P1B 14Management of Coastal Erosion and Flooding

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What is coastal flooding?

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The inundation of low-lying coastal areas due to an abnormal rise in the sea level.

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What are the primary causes of coastal flooding?

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Storm surges, tsunamis, and rising ocean levels due to global warming.

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What is a storm surge?

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An abnormal rise of the ocean surface caused by storms such as hurricanes.

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What is a tsunami?

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Giant sea waves, often caused by underwater earthquakes, that can reach up to 30 meters high.

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What is the main management technique for coastal flooding?

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Construction of sea dykes/seawalls.

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What are sea dykes/seawalls?

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Structures built along the coast to prevent flooding from the ocean, typically made from earth or concrete.

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What is coastal erosion management?

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Effort to prevent or limit the effects of erosion along a coastline.

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What are the two main strategies for coastal erosion management?

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Cliff-line stabilization and managed retreat.

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What is cliff-line stabilization?

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Aims to reduce erosion along a coastline.

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What is managed retreat?

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A strategy that allows the coastline to retreat naturally in certain areas, limiting development in high-risk coastal zones.