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ND - Chapter One
Natural Disasters & the Human Population
| Question | Answer |
|---|---|
| Natural Disaster | A naturally-occurring event that results in loss of life and/or property. “Great” > 1,000 killed, >100,000 homeless, overwhelms economy requires international assistance to rescue, care, clean up, etc Avg great natural disasters per year: 5.6 |
| Stages of Effects of Natural Disasters | Primary: result of the event itself Secondary: result of the primary effect Tertiary: long-term effects as a result of a primary event |
| Human Fatalities | Biggest single event killers (in order): hurricanes and earthquakes, tsunami, floods, severe weather, landslides, volcanic eruptions, tornadoes Most mega-killer disasters occur in Asia (>75%) China, Bangladesh, India, Iran, Turkey |
| Frequency/Magnitude | Inverse correlation between frequency and magnitude (in terms of fatalities and economic losses) Most frequent hazard is tornados (>250/year) Most are in the U.S. #2=floods #3=hurricanes #4=earthquake #5=tsunami |
| Vulnerability to Natural Hazards | Proximity Population density Public awareness Scientific understanding prediction Early warning systems Emergency infrastructure Construction codes Cultural factors |
| Hazard Mitigation | Mitigation prior to event Engineering, physical, social and political plans and actions to reduce death and destruction from natural hazards. Includes prediction, early warning Mitigation after event Rebuilding and re-inhabiting same site |
Created by:
amiller21.1
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