What is being done to manage coastal erosion Holderness coast?
Man-made structures – groynes have been installed to stop long-shore drift. This narrows unprotected beaches elsewhere even more. Powerful waves – waves at Holderness travel long distances over the North Sea (so have a long fetch) which means they will increase in energy.
What has been done to protect the Holderness coast?
Management strategies Hornsea is protected by a sea wall, groynes and rock armour. Coastal management at Withersea has tried to make the beach wider by using groynes, and also a seawall to protect the coast. Mappleton is protected by rock groynes.
Why is Holderness coast protected?
Advantages – Protects the base of cliffs, land and buildings against erosion. Over time the wall may begin to erode. The cost of maintenance is high. Advantages = Prevents the movement of beach material along the coast by longshore drift.
What coastal engineering strategy stopped sediment moving south down the Holderness coast?
Steps taken to protect the village of Mappleton The rock groynes have stopped beach material being moved south from Mappleton along the coast.
How has mappleton been protected?
In order to protect the cliffs along the front of Mappleton from undercutting, their gradient was also reduced artificially. Vegetation was planted on the cliffs to further stabilise them from mass movement. This is known as cliff stabilisation.
Why is coastal erosion a problem in Holderness?
The main reason for coastal erosion at Holderness is geological. The bedrock is made up of till. This material was deposited by glaciers around 12,000 years ago and is unconsolidated. It is made up of mixture of bulldozed clays and erratics, which are loose rocks of varying type.
Why is Holderness Coast important?
The Holderness Coast is a great case study to use when examining coastal processes and the features associated with them. This is because the area contains ‘textbook’ examples of coastal erosion and deposition. The exposed chalk of Flamborough provides examples of erosion, features such as caves, arches and stacks.
Why is Bridlington heavily protected?
Bridlington is protected against the north-easterly waves by the 4.7 km long Bridlington Promenade. The beach is sustained by sediment from the erosion process, although there is little net longshore drift, on balance it is in a direction from south to north.
How can hard engineering reduce coastal erosion?
Hard engineering is a coastal management technique used to protect coasts,by absorbing the energy of waves, preventing erosion and flooding. They are highly visible man-made structures used to stop or disrupt natural processes.
Why is hornsea protected?
Hornsea (destructive waves breach defences) In Hornsea sand has accumulated where protection exists. This is because the groynes provide a barrier to sediment transportation. This has reduced erosion along the front of the town but increased rates are evident further south where the defences stop.
Why is Bridlington protected?
What is the rate of erosion on the Holderness coast?
The average annual rate of erosion is around 2 metres per year. This is around 2 million tonnes of material every year. Under lying the Holderness Coast is bedrock made up of Cretaceous Chalk. However, in most place this is covered by glacial till deposited over 18,000 years ago.
Where is the Holderness coastline located in England?
Holderness Coastline – Management. 1. The Holderness Coastline – The Management of Coastal Erosion Holderness is a lowland region of England that lies between the chalk hills of the Wolds and the North Sea. It is part of the East Riding of Yorkshire. The Holderness Coast is one of Europe’s fastest eroding coastlines.
How did the Holderness coastal management scheme work?
A coastal management scheme costing £2 million was introduced involving two types of hard engineering – placing rock armour along the base of the cliff and building two rock groynes. Mappleton and the cliffs are no longer at great risk from erosion. The rock groynes have stopped beach material being moved south from Mappleton along the coast.
Which is the best case study for coastal management?
Hard engineering management involves using artificial structures, whereas soft engineering management is a more sustainable and natural approach to manage coastal erosion. Coastal management case study: Holderness coastline. The Holderness coastline is located on the east coast of England. It is the fastest eroding coastline in Europe.