An unprecedentedly violent volcanic eruption that triggered a tsunami off the Pacific island nation of Tonga in 2022 unleashed the fastest underwater currents ever recorded, according to a study published on Thursday.
The eruption – the most powerful ever recorded with modern equipment – triggered a deadly tsunami and"avalanche-like flows" of material that damaged underwater telecommunications cables connecting Tonga with the rest of the world.
The volcano's eruption plume, up to 57 kilometers high, fell directly into the water and onto steep underwater slopes, explained Mike Clare of the NOC. Eruptions on land also belch hot and fast currents of lava, volcanic ash and gases known as pyroclastic flows.
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