EARTHSC 2GG3 Chapter Notes - Chapter 1: Natural Disaster, Natural Hazard, Oceanic Crust
1 Oct 2016
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People live on fault lines, rebuilt areas, volcanoes, floodplains. Past disasters are forgotten, future ones are inevitable. Natural hazard: natural process that poses threat to human life or property. Natural disaster: natural disaster that causes significant damage to life or property. Catastrophe: natural event that kills or injures large numbers or causes major property damage. Potential impact of disaster related to size and location (number of people, buildings) More deaths related to floods and droughts. Increase in cost of natural hazards in developed countries. Number of fatalities in developing countries increased. Predict and get out of the way. Magnitude: inversely proportional to frequency (numerous small events, few large events, even fewer giant ones) Forecast: probability that natural event of a particular magnitude will happen within a certain interval, not fixed to a schedule (50 year flood chance is 1/50 every year)
