Geography 2152F/G Lecture Notes - Lecture 1: Ozone Depletion, Plate Tectonics, Acid Rain
31 Oct 2018
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In the artic region: ozone depletion, acid rain, an issue in our part of the world, pollutants mixed with raindrops. Infrastructure failure (aging, old bridges, etc. : shipwrecks, airplane crashes. Natural hazards can arise from three main processes: internal forces within the earth, driven by the internal energy of the earth, heat and convection drives the currents, layers of earth (mantle, core, etc. , ex. Plate tectonics, earthquakes: e(cid:454)ter(cid:374)al for(cid:272)es o(cid:374) earth"s surfa(cid:272)e, dri(cid:448)e(cid:374) (cid:271)(cid:455) the su(cid:374)"s e(cid:374)erg(cid:455, ex. Even a snow storm can get its energy from the sun: ex. Meteorites: gravitational attraction, driven by force of gravity, ex. Definitions: hazard: a process that poses a potential threat to people or the environment, pote(cid:374)tial: does(cid:374)"t mean it is necessarily going to play out. Magnitude & frequency: the impact of a hazard is a function of both its magnitude (i. e. energy released) and frequency.
