The volcanic explosion wasn't nuclear, but every nuclear-monitoring station around planet Earth heard the low-frequency boom.
This satellite image taken by Himawari-8, a Japanese weather satellite, and released by the agency, shows an undersea volcano eruption at the Pacific nation of Tonga Saturday, Jan. 15, 2022. An undersea volcano erupted in spectacular fashion near the Pacific nation of Tonga on Saturday, sending large waves crashing across the shore and people rushing to higher ground.
NPR quoted Le Bras as saying, “Every single station picked it up. It’s the biggest thing that we’ve ever seen.” Citing CTBTO rules that prohibit estimating the size of nuclear detonations, LeBras declined to predict the size of Tonga’s volcanic eruption. But NPR reported that Margaret Campbell-Brown, a physicist at the University of Western Ontario in Canada who uses infrasound to study meteors as they enter the atmosphere, estimated it was “at least as large as the 50-megaton Soviet test in 1961.”
However, Jim Garvin, the chief scientist at NASA’s Goddard Space Flight Center in Greenbelt, Md., is more cautious and says it will take time to get a true estimate of the eruption’s size.
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