EOSC 114 Lecture Notes - Lecture 2: Return Period, Doubling Time
20 Apr 2018
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Hazard: any event or situation that could cause human (deaths, injuries) or economic (property and prosperity) harm. Vulnerability: a weakness that could be affected by a disasters and how badly it could be affected. Risk: probability that any given hazardous event might occur ( chance of potential loss) Could be written as: hazard vulnerability = risk. Humans do not deal well with probabilities. Lottomax to get 7/7 numbers, you have a 1 in 28,633,528 chance. Doubling time: dt (yrs) = 70/% growth rate/yr . Population: if the growth rate is 1. 2%/year, then the dt = 70/1. 2 58. 8 years to double population. If the growth rate is 1. 1%/yr, then the dt = 70/1. 1 = 63. 6 years. Carrying capacity: the population that can be sustainably supported within a given domain (e. g. , earth) Population more specifically, overpopulation population that exceeds carrying capacity. Conclusion: these are normal components of the earth system, so not disasters to.
