The powerful Jan. 15 underwater eruption of Tonga's Hunga Tonga-Hunga Ha'apai volcano in the South Pacific produced a plume that soared higher into Earth's atmosphere than any other on record - about 35 miles (57 km) - as it extended more than halfway to space, researchers said on Thursday. The white-grayish plume unleashed by the eruption in the Polynesian archipelago became the first one documented to have penetrated a frigid layer of the atmosphere called the mesosphere, according to scientists who employed a novel technique using multiple satellite images to measure its height. The plume was composed primarily of water with some ash and sulfur dioxide mixed in, said atmospheric scientist Simon Proud, lead author of the research published in the journal Science. Eruptions fro...
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An underwater volcano off Tonga erupted on Saturday, triggering a tsunami warning for several South Pacific island nations, with footage on social media showing waves crashing into homes. Tsunami waves were observed in Tonga's capital and the capital of American Samoa, a U.S.-based tsunami monitor said. The eruption of an underwater volcano off Tonga, which triggered a tsunami warning for several South Pacific island nations, is seen in an image from the NOAA GOES-West satellite taken at 05:10 GMT January 15, 2022. CIRA/NOAA/Handout via REUTERS The eruption at 0410 GMT of the Hunga Tonga-Hunga Ha'apai underwater volcano, located about 65 km (40 miles) north of Nuku'alofa, caused a 1.2-metre (4-ft) tsunami, Australia's Bureau of Meteorology said. The agency said it continued to...
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