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4.a.-Coastal landscapes being managed: Swansea (Impacts of the sea wall…
4.a.-Coastal landscapes being managed: Swansea
Sea wall all along Swansea bay
Rock armour/ boulders which protect the sea wall at Bracelet bay
Smaller sea wall at Bracelet bay
Impacts of groynes along Swansea bay
The goynes halt the process of LSD
The minimal long shore drift down the beach means that there is less sand accumulation to the north end of the beach as it gets stopped by the groynes
Impacts of the sea wall and rock armour on coastal processes
Boulders cause caves along the shoreline
Accumulation of sediment further up the beach
Smaller sediment on the east side of the beach due to not groynes to stop longshore drift
Larger width of beach at the east end
The impact of the sea wall has protected the whole city of swansea including the two university campuses that lie on the coastline
Impacts of the sea wall on coastal processes
The accumulation of sediment ups shore has been limited as it cannot get past the sea wall
Large waves are halted by the sea wall
The beach is steeper near the sea wall than towards the sea cause the wall stops sediment passing over and causes beach sediment build up
Sand dunes replenishment on Swansea bay
These sand dunes lie in front of the groynes so protect the sea wall from being eroded by the strong waves that approach the sea wall
Will absorb a lot of the energy produced by the waves
Aeolian processes will occur carrying light sand from the dunes over the sea wall in land and this is why they need replenishing often as they are acsoft way of engineering
Groynes along Swansea Bay
