EESA06H3 Chapter Notes - Chapter 5: Mass Wasting, Social Vulnerability, Tephra
17 Jul 2013
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Document Summary
Hazard threatens human life and property; the process itself is not a hazard, rather, it becomes a hazard only when threatening human interests. Risk: probable severity that a destructive event will occur multiplied by the event"s likely impact on people and property; risk thus integrates hazard and social vulnerability. Disaster: an event that causes serious injury, event that causes serious injury, loss of life, and property damage over a limited time and within a specific geographic area. Volcanic explosion at the hot spot or mor is not violent because they are shield volcanoes and they have basaltic magma. The violent explosions occur at the subduction zones (converging) because of felsic magma (thick and blocks gases violent). Volcanic hazards lava flows, tephra aka ash fall (this can block sunlight if ash is sent into the atmosphere and the plants die, people starve, etc).
