Hard Engineering Flashcards

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What is hard engineering?
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Hard engineering involves building artificial structures which try to control natural processes.

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What is hard engineering?
Give an advantage of using rock armour to protect the coast.
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Cheap and efficient at reducing energy in waves approaching the coast.

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Give an advantage of using rock armour to protect the coast.
What is the impact of groynes down drift?
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Beaches beyond the defences (downdrift) are starved of beach material due to it being trapped behind the terminal (last) groyne.

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What is the impact of groynes down drift?
What are gabions?
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Gabions are coastal defences that consist of rocks and boulders encased in a wired mesh. They absorb the energy from waves.

Gabions

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What are gabions?
How does a groyne help reduce coastal erosion?
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Groynes trap material being transported by longshore drift. This builds up a wide beach which helps absorb energy from waves, reducing the rate of cliff erosion.

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How does a groyne help reduce coastal erosion?




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