Building vs. Weathering and Erosion of Coastal Environments.

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Presentation transcript:

Building vs. Weathering and Erosion of Coastal Environments

Waves Action Constructive vs. Destructive Swash (upwash) vs. Backwash

Constructive Zones - Swash Beaches Larger beach profile. Marked by dunes and berms in the backshore.

Swash Beaches - Berms and Dunes Berms – area where swash ends Dunes – piles of sand behind berm (transition zone)

Destructive/Constructive - Drift Beaches Longshore Drift Movement of sediment along shoreline caused by wave action and wind.

Destructive Zones

What is weathering? The physical breakdown of rocks with no movement.

What is Erosion? The action of breaking down and moving rock or soil from one place to another.

Types of Erosion Hydraulic Erosion Abrasive Erosion Corrosive Erosion

Your task: Coastal erosion is usually what we are worried about, as humans build and exist in such a focused way close to the coast line. Complete the online task about in regards to coastal erosion.