EARTHSC 2GG3 Lecture Notes - Lecture 1: Natural Disaster, Rock Cycle, Inverse Relation
17 Feb 2017
School
Department
Course
Professor
Document Summary
Larger events happen less frequently making predictions harder. Disaster trends: the un designated the 1990s as the Natural hazards reduction: process - have areas that have been built different and in bad areas because of our lack of knowledge when they were initially built. Increases in the number of natural disasters: criteria. Death and damage by catastrophe: larger events become more diffiuclt to predict in future. Magnitude + frequency of hazardous effects impact. Climate,geology, vegetation,land use, population: magnitude -freq concept. As you get larger, they become less frequent but still damaging. Smaller events have higher return: the history of an area gives clues to its potential hazards. Maps, historical accounts, weather + climate data. Geologic cycle: dictates hazards, regular ocurring processes. Rock cycle: process of repurposing and reintergrating rock material of rocks ocurring on planet, rocks that occur through different processes. Rocks are changed through extreme heat, preassure/chemically active fluids.
