From a billion-tonne magma hammer to the ejection of water to space, January's eruption still amazes.
Scientists have gathered here in Chicago at the American Geophysical Union Fall Meeting to compare the latest results of their investigations into what happened.
Ash from Hunga-Tonga was measured by weather satellites to have travelled 57km above the Earth's surface, the highest ever recorded volcanic plume. But new data presented at the AGU meeting indicated the disturbance went higher still - all the way to space. Dr Paxton can tell from the light signature that the absorber was water vapour, and he can also calculate the mass of water sent into space: somewhere between 20,000 to 200,000 tonnes.The "hole" in the UV data is explained by the presence of water above 100km
Belgique Dernières Nouvelles, Belgique Actualités
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