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Mt St Helens Research Paper

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Some hazards of an eruption of Mount Saint Helens are a pyroclastic flow which is a hazardness fast-moving current of hot gas and rock (collectively known as tephra). It can reach speeds moving away from a volcano of up to 450 mph and reach temperatures of about 1,830 °F. Volcanic ash is another hazard and is up made of tiny fragments of jagged rock, minerals, and volcanic glass. Volcanic ash is hard, abrasive, and does not dissolve in water. Generally, particles of volcanic ash are 2 millimeter across or smaller. If ingested can result in death. Volcanic Gasses can cause danger to people, animals, agriculture, and property. Sulfur dioxide, carbon dioxide, and hydrogen fluoride are the most dangerous. Sulfur dioxide gas can lead to acid rain …show more content…
The VEI number of this volcano is 4. This is because it will be larger than normal but within reason compared to others.Mount St. Helens is an active stratovolcano located in Skamania County, Washington. St. Helens sits within the Casade Mountain range which was created by a subduction plate boundary. The last major eruption was on May 18, 1980, an earthquake struck below the north face of Mount St. Helens, triggering the largest landslide in recorded history and a major volcanic eruption that scattered ash across a dozen states. The sudden lateral blast destroyed 1,300 feet off the top of the volcano, sending shockwaves and pyroclastic flows across the surrounding landscape. 57 people died in the disaster. Since 1980 there have been numerous eruptions.The first piece of evidence that shows that an eruption of Mount St. Helens is imminent is that there has been enormous earthquakes. Earthquakes are the result of rock cracks that are caused when maga exerts pressure on the rocks until it cracks the rock. This shows an eruption coming because once the plumbing system opens magma flows and an eruption

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