Tonga's record-breaking volcanic eruption surprises NIWA scientists following expedition - Newshub

"With an explosion that violent – the biggest ever recorded – you would expect that the whole volcano would have been obliterated, but it wasn't."

Mackay said it was the seafloor surrounding the volcano that saw a drastic change. "The seafloor showed some dramatic effects from the eruption. There is fine sandy mud and deep ash ripples as far a… [+617 chars]

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