Geography river notes
- Created by: abi
- Created on: 05-04-13 15:07
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- Rivers
- Types of erosion
- Hydraulic action
- Corrosion
- Attrition
- Solution
- Types of transporation
- Solution
- Suspension
- Saltation
- Traction
- Meandering
- Water is faster on the outside ben as the channel is deeper (less friction)
- Erosion occurs on the outside bends and forms river cliffs
- Deposition occurs on the inside bend and form slip off slopes
- Ox-bow lake formation
- 1) In a straight channel the zone of maximum flow (thalweg) will meander from side to side
- 2) Where it meets the bank lateral erosion occurs.
- Due to hydraulic action and corrosion
- 4) Deposition takes place in the slower flowing water (form slip off slope)
- 5) When meandering becomes exaggerated a swan's neck meander is formed.
- 6) Later erosion continues to erode the narrow ***** of land between the two river cliffs
- 7) During a flood this land gets cut through by lateral erosion
- 8) The river takes the shortest route to flow in a straight-line.
- 9) Deposistion occurs along the side and blocks of the old meander
- Levees
- Natural embankments along the edge of a river channel
- During a flood, material is deposited on the flood plain
- Hyrdographs
- Peak rainfall; The highest amount of rainfall on a hydrograph
- Discharge; The amount of water at a given point in a river
- Lag time; Time between peak rainfall and peak discharge.
- Hard engineering
- Sea wall
- Rock armour
- Groynes
- Soft engineering
- Beach nourishment
- Beach reprofiling
- Beach recyling
- Managed retreat
- Drainage basin
- The scource
- A channel
- The mouth
- Watershed
- Tributaries
- Confluence
- The Hydrological Cycle
- Evaporation
- Transpiration
- Precipitation
- Interception
- Infiltration
- Groundwater
- Types of erosion
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