Mount St. Helens

Some external forces at work on Mount St. Helens include weather patterns, such as rain and snowfall, which can contribute to erosion and mass wasting. Additionally, tectonic forces, like subduction along the Cascadia subduction zone, can also impact the volcanic activity and potential for future eruptions. Finally, human activities, such as tourism and infrastructure development, can influence the environmental conditions and management of the area.

Pre-eruption the summit was on the western rim of the circular crater. The lowest point was on the eastern rim aka the 'false summit'.

Post eruption the northern side of the mountain blew out leaving the southern rim the new new 'summit'.

The legend of Mt. Apo is frequently called the Tale of Two Eels. Legend has it that the pets of the god Manama, two eels named Aeele and Eele, went to find the Ocean. Aeele was smarter than Eele, and was able to find the Ocean, while Eele died, still searching. When Manama discovered Eele, he turned him into Mt. Apo, as a warning to daydreamers.

St. Helens released an amount of energy equivalent to 27,000 Hiroshima-sized nuclear weapons and ejected more than 1 cubic mile (4 km³) of material. A quarter of that volume was fresh lava in the form of ash, pumice, and volcanic bombs while the rest was fragmented, older rock. The removal of the north side of the mountain (13% of the cone's volume) reduced St. Helens' height by about 1,313 feet (400 m) and left a crater 1 to 2 miles (2 to 3 km) wide and 2,100 feet (640 m) deep with its north end open in a huge breach. More than 4 billion board feet (14.6 km³) of timber was damaged or destroyed, mainly by the lateral blast. Downwind of the volcano, in areas of thick ash accumulation, many agricultural crops, such as wheat, apples, potatoes, and alfalfa, were destroyed. As many as 1,500 elk and 5,000 deer were killed, and an estimated 12 million Chinook and Coho salmon fingerlings died when their hatcheries were destroyed. Another estimated 40,000 young salmon were lost when they swam through turbine blades of hydroelectric generators when reservoir levels were lowered along the Lewis River to accommodate possible mudflows and flood waters. The ash fall created some temporary but major problems with transportation, sewage disposal, and water treatment systems. Visibility was greatly decreased during the ash fall, closing many highways and roads. Over a thousand commercial flights were cancelled following airport closures. Fine-grained, gritty ash caused substantial problems for internal-combustion engines and other mechanical and electrical equipment. The ash contaminated oil systems and clogged air filters, and scratched moving surfaces. Fine ash caused short circuits in electrical transformers, which in turn caused power blackouts. There were also indirect and intangible costs of the eruption. Unemployment in the immediate region of Mount St. Helens rose tenfold in the weeks immediately following the eruption

The eruption of Mount St. Helens in 1980 destroyed and scorched vegetation within a 230 square mile area around the volcano. The blast removed trees and plants, leaving behind a barren landscape of scorched earth and ash. Over time, the area has slowly been recolonized by plants and trees as part of the natural ecological succession process.

The eruption of Mount St. Helens resulted in the formation of a key bed because the volcanic ash and debris were deposited over a wide area in a relatively short period of time. This layer of ash can be easily identified and dated, making it a useful marker bed for correlating rock layers in different locations.

Mount St. Helens is an active stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United States. It is 96 miles south of Seattle and 50 miles northeast of Portland, Oregon. The eruption was the only significant one to occur in the contiguous 48 U.S. states since the 1915 eruption of California's Lassen Peak. That eruption disrupted the lives of thousands and changed more than 200 square miles of rich forest into a grey, lifeless landscape. The eruption was triggered by a 5.1 earthquake centered beneath the mountain.

When Mount St. Helens erupted on May 18, 1980, it caused the largest debris avalanche in recorded history, resulting in the loss of 57 lives. The eruption also released a powerful lateral blast that devastated over 230 square miles of forest and blew down nearly 4 billion board feet of timber. Additionally, it caused ashfall in 11 states and had significant impacts on air travel and the environment.

May 18, 1980. I was a downwinder, and saw about 2" of fine ash fall at my place.

No, Mount St. Helens had a Plinian eruption in 1980, which is characterized by a violent explosion of gas and ash. Hawaiian eruptions, on the other hand, are characterized by the steady flow of lava.

Mount St. Helens and Mount Adams are known as brother and sister because of their close proximity and similar volcanic origin in the Cascade Range. Local Native American legends also refer to the two mountains as siblings, with Mount Adams symbolizing a brother and Mount St. Helens a sister.

The eruption on May 19th 2008 has been classified as uncertain and no fatalities have been reported.

Mount St. Helens is classified as an active stratovolcano in the Cascade Range in Washington state, USA. It is part of the Pacific Ring of Fire due to its location along the boundary of the Juan de Fuca Plate and the North American Plate.

Before the eruption of Mount St. Helens in 1980, there were several smaller explosive eruptions and earthquakes that signaled the volcano's increased activity. The eruption on May 18th, 1980, was preceded by a series of steam explosions, a bulge forming on the north flank, and increased seismic activity. Scientists closely monitored the situation and warned of the impending eruption, leading to the evacuation of the area around the volcano.

The volcanic eruptions of Mount St. Helens created a variety of landforms, including a horseshoe-shaped crater, a lava dome, pyroclastic flows, lahars (mudflows), and new lava fields. The blasts and flows reshaped the landscape, producing a complex mix of valleys, canyons, and ridges in the surrounding area.

Mount St. Helens is an example of a stratovolcano, also known as a composite volcano. These types of volcanoes are characterized by their steep slopes and explosive eruptions due to the high viscosity of their magma.

Mount St. Helens is predominantly composed of andesite, which is an intermediate volcanic rock that forms from the partial melting of the Earth's crust. This type of rock gives Mount St. Helens its characteristic gray color and is related to the volcanic activity in the area.

The first eruption of Mount St. Helens on May 18, 1980, lasted for about 9 hours. It began with a massive explosion that removed the top of the mountain, triggering a devastating lateral blast and pyroclastic flows.

People continued living near Mount St. Helens due to economic reasons (jobs, livelihoods), lack of immediate danger perception, attachment to their homes, and optimism that the volcano wouldn't erupt again. Additionally, some people may not have had the means or resources to relocate.

Mount St. Helens is known for its explosive eruptions. In 1980, it erupted violently and produced a massive explosive eruption that caused significant devastation to the surrounding area. Subsequent eruptions have also been explosive in nature.

The scientists knew that Mount Saint Helens was going to erupt because of the seismic activity around it. There has been frequent earthquakes under the mountain before it was going erupt. The earthquakes were because of the lava building up inside of the volcano and it started to inflate like a balloon and in May 18, 1980 that balloon exploded, by Nii Lomotey Engmann.Hello Mr. Alan G. Cummings, Reno Hendrew, The Langleys(Carl Heinze and Bronwyn) and Ale Chauca.

Yes, several countries, including Canada and Japan, offered aid to Washington after the 1980 Mount St. Helens eruption. The assistance included financial support, expertise, and resources to help with recovery and cleanup efforts. This assistance was welcomed by the state and federal agencies involved in the response to the disaster.

Many people felt shock, sadness, and fear after the eruption of Mount St. Helens. The loss of life, destruction of homes, and impact on the environment left a lasting emotional toll on those affected. Some also felt awe at the power of nature.

yes it was nicknamed "loo-wit" (meaning lady of fire) by the cowlitz people