Geography 2152F/G- Midterm Exam Guide - Comprehensive Notes for the exam ( 13 pages long!)
5 Oct 2017
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Processes and natural hazards: natural hazards can arise from three main processes: Internal forces within the earth: driven by the internal energy of the earth: ex. Plate tectonics: 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. Atmospheric effects: gravitational attraction: driven by the force of gravity, ex. Examples of recent catastrophes: thailand tsunami, hurricane katrina, haiti earthquake, oil spill, japan tsunami. Magnitude and frequency: the impact of a hazard is a function of both its magnitude (i. e. energy released) and frequency. It can also be affected by other factors (geology, land use, population density: magnitude-frequency concept: there is an inverse relationship between magnitude and frequency. Understanding the risk of hazards: the history of an area can provide insight on its risk of hazards, the following provide clues, maps, historic documents, journals, aerial photos, weather and climate data, craters, faults, valleys.
