chapter 10Lab on Shorelines and Coastal Processes-1revised

chapter 10Lab on Shorelines and Coastal Processes-1revised...

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1.Lab on Shorelines and Coastal Environments Physical Influences on Coastal Margins plate tectonics passive margins - broad shelves, no volcanism, low relief active margins - narrow shelves, volcanism, high relief sea level variability (long term) sea level rise - irregular, submergent coastline sea level fall - smooth, emergent coastline ocean/atmospheric circulation + climate
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Model for Coastal Processes - I Three dominant factors define coastal form Wave Energy high energy promotes erosion low energy promotes sediment deposition Sediment Supply high supply protects coastline low supply permits enhanced erosion Tides - only important in local areas with broad shallow lagoons or estuaries Human Impact on the Beach Environment When humans live along beaches they want to preserve the summer beach condition Seasonal or longer term erosion is a nuisance humans try to control Build artificial beach structures groins or jetties sea walls or revetments
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Coastal erosion at the north end of Jekyll Island, Georgia. Dune erosion on the Outer Banks of North Carolina near Cape Hatteras. Note downed trees in the surf zone. Go to this website and complete the following on the Virtual Tour of Barrier Beach. 1. Take the Virtual tour for Barrier Beach 2. Check the Physical Characteristics 3. Check the Land Use Tab 4. And look over the Maps Section 5. Then look at the questions in the lab and complete them for this section.
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http://omp.gso.uri.edu/ompweb/discovery/BarrierBeach/BB HOME.HTM Global Beach Types Coastal Plain Beach - most common, typical along passive margins Barrier Beach - typical wherever hurricanes occur Pocket Beaches - typical along active margins with resistant bedrock
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This note was uploaded on 04/03/2011 for the course PHYS 114 taught by Professor Comptonw during the Summer '10 term at Purdue University.

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chapter 10Lab on Shorelines and Coastal Processes-1revised...

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