4.5 Interactions of physical and human processes Flashcards
Why is the sea level rising?
Because of the melting of ice on land
How badly will sea level get and how ill it affect different places?
Sea levels will continue to rise over the next decades and places like maldeeves will be underwater by 2030.
How will climate change affect erosion - deposition
Sea levels rising will make the waves bigger causing cliffs to erode faster
How will storms and storm surges affect people and environment?
Habitats will be destroyed and houses will be flooded and damaged, causing many economical effects.
Explain how groynes and sea walls work
Groynes stop erosion from happening as they trap sediment and sea walls stop the waves from eroding the coastlines and absorbs the impact of the waves
Explain how beach replenishment and slope stabilisation works
Sand is put on the beach to build up the coastline and stop erosion using soft engineering and slope stabilisation puts pipes in the hills and let water run down so it doesn’t cause land slides
Advantages and disadvantages of each management type
Groynes: stops the beach from erosion, but it will erode faster down the coast
Sea walls: they stop the coastline from eroding, but they are too expensive
Slope stabilisation: it keeps the cliff in place, but difficult to install snd closes beach for a long time
Beach nourishment: looks natural, but winter storms transport material away and needs to be looked after frequently
What is soft engineering
Working with nature to prevent erosion, usually cheaper
What is hard engineering
Working against nature to prevent erosion, usually costs more
Strategic realignment and which area may be left to erode?
When they let some parts of a coastline to erode while protecting higher value areas.
What parts of the coastline would be left alone during strategic realignment
Places of lower value
Explain why ITC, schemes are a sustainable form of coastal management
Because they save money by letting some places erode, while saving other places that make more money to improve elsewhere and give more tax to the council.
