01:450:102 Lecture 14: 14. Vulnerability, Disasters, & Development
28 Jan 2020
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Document Summary
Natural disasters have typically been seen as removed from the usual order of things. Unexpected or uncontrollable natural event of unusual magnitude that threatens the activities of people or people themselves. Natural hazard that actually resulted in widespread destruction of property or caused injury and/or death. Disaster risk = (hazard * vulnerability)/(capacity to cope) Tsunami japanese for harbor wave, waves with very long wavelengths. Kai e"e hawaiian for tsunami wave. Kai mimiki hawaiian for wave trough (withdrawal of water before kai e"e) Sudden rise or fall of earth"s crust under or near ocean. Creates rise or fall in level of ocean above. Size and energy dissipates with time and distance from source. Volcanic activity, mudslides can also cause tsunamis. Shallow water, speed slows but energy remains same. Appears as a rapidly rising or falling tide. Waves may rise up to 50-100 ft (runup) Alaskan tsunamis: earthquakes or landslides along the aleutian trench. Region exposed to a range of hazards.
