Flashcards
Physical Geography Coasts Hard Engineering
Cards in this deck (5)
- 1Rip Rap (Rock armor)Construction- Huge igneous of metamorphic rocks.
Purpose- Dissipate wave energy and protect sea wall
Impact on physical process- Reduced Wave energy
Cost per m- £1,500 to £6,000 - 2Rock BreakwaterConstruction- Huge Igneous or metamorphic rocks
Purpose- Force waves to break offshore
Impacts on physical process- Reduces wave energy at coast
Cost per m- £1,750 to £4,500 - 3Sea WallConstruction- Concrete with steel reinforcement
Purpose- Physical barrier against erosion and flooding
Impact on physical process- Stops erosion of land but destroys natural cliff face
Cost per m- £3,000 to £10,000 very expensive - 4RevetmentsConstruction- Stone or timber sloping structure which is permeable
Purpose- To reduce wave energy and swash
Impact on physical process- Reduces wave energy and swash, encourages deposition and vegetation
Cost per m- £500 to £3,000 - 5GroynesConstruction- Timber
Purpose- Prevent longshore drift, build a higher and wider beach
Impact on physical environment- Deposition accelerated, can starve areas further down the beach.
Cost per m- £150 to £2,500
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- Flashcards on Physical Geography Coasts Hard Engineering, created by Thomas York on 01/01/2023.
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- Thomas York
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