GEOG 1350 Lecture Notes - Lecture 1: Plate Tectonics, Rock Cycle, Subduction
26 Oct 2016
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Document Summary
Hazards affect millions of people around the world each year. Within na, every location is at risk from at least 1 hazardous process. Examples: west coast: quakes, landslides, east coast: hurricanes, mid-continent: tornadoes, blizzards, everywhere: drought. Natural hazards can arise from 3 main processes: Internal forces within the earth: driven by internal energy of the earth. External forces on the earth"s surface: driven by the sun"s energy. Gravitational attraction: driven by force of gravity. Natural hazard: a natural process that poses a potential threat to people and property. Risk: (probability of an event occurring) x (impact on the people and property) Disaster: a brief event that causes global damage or loss of life. Natural hazards differ in their potential to cause a catastrophe based on the size of the area affected: more likely to be catastrophic: tsunamis, quakes, volcanoes, hurricanes, floods, less likely: landslides, avalanches.
