5-5 - Dangers along the shore: Mitigation and Aggravation...

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Mitigation and Aggravation Energy and Coastal Hazards High energy: Energy and Coastal Hazards High energy: erosion and transport of material from shore Energy and Coastal Hazards High energy: erosion and transport of material from shore Low energy: Energy and Coastal Hazards High energy: erosion and transport of material from shore Low energy: deposition of material on shore Shore “Protection” 1) Lower energy from ocean 2) Absorb energy from ocean 3) Add material Breakwaters Solid, artificial barrier. Deflect wave energy Breakwaters Jetties Jetties: breakwaters projecting from shore. Can be used to stop longshore drift erosion. Keep inlets through barrier beaches open. Groins Groins: series of short jetties. Groins Groins: series of short jetties. Stop sand from moving along beach. Groins Groins: series of short jetties. Stop sand from moving along beach. Same problems as jetties Seawalls Seawalls: elevated wall along shore. Reflect and absorb force of waves, and prevent flooding.
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5-5 - Dangers along the shore: Mitigation and Aggravation...

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