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Natural Disasters

Science of earth-related natural disasters

Principle of Catastrophism All of Earth's major features have been produced by a few great catastrophic events; popular in the 17th and 18th centuries
Principle of Uniformitarianism Same physical processes active in today's environment have bee operational throughout geologic time.
Tectonic Cycle creation, movement and destruction of tectonic plates
Rock Cycle largest, linked to all others; creates three different types of rock (igneous, sedimentary, metamorphic)
Hydrologic Cycle driven by solar energy; works by way of evaporation, precipitation, surface runoff and subsurface flow
Biogeochemical Cycle transfer of cycling of a chemical element(s) through the atmosphere, lithosphere, hydrosphere and biosphere
Convergent Plate Boundaries Greatest Earthquakes; Subduction Zones
Subduction Zone Denser oceanic crust will go under lighter continental; Oceanic = 2.9 g/cm^3, Continental = 2.8 g/cm^3
Risk product of probability of the event occurring times the consequences should it occur
Risk Analysis situation dependent
Prediction advance determination of the date, time and size of the event
Forecast announcement that states that a particular event is likely to occur during a specific time interval
Flooding provides nutrients to floodplain; fertile soils
Landslides debris forms dams, creates lakes
Volcanic Ash nutrient-rich soil
Natural Hazard natural source of danger to life, property and the environment
Natural Disaster natural event or process that destroys life and/or property; sudden event that causes great damage or loss
Catastrophe massive disaster with lots of damage and recovery is long and complex
Created by: Steckzilla