The Long Profile of a River Flashcards
The increase in lateral (sideways) erosion.
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The long profile shows the gradient of the river from its source to mouth.
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The river channel becomes deeper due to the increase in discharge and wider due to lateral erosion.
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Discharge increases downstream because of additional water from tributaries. Velocity increases due to the additional water from tributaries and less water is in contact with the bed and banks so there is less friction.
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It becomes narrow and steep-sided in the upper course due to vertical erosion.
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