EESB18H3 Chapter Notes -Asthenosphere, Lithosphere, Risk Assessment
24 Apr 2014
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Document Summary
Key determinants in # of deaths: popn density and quality of infrastructure. Seismic stations around the world recorded effects of the earthquake december 26, This earthquake released as much energy as every earthquake on earth between 1976 and 1990 combined. The earthquake triggered a series of waves called tsunami killed over 250 000 ppl. Economic losses due to natural disasters have increased exponentially since the 50s. Most expensive ones happen in the us. Classical hazards include: earthquakes, volcanoes, landslides, floods, tornadoes, hurricanes, erosion, bolide impact. Risk assessment: we will learn how to tell whether we are about to buy or rent a house. Probability of event occurring multiplied by impact on people and property. Effect of hazard on society: property damage, injury, loss of life. Massive disaster some of the worst disasters are relative smalel events. Also influenced by other factors(climate, geology, vegetation, land use, popn) M = fe x history of an area gives clues to potential hazards.
