A giant volcano that has been sleeping for 800 years “seems to be awakening”
- Activity was discovered under a giant volcano that has been sleeping for at least 800 years.
- There have been a series of earthquakes recently in Mount Edgecom, Alaska, USA.
- However, scientists say no need to worry, because the current technology is used frequently and effectively.
discovered activity under a giant volcano that had been sleeping for at least 800 years. A series of earthquakes in Mount Edgecom in Alaska, USA, has convinced scientists that the giant volcano may wake up again.
Alaska Volcano Observatory used satellite images and mathematical models to study it and found that recent activity was caused by the push of moving magma into the depths of the Earth's surface. After 800 years of no earthquake activity, the Edgecombe has been declared dormant. However, this new study suggests that more volcanic activity may soon be.
volcanologist David Pyre of Oxford told Newsweek : " When the magma moves, it either moves forcibly along the cracks or forms an expanding molten pool deep into the depths, both of which can trigger small earthquakes. Seismometers can detect very small vibrations and earthquakes—much smaller than humans perceive. If we place a series of seismometers around the volcano, we can use seismic signals to locate the triggering position of the earthquake. When the magma is pushed to the surface, it causes the earth above it to expand like a balloon."
However, scientists say no need to worry, because current technology is used frequently and effectively. Any changes will be discovered in time to ensure safety.
" satellite radar instruments are very important tools for monitoring volcanoes. They can measure very slight changes in the shape of the Earth's surface," Pyre said.
The United States has more volcanoes than any other country in the world, with an impressive 161 potential active volcanoes . Although Mount Edgecomb is said to have been active 800 years ago, geological evidence shows that the last major eruption was about 4500 years ago, putting it in " dormant state".
" Sleeping" is often used to describe volcanoes that have not erupted for decades or centuries and may seem completely quiet. But that means dormant volcano may erupt again," Pyer said. Recent increase in volcanic activity does not mean that volcanoes will erupt soon.
" " Detecting magma motion in the depths usually indicates that volcanoes are active or may be active, but this is not necessarily a sign of volcanic eruption," Pyer said.
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" In most cases, the interference will subside in a few weeks or months without any outbreaks. ”
Luohua News Agency
