Holderness Coast Risks
- Created by: Ellie Hadley
- Created on: 14-05-13 10:39
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- The Holderness Coast
- Cliff Foot Erosion
- Abrasion
- Waves attack the base of the cliff. Material picked up from waves chip away at the base.
- Hydraulic action
- Advancing waves trap air inside cracks in the cliff, increasing air pressure.
- Waves retreat, air explodes, joints weaken and cracks occur breaking up the cliff.
- Advancing waves trap air inside cracks in the cliff, increasing air pressure.
- Corrosion
- Cliffs formed from chalk or limestone. Acids in the sea dissolve the alkalis.
- Abrasion
- Cliff Face Processes
- Weathering
- Physical - Freeze Thaw
- Biological - Seedlings germinate in cracks of cliff.
- Chemical - Rainwater combining with CO2 or SO2 to form carbonic acid or sulphurous acid
- Mass movement
- Slumping - alternate wetting and drying of clay.
- Slumped material collects at the base and is washed away by waves.
- Weathering
- Fetch - currents add energy to waves.
- Destructive waves eroding cliffs.
- Cliff Foot Erosion
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