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When the magma gets close to the surface, the gases dissolved in it start to come out, forming gases which help the magma rise further and erupt. If there is a lot of gas in the magma, it may explode as the gases expand. There may also be triggers like a landslide that uncaps the magma reservoir (like at Mt. St. Helens in 1980) or an interaction with groundwater that causes an explosion.
Breanne Mohr
Wiki User
∙ 14y agoBefore a volcano erupts there will be a series of small earthquakes, due to the pressure of the magma building underneath, and as the magma draws closer to the surface the volcano will release gases.
Wiki User
∙ 12y ago80000 jewish infants were dumped into the bottom of the volcano before the eruption to insure a powerful blast
a horrible act of death, but they were jews so who cares really
anyways, you have a beatuiful soul
Wiki User
∙ 11y agoThe magma flows down and the fireball goes up.
Wiki User
∙ 9y agoBefore a volcano erupts the magma and gases that is underground begin to rise to the mouth of the volcano. There are usually earthquakes that occur before a volcano erupts as well.
Wiki User
∙ 11y agomagma crawls underground
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How did Mt Kilauea eruption affect the area?
The 1790 eruption of Kilauea is considered the most violent in the recent record of eruption of Kilauea. The specific changes of the landscape are not specifically known as there are no artist interpretations or photographs from before the eruption. All that is known about the eruption comes from dating of rocks to the eruption as well as legends from the native Hawaiian people. It is speculated that the eruption could have made the summit caldera up to 1,500 Ft. deep. Also most of the large boulders along the rim of crater drive as well as at the summit are also ejecta from that eruption.
How does magma composition and the resulting eruption affect the form of a volcano?
If the composition of the magma is high in silica, the eruption will be explosive. The Eruption of Mt. St. Helens was an explosive eruption. If the composition of the magma is low in silica, it will produce a quiet eruption. The eruption(s) of Mt. Kilauea are quiet eruptions.
Can a eruption from a volcano be detected before it happens?
To a limited degree, yes. Scientists can look for signs of pressure building and magma moving underground.
When the first time volcano kilauea erupted?
The first recorded eruption occurred in 1820, but an earlier one is also believed to have happened around 1790 when an eruption killed several native soldiers and their families. The oldest rock to be found is about 23,000 years old.
How can scientists measure the ground around a volcano before an eruption?
sensors and thermal images
What happens before an volcano eruption?
The are a smalls earthquake..
What happens before a volcanic eruption?
magma falls from underground to form an opening in the volcano
How did Mt Kilauea eruption affect the area?
The 1790 eruption of Kilauea is considered the most violent in the recent record of eruption of Kilauea. The specific changes of the landscape are not specifically known as there are no artist interpretations or photographs from before the eruption. All that is known about the eruption comes from dating of rocks to the eruption as well as legends from the native Hawaiian people. It is speculated that the eruption could have made the summit caldera up to 1,500 Ft. deep. Also most of the large boulders along the rim of crater drive as well as at the summit are also ejecta from that eruption.
Where was the first eruption of the volcano?
The first eruption was about 3.825,this was before human was alive!!
How does magma composition and the resulting eruption affect the form of a volcano?
If the composition of the magma is high in silica, the eruption will be explosive. The Eruption of Mt. St. Helens was an explosive eruption. If the composition of the magma is low in silica, it will produce a quiet eruption. The eruption(s) of Mt. Kilauea are quiet eruptions.
Can a eruption from a volcano be detected before it happens?
To a limited degree, yes. Scientists can look for signs of pressure building and magma moving underground.
When the first time volcano kilauea erupted?
The first recorded eruption occurred in 1820, but an earlier one is also believed to have happened around 1790 when an eruption killed several native soldiers and their families. The oldest rock to be found is about 23,000 years old.
What was the cause of St Helens Volcano's eruption?
The cause of St Helens Volcano Eruption in the year 1980 was a 5.1 magnitude earthquake. The volcano didnt erupt for 120 years before this eruption .. so all the magma in the magma chamber had alt of pressure and was pushed out. the volcano was in a position where plates move.
Where should i go before an volcanic eruption?
Preferably, to a safe distance from the volcano.
What was the worst volcano before mt Pinatubo?
The worst volcano before Mt.Pinatubo was in 1815. It was the worst eruption ever recorded. It killed 90,000 people.
How can scientists measure the ground around a volcano before an eruption?
sensors and thermal images
In The Dog of Pompeii what does tito feel hear and smell before and after the volcano eruption?
He smelled smoke
