Coastal Management

Which one of the following is a soft engineering technique?

• Groynes
• Dune stabilisation
• Rip rap
• Revetments

What is the main disadvantage of using groynes?

• They can starve other beaches of sediment
• Aesthetically displeasing
• Expensive

Groynes are an effective technique because they stop the process of what occurring?

• Transportation
• Longshore drift
• Nearshore drift
• Deposition

A recurved sea wall is effective because it...

• Is not particularly expensive
• Stops erosion of the coastline
• Deflects wave energy back out to sea

What would be the best thing to help preserve a sand dune?

• Put a sign up telling people to stop stealing stand.
• Build a sea wall.
• Beach reprofiling.
• Plant vegetation on the sand dune to hold it in place.

Sand is being dumped or removed?

• Removed 
• Dumped 

What is the dumping of new sand onto an eroded beach to restore it?

• barrier island
• beach nourishment
• dredging
• jetty

What is the main advantage of rip rap?

• Stops erosion
• Aesthetically pleasing
• Minimal effect on wildlife, often creating new habitats
• Environmental damage due to transportation

What type of areas are typically subjected to the management technique of managed retreat?

• Low value areas e.g. farmland
• Low lying areas
• Housing estates
• High value retail areas

Is there any cost associated with managed retreat?

• No - no techniques are put in place
• Yes - techniques are put in place
• No - this is a soft engineering method
• Yes - compensation has to be offered