GEOL 111 Lecture Notes - Lecture 4: Geotextile, Lake Peigneur, Permafrost

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

Document Summary

Heat + drought, earthquake, landslides, mudflows, ground settling or swelling. 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. Research into nature and behavior of hazards, find ways to predict events, mitigate damage and loss of life. The heat responsible for melting rock and generating magma comes from the earth"s core. This heat is conducted towards the earth"s surface through the mantle and crust, convection cells in the mantle distribute heat from the lower mantle towards the upper mantle and crust. The interior of the earth is mainly composed of igneous silicate rocks.