Mt. Helens Research Paper

Volcanoes can be found throughout the entire world and are formed when there is a rupture in the mantle of the Earth's crust. This effect allows the output of volcanic lava, ash, and various types of gases. These tectonic plate breaks are normal, the planet Earth is divided into 17 tectonic plates and consistently move against each other forming shifts from low to high intensity. It can cause displacement of earth or water.

It was May 18th, 1980. The eruption of Mount St. Helens occurred in Washington,United States. The exact time it had happened is at 8:32:17. The eruption happened 96 miles out South of Seattle, Washington and 50 miles northeast of Portland,Oregon. Many people died during this time. About 50 people had died. 250 homes were destroyed. Along with 47 bridges, 15 miles of railways, 185 miles of highway was also destroyed. Many tiny earthquakes had happened a couple days before the eruption had happened.

Imagine a single event that can kill 57 people and 7000 deer and elk. Snap trees like a toothpick, and turn the sky grey for 15 days. Now, stop imagining, Mount St. Helens, in the Cascade Range of southwestern Washington State, erupted. On May 18th,1980. According to (Campbell 371), “At least $1 billion in economic damage was reported”. The eruption of Mount St. Helens took many lives, and devastated America. Mount St. Helens destroyed more than 230 square miles of ancient forest.

Mount St Helens erupted on the 18th May 1980 at 9am and is an active strata volcano Washington State USA, a MEDC. Where as on 18th July 1995, during the daytime, Montserrat, a LEDC during the day, Montserrat's Soufrière Hills composite volcano of a height 1050m, meaning sulphur hills, dormant for centuries, erupted and produced a phreatic eruption. The volcano is a strata volcano also. Mount St. Helens is a composite volcano which lies near to a destructive plate boundary where the small Juan de Fuca Plate is being subducted underneath the North American Plate where as the eruption

It goes on to explain some of the Europeans to first record the sighting of the mountain which happened May nineteenth seventeen ninety-two during the surveying of the northern Pacific Ocean. It was named by Vancouver for a British diplomat, "1st Baron St. Helens," on October twentieth seventeen ninety-two, but before this local Indians had already named it louwala-clough or smoky mountain. In eighteen twenty-nine Hall J. Kelley led a campaign and planned to rename this mountain and all others after one of the United States president, he had tried to rename Mt. St. Helen to Mount Washington. As horrible as the explosion in May og nineteen eighty claimed lives the paper says if the explosion had waited just one day later on Monday rather Sunday when all the people were at work such as loggers they believe the death poll would have been much more higher. A second eruption was noted to had occurred on may twenty-fifth, noone was thankfully hurt and a rather popular film was then created named The Eruption of Mount St. Helen. After all that occurred with the volcano and all it put everyone through president Ronald Reagan in nineteen eighty-two established the Mount St. Helens National Volcanic Monument, which still to this day remains a famous natural laboratory for the study of earth processes,nature, and catastrophes. The volcano and the area surrounding still have a long way to go before it recovers and has all the things it had

St. Helens, and how it changed. It was beautiful, before the eruption. Mt. Hood was jagged, and Rainier was a funny shape. But Mt. St. Helens was a perfect dome, snowcapped, with Spirit Lake spread out far below. I remember a man telling me that they thought a bomb had gone off. It shook the house. They thought maybe next door the neighbors were setting off fireworks. They lived over 90 miles from the volcano. All of the streetlights came on in the middle of the day, as a fine layer of ash darkened the sky. People living near the volcano were simply smothered under a heavy

Mount St. Helens Location: Washington, United States Latitude: 46.20 N Longitude: 122.18 W height: 2,549 meters or 8,364 feet - 9,677 feet before May 18, 1980 Type: Stratovolcano Number of eruptions in past 200 years: 2-3 Latest Eruptions: Between 1660-1700, around 1800-1802, 1831, 1835, 1842-1844, 1847-1854, 1857, 1980-? Present thermal activity: strong steaming Nickname: Mount Fuji of the West Remarks: continuous intermittent activity since 1980 with occasional eruptions of steam and ash; occasional pyroclastic flows; intermittent dome forming. MSH is considered a young volcano that developed over the last 40,000 years and is one of the most active volcanoes in the Cascade Range. Geologists predicted that the

Mount St Helens erupted on May 18th,1980. The ash covered everything all the way to the Idaho border. Mount Saint Helens was the biggest volcano in Washington. The eruption was also one of the biggest in a while. So many parents/grandparents in the Washington area remember it. I interviewed my mom to tell me what it was like.

There were minor eruptions in 1898, 1903, 1932, and most of the 20th century. None of these came close to the damage that the 1980 eruption caused. The eruption lasted over 2 months and caused that one side of the slope being the north side was destroyed from the magma. This volcano had ash flow into 11 different states. Out of the 11 states that experienced it’s eruption, 57 people died due to the eruption of Mt. St. Helens. Some state highways and roads had to be closed and highway repairs alone run into hundreds of millions of dollars. Many pieces from the mountains were rushing down the mountain and onto the ground at 300 miles per hour. Trees, some 200 feet high, were stripped of branches and bark. Some old growth trees

Figure 1: Mount St. Helens location activity in 1980 were observed in the middle of March when earthquakes were detected beneath the volcano. There were many quakes each day and the largest ones were felt by people in the nearby area. At 8:32 am PDT on May 18, 1980, Mount St. Helens erupted following a magnitude 5.1 earthquake that began about 1.5 km below the volcano (Tilling, Topinka, & Swanson, 1984). This was the most devastating event in the two months of activity. The top 400 m of the mountain were blown away, 500 km2 of the Gifford Pinchot National Forest was covered with grey ash and 57 lives were lost (Zeilinga de Boer & Sanders, 2002).

The eruption killed 57 people, in the lateral blast, ashfall, and lahars. The causes to death included asphyxiation, thermal injuries, and trauma. Four indirect death were caused by a crop duster hitting power lines during the ashfall, a traffic accident during poor visibility, and two heart attacks from shoveling ash. The Toutle River was flooded by melting snow and ice from the mountain. About 12 million board feet of stockpiled lumber were sweep in the river, eight bridges were destroyed, 200 homes were destroyed or damaged, debris dams were added to help control sediment in the rivers. Thirty logging trucks, 22 transport vehicles, and 39 rail cars were damaged or destroyed along with 4.7 billion board feet of timber. Shipping was stopped on the Columbia River and some vessels were stranded (Oregon State). In eastern Washington, falling

14) The residents of Enumclaw, Washington, live in the shadow of majestic Mount Rainier and its 26 glaciers. The Cascades form a ring of fire around the Pacific Northwest and erupt with surprising regularity, although Mount Rainier hasn't erupted on a major scale since about a thousand years ago. When it does erupt, the pyroclastic flow (a massive cloud of superheated ash and rock up to 1500 degrees Fahrenheit that can travel at speeds up to 300 miles per hour) will make Enumclaw a less pleasant place to live. City leaders have completed the:

He wrote several major publications on the topic, including his doctoral dissertation on Mount St. Helens. In 1991, while conducting avalanche research with volcanologists Katia and Maurice Krafft on Mount Unzen in Japan, Glicken was killed by a wayward pyroclastic flow. Glicken and David A. Johnston (who died at Mount St. Helens) remain the only American volcanologists known to have perished in volcanic eruptions. After Glicken's dissertation was published by his colleagues in 1996, the report was widely cited. His detailed and comprehensive work on flows at Mount St. Helens is considered the most

Boer, Sanders, and Donald cooperate in writing about momentous volcanic eruptions in history. The authors review accounts from various people who have witnessed powerful eruptions. In conclusion, the authors find that volcanoes have changed societies as a whole. Volcanoes have affected both culture and environment. In Hawaii, volcanoes have influenced religious beliefs. The authors come to find that volcanoes have a significant impact on more than the environment.

A substantial toll of life and property. Some of these losses could be reduced by better.