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Chapter Slides/Study Guides - COASTAL PROCESSES The...

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Unformatted text preview: COASTAL PROCESSES The threatened Lighthouse at Cape Hatteras had three options as the Beach was being eroded dangerously close to the structure Construct a wall around it (very expensive $5.6 million) Do nothing and lose it Move the lighthouse inland ($12 million) The lighthouse was moved and the storm in 1999 damaged the original Location but not the lighthouse at the new location Facts • United States has 150,000 miles of coastline and the coastal states contain about 75% of our population • There are considerable property at the coastal regions that can be damaged • Around 80% of our population lives 20 miles or so from a coastline Coastal Hazards • Tropical Cyclones • Tidal Floods – high tides and storm surge • Tsunamis – earthquakes in ocean • Coastal Erosion – property damage that requires human adjustment Tropical Cyclones • Hurricanes in the Atlantic ocean between 8N and 15S • Threaten the Gulf States: FL, GA, SC, LA • Three storm tracks are possible (notice track 3 is the worst for SC) • Hurricanes derive their strength by moving over the warm waters of the Atlantic Ocean fed by evaporating ocean water – warmer water, stronger winds • Storm surges could be as much as 10m • Hurricane Andrew (1992) cost $25 billion • Hurricane scale is a quantitative evaluation for strength of hurricanes Hurricane Isabel September 18, 2003 Tropical Cyclones...
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This note was uploaded on 02/10/2011 for the course GEOL 103 taught by Professor Lakshmi during the Spring '10 term at South Carolina.

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Chapter Slides/Study Guides - COASTAL PROCESSES The...

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