Ad/Dis 0.0 / 5 ? GeographyCoastal zonesGCSEEdexcel Created by: rashid7Created on: 18-02-16 14:47 Sea Wall Disadvantages Expensive, maintenance cost is high, unsightly 1 of 16 Sea Wall Advantages Resistant concrete protects base of cliff, reflects wave energy 2 of 16 Groynes Advantages Prevents beach material from moving up, attraction for tourists 3 of 16 Groynes Disadvantages Ugly, wood rots, sand prevented from moving along 4 of 16 Rip Rap Advantages Absorbs wave energy, protects weak cliffs, natural 5 of 16 Rip Rap Disadvantages Expensive, lets wave energy through, restricts access for young and elderly 6 of 16 Revetments Advantages Absorbs and spreads wave energy, doesn't interfere with longshore drift 7 of 16 Revetments Disadvantages Expensive, regular maintenance needed 8 of 16 Off-shore reefs Advantages Waves break reducing energy, allows a wide beach to develop 9 of 16 Off-shore reefs Disadvantages Expensive, interferes with boats 10 of 16 Beach Replenishment Advantages Natural, provides beach, absorbs wave energy, cheap 11 of 16 Beach Replenishment Disadvantages Sea keeps on eroding it away - has to be replaced 12 of 16 Managed Retreat Advantages Natural processes allowed to happen, people protected 13 of 16 Managed Retreat Disadvantages Compensation has to be paid 14 of 16 Cliff Regrading Advantages Angle reduces - mass movement less likely, cheap 15 of 16 Cliff Regrading Disadvantages Properties on the cliff have to be demolished 16 of 16
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