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Coastal Change


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Backwash
the movement of a wave retreating back to sea away from the beach
Bay
sheltered area of coastline made from soft rock
Coastal Flooding
When areas of land are flooded by the sea.
Coastal Management
The processes and plans applied to coastal areas by local authorities and agencies
Concordant Coast
layers of hard and soft rock which lay parallel against the coastline
Constructive Wave
wave which has a larger swash than backwash
Deposition
Placing sand and sediment in a certain place by a wave erosion transportation or humans.
Destructive Wave
A wave which has a larger backwash than swash
Discordant
coast layers of hard and soft rock which run vertically against the coastline forming headlands and bays.
Do Nothing
An approach that allows natural processes to take their course without any intervention
Erosion
breaking down of rock and sediment
Fetch
the distance a wave travels before hitting the coastline
Geological Structure
The way in which the rocks are arranged both vertically and horizontally
Hard Engineering
a heavily managed area of the coastline e.g. sea wall groyne
Hard rock
Coast more resistant rock which is harder to erode or weather e.g. granite
Headland
outcrop of land at sea made from hard rock
Holistic
approach An approach to environmental management that threats the whole area as an interrelated system
ICZM
A sustainable method of coastal management managing the whole coastal area from the shoreline to several kilometres inland as one area.
Longshore Drift
Process of sediment moving along the coastline.
Mass Movement
The down slope movement by gravity of soil and/or rock by the processes of slumping falling sliding and flowing
Soft rock
coast less resistant rock which is easily eroded or weathered e.g. limestone
Spit
sand and sediment which is attached to the coastline but sticks out at sea
Stack
A detached column of rock located just offshore
Strategic Realignment
The reorganisation of coastal defences that is often part of managed retreat
Stump
A stack that has collapsed leaving a small area of rock above sea-level
Sub-aerial
processes the weathering of rock and the impacts of wind and rain