The twin islands were created by a volcano. The volcano destroyed them on January 15.
One of the most powerful eruptions ever captured on satellite was located in the South Pacific. Scientists were amazed by the size and fury of the resulting plume. The eruption has had a disastrous effect on the local area, with a wave nearly 50 feet high hitting some of the populated islands.
Powerful shock or pressure waves were created by the historic eruption and were felt all over the globe. It's the same as a rock thrown in water.
Ryan Torn, chair and professor at the University of Albany Department of Atmospheric and Environmental Sciences, said to think of the ripples that you see when you throw a rock into a calm pond. "Immediately, you see circular ripples, which are waves from where the rock enters the pond."
The acoustic gravity waves traveled through the air at a speed of 760 mph when the volcano erupted. The blast's wave of energy knocked the air into each other. The animation shows the global event well.
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The atmosphere is a fluid. It's not as dense as a liquid, but gas particles react to temperature, pressure, and things flowing through in similar ways, explained Phil Blom, an expert in acoustics and geophysics research at Los Alamos National Laboratory.
There's not much that can be done to stop the waves. "It will circle the globe multiple times," said Blom. Brian McNoldy is an atmospheric scientist at the University of Miami. Waves traveling through the atmosphere are picked up by weather stations that record changes in the atmosphere's pressure, but are not visible to us. The waves are no longer in the air.
It will circle the globe multiple times.
The world-traveling waves are created by a profoundly energetic blast. The scientific investigation has just begun and volcanologists think that the eruption was caused by the pressure of the volcano's magma beneath the surface. Water is converted into steam. The University of Oregon's volcanologist, Josef Dufek, said that the eruption gave them outsized energy.
Like opening a soda can, there's a great pressure release. Volcanic ash is thrown high into the air. Dufek noted that the ash cloud may have reached over 30 miles.
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The pressure waves caused meteotsunamis in Europe. Meteotsunamis are driven by changes in air pressure, like from a storm, or a blast from a volcano, and are not as long waves of displaced water. A surge of water can be caused by the changes in air pressure. Sea levels went up in parts of Spain.
The entire globe was impacted by a geologic event in the South Pacific. The pressure waves began to be detected by weather stations in Europe.
"These facts are reminders that we all share the same atmosphere, all around the globe," the World Meteorological Organization said.
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