Describe coastal erosion, explaning some causes of coastal erosion
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Causes
Input of coastal defences along the coast at Hornsea, Withernsea and Mappleton.
Removal of sediment offshore - in 2000, 3811044 tones was dredged illegally offshore.
Housing development
Cliff is made up soft glacial material
Waves have a long fetch
The beaches are narrow
Effect
Could have an affect on places further down the coastline, because of longshore drift and build up of material
Sediment is taken away which means that there is less sediment on the beach to protect the coastline against the waves.
Can make the soil/rock weaker which makes it more vulnerable to erosion.
The material is easily eroded by the waves which means that the cliff is quickly eroded and the waves are more effective
The waves can build up a lot of energy because of the fetch
There is less sediment to protect the coastline
Input of coastal defences along the coast at Hornsea, Withernsea and Mappleton.
Removal of sediment offshore - in 2000, 3811044 tones was dredged illegally offshore.
Housing development
Cliff is made up soft glacial material
Waves have a long fetch
The beaches are narrow
Effect
Could have an affect on places further down the coastline, because of longshore drift and build up of material
Sediment is taken away which means that there is less sediment on the beach to protect the coastline against the waves.
Can make the soil/rock weaker which makes it more vulnerable to erosion.
The material is easily eroded by the waves which means that the cliff is quickly eroded and the waves are more effective
The waves can build up a lot of energy because of the fetch
There is less sediment to protect the coastline
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