosion involves 4 processes: o Abrasion/Corrasion: The wearing away of the sides and the bed of a river by the impact of the load.
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Unformatted text preview: o Hydraulic Action: Erosion by the force of moving water. o Atrrition: The breaking down of the load by particles hitting against each other. o Solution/Corrossion: When minerals dissolve in water. River Transport The material a river carries is referred to as its load . A river transports its load in 4 main ways: o Traction: The rolling of huge particles along the bed. o Saltation: The bouncing of particles on the bed of the river o Suspension: The movement of particles held up by river turbulence. o Solution: The movement of particles dissolved in water....
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This note was uploaded on 11/10/2011 for the course GEA GEA2000 taught by Professor Wong,faith during the Fall '09 term at Broward College.

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