costal erosion
COASTAL MANAGEMENT REVIEW SHEET
Coastal Erosion Subject Review
The following reports and articles contain the information needed to complete this worksheet:
“Evaluation of Erosion Hazards” prepared by the H. John Heinz III Center for Science, Economics and the Environment (summary report) http://www.heinzctr.org/NEW_WEB/PDF/erosnsum.pdf
“Mapping Coastal Change Hazards” U.S.G.S. website beginning at http://coastal.er.usgs.gov/hurricanes/mappingchange/
“Coastal Erosion: Where’s the Beach?” Bridge Data Tip at http://www.vims.edu/bridge/archive0500.html
“Beaches on the Brink” CNNfyi.com article at http://archives.cnn.com/2000/fyi/news/09/20/coastal.erosion/index.html
1. Beach sand originates mainly from Beach sand originates mainly from rivers and streams which carry it directly to the ocean, and also comes from the gradual weathering of exposed rock formations and cliffs along the shore, and from the deterioration of shell, coral, and other skeletal fragments.
2. Coastal erosion is a natural process that removes sediment from shorelines. Another natural process that deposits sediment on shorelines is known as Accretion of sediments.
3. Sand is generally moved offshore by high-energy waves during storms months, and is returned by gentle waves during calm weather months.
4. Movement of sand parallel to the coast by wave action, wind, and currents is known as long shore transport.
5. Sea walls, jetties, and bulkheads may contribute to erosion because they affect natural water currents and prevent sand from shifting along coastlines to replenish beaches.
6. The first dune ridge or beach berm (if there is no dune present) are the “first line of defense” against coastal erosion from wind and waves.
7. Barrier islands are composed primarily of sand and are the most dynamic land masses along the open-ocean coast.
8. The impact of a storm on a barrier island is dependent on storm characteristics and the elevation of the barrier island when the storm makes
Coastal Erosion Subject Review
The following reports and articles contain the information needed to complete this worksheet:
“Evaluation of Erosion Hazards” prepared by the H. John Heinz III Center for Science, Economics and the Environment (summary report) http://www.heinzctr.org/NEW_WEB/PDF/erosnsum.pdf
“Mapping Coastal Change Hazards” U.S.G.S. website beginning at http://coastal.er.usgs.gov/hurricanes/mappingchange/
“Coastal Erosion: Where’s the Beach?” Bridge Data Tip at http://www.vims.edu/bridge/archive0500.html
“Beaches on the Brink” CNNfyi.com article at http://archives.cnn.com/2000/fyi/news/09/20/coastal.erosion/index.html
1. Beach sand originates mainly from Beach sand originates mainly from rivers and streams which carry it directly to the ocean, and also comes from the gradual weathering of exposed rock formations and cliffs along the shore, and from the deterioration of shell, coral, and other skeletal fragments.
2. Coastal erosion is a natural process that removes sediment from shorelines. Another natural process that deposits sediment on shorelines is known as Accretion of sediments.
3. Sand is generally moved offshore by high-energy waves during storms months, and is returned by gentle waves during calm weather months.
4. Movement of sand parallel to the coast by wave action, wind, and currents is known as long shore transport.
5. Sea walls, jetties, and bulkheads may contribute to erosion because they affect natural water currents and prevent sand from shifting along coastlines to replenish beaches.
6. The first dune ridge or beach berm (if there is no dune present) are the “first line of defense” against coastal erosion from wind and waves.
7. Barrier islands are composed primarily of sand and are the most dynamic land masses along the open-ocean coast.
8. The impact of a storm on a barrier island is dependent on storm characteristics and the elevation of the barrier island when the storm makes