How Are Mount St. Helens Related To Volcanoes

Let’s begin with Mount St. Helens which is located in the pacific northwest of the United States. To be more specific it is located in Washington State and is a part of the Cascade mountain range that spans from California to Canada. It is a composite volcano, which has steep sides that are formed by alternating layers of lava

Kilauea is a volcano in the Hawaiian Islands it is one of the five shield volcanoes in the Hawaiian language Kilauea means spewing or spreading. Mt St. Helens is an active stratovolcano in Washington it is named after British diplomat lord st Helens.

Volcanoes are one of the most destructive, yet, most beautiful things on Earth. They can make a famous city choke in its own ashes in one day, like Pompeii. Or they can turn a once damaging mountain into a graceful and peaceful home for new life, like Mount St. Helen’s. All volcanoes are unique, and no two are the same. Some erupt differently than others, some look different than others, and all are located in different spots all over the world. I learned this while completing the project and the five volcanoes I researched are examples of my discoveries. The five volcanoes I researched were Mount Hood, Mount Mageik, Long Island, Mount Muria, and Las Pilas.

In the early 1900s St.Pierre on the French Caribbean island of Martinique was famous tourist destination.”It was known as the Paris of the west Indies”, and home to more than 20,000 people,Mount Pelee sits about 4 miles from St Pierre.On May 8, 1902 the volcano erupted. Sending a volcanic surge directly at St.pierre's at a rate of 420 miles per hour.Killing 30,000 people in its wake.National National Geographic News”Deadliest volcano of the 20th century, 100 years later””molly pell and channo wOodage for National Geographic News, 5-8-2”

Mt. Rainer is located in Washington, US on the North American Continent. More specifically it can be found at 46.8523° N, 121.7603° W. Ashford is the closest city to Mt. Rainer. Mt. Rainer was formed by the Juan de Fuca plate and the North American Plate. This plate boundary is convergent in nature, the Juan de Fuca plate is submerged beneath the North American Plate. Mt. Rainer is a stratovolcano, they are characterized by periodically active composite volcanoes. Mt. Rainers lava has alternated between explosive and nonexplosive lava over the past million years. The lava is andesite and dacite lava. Its eruptions are explosive and nonexplosive. At one point in the past it had an explosive eruption that blew off the top of the peak. No ash is shot out of the volcano at the time of eruptions,

Martin, Sean. “Mt St Helens: Fears Volcano Responsible for Deadliest Eruption in US History Is RECHARGING.” Express.co.uk, Express.co.uk, 8 June 2017, www.express.co.uk/news/science/814620/Mt-St-Helens-LATEST-volcano-recharging.

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.

On May 18th, 1980 one of the worst volcanic eruptions occurred in the United States. Triggered by an earthquake, Mount St. Helens erupted in Washington State at 8:39am. According to the National Oceanic and Atmospheric Administration, it was "the deadliest and most economically destructive event in the history of the United States." There were many effects from this terrible, natural event. People, animals, and the environment were all effected.

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

Mount St. Helen is a very active volcano classified as a stratovolcano, stratovolcano is basically a tall volcano built up of layer after layer of hard lava, tephra, pumice, and volcanic ash. Mount St. Helens location is in Skamania County in Washington, with coordinates of 46 12'00.17"N122 11'21.13"W. Mount St Helen is famous because of its catastrophic eruption on May eighteenth in nineteen eighty. The eruption measured a five on the volcanic explosivity index. This is an index created by Chris Newell and Steven Self in the year nineteen eighty-two it was designed to try and measure the explosiveness of volcano eruptions to determine the value of the explosivity and qualitative observations ranging from zero to eight, eight being the

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

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).

Mount Tambora is known as one of the most dangerous volcanoes in history. It is recognized to have one of the most hazardous eruptions, the 1816 eruption, with the death toll of 72,000 and more people.

Some of the history comes from the destructive volcanoes, Mount Vesuvius and Mount St. Helens. First, in 1978 volcanologists, warned that Mount St. Helens, in Washington State, USA , would erupt before the end of the century. On May 18, 1980, there prediction became true with horrifying consequences. The disaster began with a large earthquake at 8:32 that morning with a Richter Scale of 5.1, and triggering a series of explosions that increased in frequency and intensity. The eruption reached its peak with a violent explosion at 3:50 in the afternoon, causing the largest debris avalanche ever to be recorded to power 14 miles west! On top of this a large cloud of ash rose up to 15 miles into the atmosphere. The combined results of the seismic activity rose throughout the day causing the devastation of the landscape. The environmental cost was one thing, but the human cost was to be even more significant. Moments after the main avalanche, an explosive blast ripped through the area destroying everything in its path, killing 57 people. Another historic event of the volcanoes, is Mount Vesuvius in Naples, Italy and it remains one of the most dangerous volcanoes in the world, exacerbated by the fact a population of 3,000,000 live in close proximity. The deadly power of Vesuvius was dramatically demonstrated in AD 79, when a monumental eruption wiped out the Roman cities of Herculaneum and Pompeii. Vesuvius has been showing sign of activity for several years before the great eruption, the most dramatic of which was a powerful and destructive earthquake 17 years previously. Earthquakes and volcanoes commonly occur in tandem, and this phenomenon would not have been lost on the Roman population. On August 24, in AD 79, Vesuvius erupted, spewing a column of ash and pumice high into the atmosphere around the volcano. The column rose more than 15 miles, and carried the cities of Pompeii and Herculaneum by strong easterly

Ash plumes and steam rose into the bright blue sky as the underground earthquake shook the land and rattled windows all across the eighteen mile town. As the jet circled the island, in view of lovely beaches and emerald water, looming over this lush paradise was the screaming volcano. Volcanos erupt when the pressure inside of them becomes so great that the magma surges up and forces its way out. An exploding volcano can rip apart a mountain in just seconds, when the eruption is over, a landscape is changed forever. The united states is home to more volcanos than any other country except Indonesia, and Japan. The majority of these volcanoes are in Alaska. Until recently, there was no way to predict when a volcano would blow, although volcanoes give off many warning signs before they erupt. Including smaller earthquakes beneath the volcano, slight inflation, or swelling. The rising magma eventually causes the solid rock to break, sending earthquake signals. Most volcanoes give warning signs beginning weeks or months before they blow (Lindop).