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These sessions will introduce the basic natural processes,
historical geographic ranges, and potential
impacts of the natural hazards that
are unique to the coastal zone.
Session 6 - 7: MajorCoastal Hazards
(Session 7: Part II)
(Courtesy: http://www.nasa.gov/)
Session 7: Coastal Hazards IICoastal Hazards Management CourseSlide 7. 0, Lecture Outline
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Other Coastal Hazards: Nor’easter
Session 7: Coastal Hazards IICoastal Hazards Management CourseSlide 7. 1, Nor’easters
(Courtesy: NOAA)(Courtesy: www.mcwar.org)
• Nor’easters are similar to hurricanes, but rotate in the opposite direction and occur more often in the winter time
The Dolan-Davis Nor’easter Intensity Scale
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Other Coastal Hazards: Hurricane and Nor’easter Related
Session 7: Coastal Hazards IICoastal Hazards Management CourseSlide 7. 2, Related Hazards
(Courtesy: NOAA Photo Library)
Storm Surge, High Wind, Torrential Rain, Severe Winter Weather, and Waterspout all can occur as a result of hurricanes or nor’easters.
(Courtesy:http://www.weatherstock.com/)
Waterspout Storm Surge
Torrential Rain
High Wind
(Courtesy: NOAA)
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Other Coastal Hazards: Rip Current
Session 7: Coastal Hazards IICoastal Hazards Management CourseSlide 7. 3, Rip Current
(Courtesy: NOAA)• A rip current from the air
Rip current is also a unique hazard in the coastal zone
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Impacts: Natural Environment
Session 7: Coastal Hazards IICoastal Hazards Management CourseSlide 7. 4, Environmental Impacts
(Courtesy: John Bruno)
Natural disturbances from hazards have an effect on coastal ecosystems such as coral reefs and seagrass
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Session 7: Coastal Hazards IICoastal Hazards Management CourseSlide 7. 5, Human Impacts
(Courtesy: John Bruno)
Sandy beach/barrier island development
Impacts: Human Environment
Disasters occur when the human built environment meets natural hazards
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Disasters: Hurricanes
Session 7: Coastal Hazards IICoastal Hazards Management CourseSlide 7. 6, Human Impacts due to Hurricanes
(Courtesy: FEMA)(Courtesy: NOAA Photo Library)
On average, hurricanes kill 80 people per year in the US and Hurricane Andrew alone caused more than $25 billion in damages
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Disasters: Coastal Erosion
Session 7: Coastal Hazards IICoastal Hazards Management CourseSlide 7. 7, Human Impacts due to Coastal Erosion
(Courtesy: NASA)
(Courtesy: USGS)
Coastal Erosion predictions for a sectionof shoreline in Delaware show the possible extent of destruction to the built environment over time
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Disasters: Tsunami
Session 7: Coastal Hazards IICoastal Hazards Management CourseSlide 7. 8, Human Impacts due to Tsunami
(Courtesy: The Honolulu Advertiser )
Downtown Hilo, Hawaii after the 1960 Chilean Tsunami
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Disasters: Flooding
Session 7: Coastal Hazards IICoastal Hazards Management CourseSlide 7. 9, Human Impacts due to Flood
(Courtesy: Washingtonpost.com)
(Courtesy: NOAA)