EARTHSC 2GG3 Lecture Notes - Lecture 1: Natural Disaster, Plate Tectonics, Surface Runoff
11 Sep 2018
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Document Summary
Natural processes and energy sources: processes are physical, chemical, and biological ways in which events affect earth"s, external processes come from forces on earth"s surface surface. Internal processes come from forces within earth: plate tectonics, result of internal energy of earth, atmospheric effects, energy from the sun. Hazard: probability that a specific damaging event will happen within a particular period of time. Risk: a function of the hazard, exposure, vulnerability, and coping capacity. Disaster: hazardous event that occurs over a limited time in a defined area. Catastrophe: massive disaster that requires significant amount of money or time to recover. Disaster trends: recently, there has been an apparent increase in natural disasters, the un designated the 1990s as the international decade for natural hazards, mitigation to reduce the effects of something; natural disaster preparation. Reduction: those hazards that have a great impact on human life may not cause the most property damage, hazards vary greatly in their ability to cause catastrophe.
