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Costal Managment - Coggle Diagram
Costal Managment
Hard engineering
Sea wall
Concrete
Recurved to reflect waves
Flood barrier
Drain outlets
Strong backwash erodes under wall
Rock Armour
Collection of large boulders
Angular to increase SA
Absorb wave energy
Lose to transfer energy through movement
Ugly
Gabions
Same principle as RA
Smaller boulders trapped in cages
Ugly
Gryones
Reduce impact of LSD
Steel/Wood/Concrete breakwaves
90 degree angle to sea
Starve down drift beaches
Cliff stabilization
Steel bars to stabilise
Revetments
Concrete/Wood
Take full force of wave
Prevent further erosion
Strong backwash
Off shore reefs
Use off old ship wreaks
Causes waves to break early
Reduces wave energy
Coral reef habitat
Hard
Working against nature
Building interventions
Expensive
Resistant materials
Physical change
Cost justified
Specific purpose
Soft engineering
Managed retreat
Remove old strategies
Allow land to flood
Make use of saltmarshes
Dune stabilization
Replanting lost vegetation
Wooden board ways to prevent trampling
Educate tourists
Prevent animal grazing
Beach regeneration
Add sediment to beach
Reduce impact of erosion
Transfer sand from somewhere else
Land use management
Plan what to build on coasts
Farming over building
Reduced land use
Do nothing
Soft
Allow natural processes to take over
Cheaper
Working with nature
Sustainable
Soft more sustainable
Lower environmental impact
Shoreline management plans
Sediment cells
Hold, advance, retreat the line
Plan for each cell
Integrated coastal zone managment
All elements of coastline
Environment viewed as whole
Uses are considered
Local, regional, national input
Dynamic strategy - can be reevaluated