How is the Holderness coastline managed?

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 uses a seawall to protect the coast. Mappleton is protected by rock groynes. Spurn Head is protected with groynes and rock armour.

How much does the Holderness coast retreat?

one to two metres every year
The Holderness coast is in the north east of England. This is one of the most vulnerable coastlines in the world and it retreats at a rate of one to two metres every year.

What are the 2 reasons that cause the Holderness coastlines to retreat?

There are two main reasons why this area of coast is eroding so rapidly. The first is the result of the strong prevailing winds creating longshore drift that moves material south along the coastline. The second is that the cliffs are made of soft boulder clay which erodes rapidly when saturated.

How much did the rock armour cost at Easington?

There is a Gas Terminal at Easington and 2.25% of all UK gas comes through this station. Strategies: Rock Armour at a cost of £4.5m.

What are the disadvantages of managed retreat?

Causes controversy due to lack of understanding. Requires large initial financial investment. Requires long term planning. Requires community buy-in and cooperation of multiple agencies.

What is the SMP at Holderness?

What is a Shoreline Management Plan? A Shoreline Management Plan (SMP) is a plan for managing flood and erosion risk for a particular stretch of shoreline, looking at the short, medium and long term.

How are humans causing change on the Holderness coast?

Human interference, such as sea defences, causes rapid erosion of the unprotected beaches and cliffs. To counter this, local and regional authorities are nowadays trying set up integrated coastal zone management programmes for the whole coastline.

What is terminal groyne syndrome?

3 The terminal groyne effect is defined as: Where defences stop or dramatically reduce erosion, inducing a. sediment deficit down-drift and causing a consequent increase in down-drift retreat rate.

What are the pros and cons of managed retreat?

Managed retreat is the controlled flooding of low-lying coastal areas….Advantages

  • This is a cheap option compared to paying for sea defences.
  • Creates a salt marsh which can provide habitats for wildlife and a natural defence against erosion and flooding.
  • Salt marshes are diverse ecosystems supporting many species.

How does a managed retreat work?

Managed retreat or managed realignment is a coastal management strategy that allows the shoreline to move inland, instead of attempting to hold the line with structural engineering. At the same time, natural coastal habitat is enhanced seaward of a new line of defense.