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Session 6 : Major Coastal Hazards Part I

Session 6 : Major Coastal Hazards Part I. 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. (Courtesy: http://www.nasa.gov/). Session 6: Coastal Hazards I

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Session 6 : Major Coastal Hazards Part I

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  1. Session 6 : Major Coastal Hazards Part I 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. (Courtesy: http://www.nasa.gov/) Session 6: Coastal Hazards I Coastal Hazards Management Course Slide 6. 1, Lecture Outline

  2. Introduction: What is a Coastal Hazard? • Coastal Hazards can be defined as natural hazards that occur within the coastal zone. • The following major coastal hazards will be discussed in this session: • Hurricanes • Coastal Erosion • Tsunami • Flooding (Courtesy: www.hyperreal.org/~mike/livejournal/) (Courtesy: http://www.library.yale.edu/MapColl/hyannis.htm) (Courtesy: www.missouri.edu/~geoscmbu/ ocean2003.html) (Courtesy: www.electrofin.com) Session 6 : Coastal Hazards I Coastal Hazards Management Course Slide 6. 2, Introduction

  3. What is a Hurricane? (Courtesy: http://www.mthurricane.com/hurricanes.htm) (Courtesy: NOAA Photo Library) (Courtesy: http://hpccsun.unl.edu/nebraska/Gtrack.html) Hurricanes can take very variable tracks (Courtesy:http://www.weatherstock.com/hurricanecat-science2.html) Session 6: Coastal Hazards I Coastal Hazards Management Course Slide 6. 3, Hurricanes

  4. What is Coastal Erosion? 1890 1970 1920 1990 (Black-and-white photographs courtesy of Pacific Studios, Newport, Oregon.Color photographs taken by Parke D. Snavely, Jr. of the USGS.) Session 6: Coastal Hazards I Coastal Hazards Management Course Slide 6. 4, Coastal Erosion

  5. What is a Tsunami? Tsunamis can be triggered by earthquakes, volcanoes or landslides (Courtesy: users.belgacom.net) (Courtesy: National Weather Service) Monitoring takes place on buoys (Courtesy: FEMA) Session 6 : Coastal Hazards I Coastal Hazards Management Course Slide 6. 5, Tsunamis

  6. What is a Flood? • There are two types of floods • Flash Floods • Riverine Floods (Courtesy: http://www.sci.muni.cz/botany/gallery/lf109.jpg) Riverine floods are common in low lying, sandy coastal areas, whereas flash floods are more common along rocky coasts (Courtesy: www.utahweather.org) Session 6: Coastal Hazards I Coastal Hazards Management Course Slide 6. 6, Floods

  7. Distribution of Hurricanes (Courtesy: NOAA) (Courtesy: ww2010.atmos.uiuc.edu ) • Hurricanes can take many different tracks, but are limited to the Western Hemisphere. Cyclones and typhoons are found elsewhere in the world. Session 6: Coastal Hazards I Coastal Hazards Management Course Slide 6. 7, Hurricane distribution

  8. Distribution of Coastal Erosion (Courtesy: US Army Corps of Engineers) (Courtesy: The Heinz Center Evaluation of Erosion Hazards) Coastal Erosion is very localized. Some sections of sandy beaches will erode, while close by another section will accrete sand. Session 6: Coastal Hazards I Coastal Hazards Management Course Slide 6. 8, Coastal Erosion distribution

  9. Distribution of Tsunamis (Courtesy: http://www.geophys.washington.edu/tsunami/general/historic/historic.html) A map of large tsunamis of recent history that were generated by earthquakes Session 6 : Coastal Hazards I Coastal Hazards Management Course Slide 6. 9, Tsunami distribution

  10. Distribution of Floods (Courtesy: www.nhoem.state.nh.us) Session 6: Coastal Hazards I Coastal Hazards Management Course Slide 6. 10, Flood distribution

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