Mount St. Helens

The Mount St. Helens eruption in 1980 had significant social effects, including the displacement of thousands of people, destruction of homes and infrastructure, and impacts on local economies due to disrupted transportation and tourism. The disaster also led to changes in emergency response procedures and increased awareness of volcanic hazards in the region.

yes but only 5 people, but it left people homeless. Great Arnoldini was visiting hawaii when it was about to erupt and in his famous skydiving adventures died falling into the volcanoes mouth when about to erupt could this be the cause? We will always remember great Arnoldini.

During the 1980 eruption of Mount St. Helens in Washington state, nearby villages such as Spirit Lake and Mosquito Lake were destroyed by pyroclastic flows, ash fall, and debris avalanches. Many residents were evacuated before the eruption, but some individuals tragically lost their lives. The surrounding landscape was drastically altered, with forests leveled and rivers diverted. Today, the area has undergone regrowth and recovery efforts.

Mount St. Helens has a width of approximately 6 miles at its base.

Some of the negative effects are the obvious damages to houses, plants, wildlife, and even people, which are caused by the lava. Also, the gas produced can overcome the oxygen and kill people and animals that way. The positive effects include the

heat, which is an important source of energy. Also, the eruption brings nutrient and minerals to the surface, which is beneficial to plants. One last positive effect is the creation of land forms and igneous rocks, which are used to construct buildings

Mount St. Helens sits on the Cascadia Subduction Zone, which is a convergent plate boundary where the Juan de Fuca Plate is subducting beneath the North American Plate. This subduction zone is responsible for the volcanic activity in the region.

The eruption of Mount St. Helens on May 18, 1980, affected the surrounding environment, wildlife, and communities in Washington State. The eruption resulted in the loss of human lives, including loggers, scientists, and campers in the area. It also caused widespread destruction of forests, rivers, and infrastructure, leading to significant economic and environmental impacts.

The land around volcanoes are highly fertile due to the amount of minerals and nutrients that a volcano spews up which makes it a fairly good place for agriculture, although this tends to only happen in LEDC's where people are so poor they'll take the risks of being near a volcano. The land around volcanoes are highly fertile due to the amount of minerals and nutrients that a volcano spews up which makes it a fairly good place for agriculture, although this tends to only happen in LEDC's where people are so poor they'll take the risks of being near a volcano.

Yes. The 1980 eruption of Mount St. Helens started with a sideways explosion called a lateral blast, which was followed by a more normal vertical eruption column. While the lateral blast was the shortest phase of the eruption, it caused the most damage.

The major cities affected by the eruption of Mount St. Helens in 1980 were Spokane, Seattle, and Portland. The eruption caused significant ashfall, disrupted air travel, and impacted the local economies of these cities.

(1) Himalayas -- Convergent between continental-continental collision of Indo-Australian and Eurasian plates.

(2) Aleutian islands -- Convergent between oceanic-oceanic collision of Pacific plate beneath North American plate.

(3) Andes Mountains -- Convergent between oceanic-continental collision of Pacific plate beneath South American plate.

(4) San Andreas Fault (Zone) -- Transform boundary (sometimes called a conservative boundary) between Pacific and North American plates.

(5) Iceland -- Divergent boundary along the Mid-Atlantic Ridge arm of the Mid-Ocean Ridge, separating North America to the west and Eurasia to the east. *Also* a large hot spot, which is what brought Iceland to the surface, rather than remaining undersea.

(6) Japan -- Convergent boundary between Pacific plate beneath North American plate (yes, Japan is on the North American plate).

(7) Mount St. Helens -- Convergent boundary between Juan de Fuca beneath North Americna plate.

Convergent boundaries build mountains (technically divergent do too, but no one ever thinks about them -- but they're lots and lots of small volcanoes)

Continental-continental --> crust slams together like two buses, neither plate can subduct, rock squirts up and out, you get the Himalayas (Indo-Australian and Eurasia)

Oceanic-oceanic --> crust meets and the older, denser, cooler one subducts. It reaches a depth that it melts, the new magma rises to the surface, pops out as a volcanic lava flow. Thousands of flows later, you have dry volcanic islands poking out of the surface. Because this is happening along a plane, you get a whole chain - an volcanic island arc like the Aleutians (Pacific plate below North American plate)

Oceanic-continental --> crust meets and the oceanic will *always* subduct. Just like oceanic-oceanic, it melts and rises and pops out, but this time on a dry continental surface. Again, thousands of flows later, you have a volcano. Again, as it's on a plane, you get a whole mountain range.

Mount St. Helens is located in the state of Washington in the United States.

The lateral blast of Mt. St. Helens on May 18, 1980 was caused by a moderate earthquake that caused the north flank of the volcano to give way. This did cause the pressure that had been built to explosively release in a northern direction instead of the traditional vertical explosive eruption.

Mt St. Helens is currently 8,365 feet high and covers a large area of about 30 x 30 miles. The crater on top, created in 1980 is about a mile wide.

Mount St. Helens takes its English name from the British diplomat Lord St Helens, a friend of explorer George Vancouver who made a survey of the area in the late 18th century.

Mount St. Helens is located in Washington state because it forms part of the Cascade Range, a volcanic arc in the Pacific Northwest region of the United States. This volcanic arc is created by the subduction of the Juan de Fuca plate beneath the North American plate, leading to the formation of magma chambers and ultimately volcanic activity, such as the eruption of Mount St. Helens in 1980.

its not in a town or city its in a national forest

The eruption of Mount St. Helens on May 18, 1980, had a significant impact on humans, including causing 57 direct fatalities and extensive damage to infrastructure, forests, and wildlife. The ashfall from the eruption also affected air quality, agriculture, and transportation in the surrounding areas. Additionally, the eruption led to changes in land use policies and increased monitoring of volcanic activity to enhance public safety.

If Mount St. Helens were to erupt, it could release a significant amount of ash, gases, and lava, potentially affecting nearby communities and ecosystems. There could be ashfall, lahars (mudflows), pyroclastic flows, and explosive eruptions, posing a threat to human life, infrastructure, and air travel in the region. Emergency response plans would be activated to protect people and property.

The mapped location of Mt. St. Helens, at the north end of the Dryer Glacier about 2.1 miles southwest of the East Dome, is at

46 degrees 11 minutes north latitude

122 degrees 11 minutes west longitude

Cougar, Washington is about 100 miles by highway but Saint Helens is naturally 28 miles from the volcano. So really either would work!

violently

Mount St. Helens is an active volcano in Washington state that famously erupted in 1980, causing significant destruction. It is part of the Cascade Range and is monitored closely by scientists for any signs of potential eruption. The area surrounding the volcano is now a national monument and popular destination for outdoor enthusiasts.

Mount St. Helens is a stratovolcano, which is a type of volcano known for its steep profile and explosive eruptions. It is located in the Cascade Range in the state of Washington in the United States.