EARTHSC 2GG3 Lecture Notes - Tephra, Mudflow, Fluorine
1 Apr 2013
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Document Summary
Krakataua, indonesia famine and disesase combined deaths. Most cause of death is famine and disease, then tsunami, then pdc. Cities pump water into volcano to cool it. Higher temperatures above an erupting volcano draws in outside air that rises and cools. Moisture in the air condenses to form rain. Dense micture of hot tephra and superheated gases that pour rapidly downslope. Welded tuff: ash from a hot pdc that is hot enough when deposited that the particles fuse together to form a solid rock. White grey tephra indicates high silica content. Lines surge cross beds - layer of different ask layers. Part of island fell into ocean atlantis. Mt hens blast flattened tress on windward side of volcano. Lighter parts of pdc (gases) float and skim over the water as the denser mediums fall. Energy lines can show what regions can be affected by pdc. Height of hill where pdc will cover. Some explosions have pdc and other don"t because:
