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What were the Primary and Secondary effects of the Mount Saint helens eruption?
Wiki User
∙ 12y ago
Effects on the landscape: 400 meters of the mountain was blown off and a 500 meter horse shoe crater was made. Approximately 7000 animals died within 25km north side of the volcano. Every tree within 30km was flattenedThe melted ice created mudflows down the mountains flowing into streams killing about 12 million salmon. The eruption destroyed 250 homes, 47 bridges, 15 miles of railways and 185 miles of highway
Effects on people:57 people died whilst most were evacuated
Ash clogged up car engines and farm machinery. The cost of ash damage totalled £100 million.
15cm of ash fell cancelling flights and causing traffic chaos Telephone lines and electricity supplies were cut off
Tourists no long visited the area causing a reduction in the local economy.
Wiki User
∙ 12y ago
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What type of eruption was the 1980 eruption of mt st Helens?
The Mount Helen's 1980 eruption was a major volcanic eruption.
On what day and at what time did the 1980 eruption happen?
on the mnt st helens eruption in 1980 it was may 18th at 8:30 am
When did mount helens erupt?
It is said to have erupted many times, but the most famous eruption was on May 18, 1980, which took out most of the forest around it.
What caused the eruption of Mt St Helen?
volcano eruptions are triggered by seismic activity, meaning earthquakes and such. Mt St Helens is along the ring of fire, which is full of seismic activity.
How does an earthquake affect plants and animals?
Earthquakes can change the physical landscape near the fault lines. Earthquakes can also have secondary effects such as an earthquake causing a massive landslide on Mt. St. Helens, releasing the pressure on it's highly pressured magma chamber and exploding outwards (AKA - 1980 eruption). This earthquake caused eruption spread massive amounts of ash and sulfur into the atmosphere.
Was there any climate effects from mount st Helens' eruption?
yes
What was two effects on mount St Helens after the eruption?
a lot of ash and fires
What are the effects of the mt st helens 1980 eruption?
Houses and properties were destroyed in area.
What effects did the eruption of mt saint helens volcanoe have?
It killed animals and stuff. And people. Look at wikipedia.
What was mt st Helens most famous eruption?
The 1980 eruption of Mount St. Helens.
How did people prepare for the eruption of mount saint helens?
how did people prepare for the mt. st. helens eruption
What was the latest eruption of Mount St. Helens?
The latest eruption was in 2008.
What were the social effects of the Mount St Helens volcanic eruption?
57 people diedmore than 250 homes destroyed2000 people evacuated
How big was the last eruption of Mount Fuji compared to the eruption of Mount Saint Helens?
about as 50% chance that mount saint helens' eruption is way bigger than mount fuji
What was the physical destruction of Mount St Helens eruption?
Just that. A volcanic eruption
Where was the Mount St. Helens eruption?
in wahington the state
What type of eruption was the 1980 eruption of mt st Helens?
The Mount Helen's 1980 eruption was a major volcanic eruption.
