Co - Happisburgh + Sea Palling Management Flashcards
Give 5 examples of Costal management used at Happisburgh and Sea Palling (both human and natural defences)?
.Revetements .Groynes .Rock armour .Sand dunes .Sea walls
Where are Happisburgh and Sea Palling located?
In Norfolk
In Happisburgh, which specific area has been eroded particularly?
The area near the lighthouse
What had been done near the lighthouse in Happisburgh to reduce costal erosion and how long did it take for these features to be destroyed?
Groynes and Revetements were used, and they were built in 1998, and destroyed by 2009
How does ‘rock armour’ work to minimise costal erosion?
They work by taking the energy from the waves, and they don’t erode fast themselves
When and why did the rock armour at Happisburgh stop serving it’s purpose?
In 2013, and because the sea level had gone over the rocks, so the sea could still erode the cliffs
What is an example of a natural defence used to minimise costal erosion at Sea Palling?
Sand dunes
How do sand dunes and sea walls work at Sea palling?
They work by diffracting the waves which create create areas of low energy, (lowering the average energy of the wave) which leads to deposition