River channel processes and land forms.

Erosion

Transportation

Suspended load - This is where small particles are transported suspended in the river. (silt and clay)

Solution - Is where rocks are dissolved into the water and cared down the river.

Salted load - Larger partials (gravel and small stones) are transported hoping along the river bed.

Deposition

Factors Effecting Erosion

Load - The heavier and shaper the load the grater the chance of erosion.

Traction - Large pebbles roll along the surface of the river bed

Velocity - The grater the speed of the water the greater the potential for erosion.

Gradient - Increased gradient leads to increased velocity.

Geology - Softer rocks are easily eroded.

PH - When the water is more acidic solution is increased.

Human Impact - Deforestation, dams and bridges interfere with natural flow of the river.

Where and when it happens.

When the water velocity slows down this could be because of a change in gradient, matter is deposited and the transportation process finishes

The water volume can cause deposition.

Critical Erosion Velocity - Is the lowest the velocity of water that can move a grain of given size .

Abrasion - This is the wearing away of the bed and the bank by the load that is cared by the river.

Attrition - This is where the load cared down be the river becomes smaller and rounder as it rolls and bonces along the river bed.

Hydraulic Action - The force of water and air into cracks at the side of a river.

Cavitation - The force of air exploding which can damage solid rocks.

Corrosion - Is the removal of chemical irons weakening material.

the hjulstrom curve

A graph showing critical erosion velocity

Critical Erosion Velocity - Is the lowest the velocity of water that can move a grain of given size .

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