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Erstellt von rosetinley
vor fast 11 Jahre
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The long profile of a river shows how its height changes as you move downstream
The cross profile of a river is a line showing what it would be like to walk from one side of a valley, across the channel and up the other side
Shallow, narrow channel
Vertical erosion through the processes of hydraulic action, abrasion and attrition
Some traction and saltation at high flow
The river is carrying very little material
Bedload consists of mainly angular boulders and cobbles
Wider, deeper channel
Some vertical erosion but lateral more importantHydraulic action now less significant
Suspension most important but some saltation and traction also occurs
The river is carrying some material
Bedload consists mainly of cobbles and pebbles
Widest, deepest channel
Only a little lateral erosion taking place
Suspension dominates
Bedload consists of mainly sands, silt and clay
The river is carrying a lot of material
Long Profile
Cross Profile
Upper Course
Middle Couse
Lower Course
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