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12 Cards in this Set

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what are x4 hard engineering solutions to costal erosion

sea wall


riprap


groynes


gabions



what are the + of a sea wall

prevents erosion by deflecting the wave


barrier for flooding

what are the - of a sea wall

strong backwash


expensive

what is riprap

boulders on the coast that absorb wave energy

what are the + of ripraps

reduce erosion

what are the - of ripraps

can be moved and eroded themself

what are the are groynes

wooden fences built on the beach to stop material from being transported

what are the + of groynes

create wider beaches to slow waves

what are the - of groynes

create narrow beaches down coast

what are gabions

rock filled cages put at the foot of the cliff

what are the + of gabions

reduce erosion and absorb force of waves

what are the - of gabions

ugly