Managing Coastal Landscapes Flashcards

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Note: We may include questions that have multiple correct answers. It’s useful to remember specific examples to understand these concepts better.

What are the two main strategies to manage coastal erosion?

The two main strategies to manage coastal erosion are hard engineering and soft engineering.

What is hard engineering in coastal management?

Hard engineering involves the use of physical structures, such as sea walls and groynes, to manage coastal erosion and mitigate the impacts of waves.

What are the advantages and disadvantages of sea walls?

Advantages:
• Strong wave reflection, preventing erosion and reducing flood risk.
• Immediate protection for properties and infrastructure.

Disadvantages:
• Increased erosion further down the coast.
• High construction and maintenance costs.
• Changes in natural sediment transport, resulting in beach loss.

How do groynes help manage coastal erosion?

Groynes are wooden or stone barriers that extend perpendicular to the coastline. They interrupt longshore drift and trap sediment, which increases beach width and provides a buffer against erosion.

What is beach nourishment?

Beach nourishment involves adding sediments to replenish eroded beaches.

What are the advantages and disadvantages of beach nourishment?

Advantages:
• Increased beach width protects the coast from wave impact.
• Improved habitat for coastal flora and fauna.
• Expanded beach areas for recreation.

Disadvantages:
• High costs for acquiring and placing sediment.
• Regular maintenance and replenishment required.

What is managed retreat?

Managed retreat allows coastal areas to retreat naturally, accommodating erosion.

What are the advantages and disadvantages of managed retreat?

Advantages:
• Cost-effective and environmentally friendly.
• Restores natural habitats and creates dynamic ecosystems.

Disadvantages:
• Potential loss of properties and infrastructure.
• Relocation challenges for affected communities.

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