3) Dorest Coast, Southern England Flashcards
why do we study hengistbury head?
example of hard and soft engineering
where is it?
near bournemouth
why should it be protected? (4)
over a million tourists per year
archaeological importance
rapid rate of erosion
educational
what type of structure is it?
headland
how does beach replenishment work?
people regularly replenish the lost material of a beach with shingle
why is shingle used for beach replenishment?
much harder to move
why dont people like beach replenishment?
takes away sandy beaches
disrupts local area
what is a long groyne?
a long barrier that juts out across the beach into the water to prevent sand being lost by LSD
what is gabion revetment?
cages are filled with rocks so the pounding water erodes this rather than the cliffs
how much of the area has been lost to sea?
almost half
conflicts going on (4)
visual pollution
expensive
interrupts natural processes
constant maintenance
What is a successful method of soft engineering and how does this work?
building a long, gently sloping beach
it absorbs most of the energy from breaking waves
When was the cliff constructed?
1938
Direction of prevailing wind
southwest
problem of long groynes
it has reduced beach sediment reaching Highcliffe and Barton on Sea, leading to more cliff erosion on Hengistbury Head
