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Coastal Erosion and Stabilization

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Questions and Answers

What is the main reason why hard stabilization structures are not always the desired solution?

They take away from the aesthetic beauty of the beach (correct)

They are difficult to construct

They are expensive to build and maintain

They are not effective in preventing erosion

What is the purpose of breakwaters and seawalls?

To prevent erosion and maintain the beach

To protect the coast from the force of waves (correct)

To add aesthetic beauty to the beach

To provide a habitat for native shoreline species

What is the main difference between hard stabilization and soft stabilization?

Hard stabilization relies on constructed barriers, while soft stabilization uses vegetation or sand (correct)

Hard stabilization is more effective than soft stabilization

Hard stabilization is used for small beaches, while soft stabilization is used for large beaches

Hard stabilization is more expensive than soft stabilization

What is the primary force behind coastal erosion?

All of the above Signup and view all the answers

What is the purpose of groins?

To prevent erosion and maintain the beach Signup and view all the answers

What is soft stabilization?

The addition of vegetation or sand to stabilize the shoreline Signup and view all the answers

What is the main problem with hard stabilization structures?

They interfere with the natural ecosystem Signup and view all the answers

What is the primary purpose of soft stabilization methods in coastal management?

To anchor sand and sediment, slowing erosion caused by wind and waves Signup and view all the answers

What is the main advantage of beach nourishment in terms of coastal protection?

It widens the beach, providing added protection from storm waves Signup and view all the answers

What is a major disadvantage of beach nourishment?

The high cost involved in transporting large quantities of sand Signup and view all the answers

Why may beach nourishment not be a sustainable solution to erosion?

The 'new' beach must be maintained through constant replenishment Signup and view all the answers

What was the outcome of using non-native sand for beach nourishment in Waikiki Beach, Hawaii?

The softer sand turned the water cloudy, resulting in the demise of offshore coral reefs Signup and view all the answers

What is relocation in the context of coastal management?

Moving structures away from the eroding beach Signup and view all the answers

Why was the Cape Hatteras lighthouse in North Carolina relocated?

To protect the historic structure from the pounding ocean waves Signup and view all the answers

What is the primary difference between soft stabilization and hard stabilization?

Soft stabilization uses organic materials, while hard stabilization uses inorganic materials Signup and view all the answers