Largest volcano eruption in 140 years sent exceptional pressure waves around Earth

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Tonga\u0027s January eruption created atmospheric reactions \u0027unprecedented in the modern geophysical record\u0027

The Hunga eruption seen from the GOES-17 satellite of the National Oceanic and Atmospheric Administration.Nine hours after the explosion, booms were heard as far off as Alaska — 10,000 kilometres away — compelling some to believe there was a link to the eruption. But the scientists believe those booms could not have originated in Hunga.

“We have more than a century of advances in instrumentation technology and global sensor density,” he said. “So the 2022 Hunga event provided an unparalleled global dataset for an explosion event of this size.”“The atmospheric waves were recorded globally across a wide frequency band, and by studying this remarkable dataset we will better understand acoustic and atmospheric wave generation, propagation and recording,” Fee said.

“This has implications for monitoring nuclear explosions, volcanoes, earthquakes and a variety of other phenomena,” he continued. “Our hope is that we will be better able to monitor volcanic eruptions and tsunamis by understanding the atmospheric waves from this eruption.”

 

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