EASC 104 Lecture : Easc Lecture #7 Explosive eruptions.docx
27 Dec 2012
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Document Summary
Hawaiian eruptions are the lowest levels of eruptions and are quiet. Vulcanian you get an explosive eruption that causes an ash cloud to go up into the stratosphere. This scale is based on how much volume of magma/rock is erupted. How high this bloom gets into the atmosphere. Ultra plinian super volcanoes major elements of environmental changes: can affect global temperature. Cambora eruption resulted with a year without a summer. Spreads into the upper atmosphere which can reach all around the world. Hazard: some volcanoes can collapse and create pyroclastic flow. Effects of eruptions on solar radiation and climate. Temperature can help us detect climate changes these factors can tell us the characteristics of volcanic eruptions in areas. These are more of a risk to buildings and infrastructures and less of a risk to humans. Aa-- has a steep front and a rigid rough surface.
