Map Your Hazards! Combining Natural Hazards with Societal Issues

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Presentation transcript:

Map Your Hazards! Combining Natural Hazards with Societal Issues Introduction to Natural Hazards Map Your Hazards! Combining Natural Hazards with Societal Issues

What is a Natural Hazard? A naturally occurring event that could harm us directly or indirectly. What are some examples of natural hazards?

What Causes Natural Hazards? Nature What are some examples of natural processes that cause natural hazards?

What Causes Natural Hazards? Natural Process Natural Hazard Movement and melting of tectonic plates Movement of water through atmosphere, land and oceans Movement of rocks and soil through weathering and erosion Flooding Sinkholes Droughts Earthquakes Volcanoes Tsunamis Landslides Optional slide: This might be good for social science classes. This might be redundant and unnecessary in geoscience classes that already covered natural hazards. Match natural processes with natural hazards they cause (multiple answers possible)

When Do Natural Hazards Become Natural Disasters? When a naturally occurring event significantly harms us directly or indirectly Public domain image from NOAA http://en.wikipedia.org/wiki/2011_Joplin_tornado#mediaviewer/File:22_May_2011_Joplin_tornado_damage.jpg Joplin tornado, EF-5, May 2011

When Do Natural Hazards Become Natural Disasters? A massive avalanche in the Alaskan interior 0 deaths $0 in property damage Natural disaster or not? Public domain image from NOAA http://earthobservatory.nasa.gov/IOTD/view.php?id=83195 Southeastern Alaskan landslide, 2010

When Do Natural Hazards Become Natural Disasters? Khait or Hoit landslide occurred on July 10, 1949, in Tajikistan (formerly part of the Soviet Union) The landslide was triggered by an earthquake 33 villages were buried, killing 28,000 people Natural disaster or not? Public domain image from USGS http://en.wikipedia.org/wiki/Khait_landslide#mediaviewer/File:USGS_Khait_landslide.jpg Village of Khait and Khait landslide, 1949

Can We Affect Natural Hazards? How are we connected to the frequency and occurrence of hazards? How are we connected to the magnitude of natural disasters? How do we positively and negatively affect our environment?

What Can We Do about Natural Hazards? Natural Hazard Mitigation is action taken to reduce or eliminate negative impacts of a natural hazard Pre-event (anticipatory) Post-event (reactive) Public domain image from FEMA http://en.wikipedia.org/wiki/American_Red_Cross#mediaviewer/File:FEMA_-_15337_-_Photograph_by_Andrea_Booher_taken_on_09-10-2005_in_Texas.jpg Volunteers assist Hurricane Katrina victims at the Houston Astrodome. What are some examples of pre-event and post-event mitigation?

What is Natural Hazard Mitigation? Pre-event (anticipatory) Post-event (reactive) Land-use planning Insurance Evacuation Disaster preparedness Artificial control of natural processes Etc. Homeless shelters Emergency food, water and medical services Search and rescue efforts Firefighting Clean-up Etc. What would you include in a natural hazard mitigation plan?