Coastal processes
- Created by: Molliedyer
- Created on: 24-02-18 16:49
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- Physical processes (coast)
- Weathering
- Mechanical
- Eg. Freeze thaw
- Biological
- eg.action of plant roots and animals
- Chemical
- eg. Limestone dissolved by carbonation
- Mechanical
- Erosion
- Abrasion
- Stones, pebbles and sand thrown by breaking waves
- Hydraulic action
- impact/ weight of waves
- during storms
- waves compress air in joints in rocks
- impact/ weight of waves
- Attrition
- Rocks and pebbles carried by waves rub together and break into smaller pieces
- Solution
- chemical action of seawater dissolves some rocks
- Abrasion
- longshore drift
- beach sediment transported across coast by waves
- transport
- traction
- Large boulders rolled along sea bed
- saltation
- smaller stones bounced along sea bed
- suspension
- Small particles carried by flow
- solution
- Some minerals are dissolved in sea water
- traction
- Deposition
- constructive waves
- sheltered spots
- calm conditions
- gentle gradient offshore causing friction
- constructive waves
- Weathering
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