GEOG 1350 Lecture Notes - Lecture 1: Natural Disaster, Surface 2, Aka Island
20 Feb 2015
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Document Summary
Natural hazards: affects millions of people around the world. Magnitude and frequency: the impact of a hazard is a function of both its magnitude (i. e. energy released) and frequency. * magnitude-frequency concept: asserts tht inverse exponential relationship exist b/w magnitude of event and its frequency. Hydrologic cycle: def: cycling of water from ocean to atmosphere to continents and islands and back again to the ocean. Solar energy drives the movement of water among the atmosphere, oceans, and continents: evaporation -> precipitation -> surface runoff -> subsurface flow: along the way water store in diff compartments. It is also referred to as the water cycle. Solar energy drives the movement of water among the atmosphere, oceans, and continents. Hazardous processes are natural: these events are natural forces; they only become hazardous when they disrupt human activity. Understanding hazardous processes to evaluate risk: acceptable risk is the amount of risk that an individual or society is willing to take.
