GEOL 111 Lecture Notes - Lecture 3: Rodinia, Seattle Fault, Anchorage, Alaska

• School: Iowa State University
• Department: Geology
• Course: GEOL 111
• Professor: Ankerstjerne Suzanne

Document Summary

Natural hazard: natural process which poses threat to human life or property. Natural disaster: natural event that causes significant damage to life or property. Catastrophic: natural event that kills or injures large numbers of people or causes major property damage. Recurrence interval: probably that natural event of particular size will happen within certain period of time, on average. Risk: hazard considered in light of recurrence interval and expected costs. Heat + drought, earthquake, landslides, mudflows, ground settling or swelling. The difference between predicting and forecasting hazardous events. Prediction specifies time, date, location and strength of an event. Some natural events have predictable cycles but usually too many variables and overlapping cycles. Hazard is condition that increases severity or frequency of loss. Risk a [probability of occurrence] x [cost of probable loss from event] Research into nature and behavior of hazards - find ways to predict events, mitigate damage and loss of life.