Soft engineering Flashcards
What do soft engineering methods work with?
Natural processes
Soft engineering methods aim to enhance and utilize natural systems.
How do soft engineering methods compare in cost to hard engineering methods?
Usually cheaper
Soft engineering methods tend to require less financial investment.
What is a visual benefit of soft engineering methods?
Does not damage the appearance of the coast
Soft engineering methods are designed to blend in with the natural environment.
Why are soft engineering methods considered sustainable?
More sustainable approach to coastal protection
They focus on preserving natural ecosystems.
How do the effectiveness of soft engineering methods compare to hard engineering methods?
Not as effective
Hard engineering methods often provide stronger immediate protection.
What is beach replenishment?
Pumping or dumping sand and shingle back onto a beach to replace eroded material
This process aims to restore the beach’s natural state and protect coastal areas.
What are two advantages of beach replenishment?
- Beaches absorb wave energy
- Widens beach front
What are two disadvantages of beach replenishment?
- Has to be repeated regularly which is expensive
- Can impact sediment transportation down the coast
What negative impact can beach replenishment have on marine ecosystems?
Removing material from the seabed damages fragile ecosystems such as corals and sponges
What is dune regeneration?
Planting vegetation helps to create or stabilise sand dunes and beaches
This method aims to enhance the natural resilience of coastal areas.
What are two advantages of dune regeneration?
- Reduces wind erosion
- Sand dunes act as a barrier between the sea and land
How do sand dunes help prevent erosion and flooding?
The wave energy is absorbed, preventing erosion and flooding
What is a disadvantage of dune regeneration?
Hard to protect larger areas of coastline cliffs with this method
What is cliff re-grading?
The angle of a cliff is reduced to reduce mass movement
This technique aims to stabilize cliffs and prevent erosion.
What is one advantage of cliff re-grading?
Prevents sudden loss of large sections of cliff
How does cliff re-grading affect wave cut notching?
Regrading can also slow down wave cut notching at base of cliffs as wave energy is slowed
What is a disadvantage of cliff re-grading?
Does not stop cliff erosion
