EESB18H3 Lecture Notes - Magma Chamber, Hot Spring, Soil Fertility
6 Feb 2014
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Document Summary
The most famous caldera in na is yellowstone. This truly massive volcano is a hot spot that erupts about every 600,000 years. Ash falls: can cover vast areas of landscape. The ash is like a very fine powder, it is known to choke aircraft engines, and it a hazards for generating lahars. Famine: the culprit is ash if it travels all over the earth because it is a physical barrier to sunlight and planet became colder. Gas emissions: may be toxic or corrosive, the most common is water and the most hazardous one is carbon dioxide which can cause suffocation by driving away oxygen; trees can be killed by this. Sometimes they have vents at the bottom at the lakes because magma sits close to the surface. Mitigation of this is being carried out by reducing the co2 content of the lakes; a suspended pipe draws co2 saturates water from the depths of the lake (they release it)
