A Russian satellite captured the scale of the devastation from space, showing an island completely obliterated
An image posted online by Russian space agency Roscosmos has revealed the devastation caused by the eruption of the Hunga Tonga-Hunga Ha?apai volcano last week, comparing the border of the two islands before and after the disaster.
A satelite view shows the remains of Hunga Tonga and Hunga Ha?apai following a volcanic eruption Roscosmos
Located 65km (40 miles) south of Tonga's main island of Tongatapu, Hunga Tonga and Hunga Ha?apai were two separate islands connected by land that formed when a powerful submarine volcano erupted in 2015. However, following last week's explosive eruption, Roscosmos' imagery shows only a fraction of both islands remains, with significant chunks of both isles, plus the volcanic land in between, wiped out.
NASA said the eruption, which devastated Tonga and sent tsunami waves as far as California, was "hundreds of times" more powerful than the atomic bomb that flattened Hiroshima in 1945.
"This is a preliminary estimate, but we think the amount of energy released by the eruption was equivalent to somewhere between 4 to 18 megatons of TNT," the chief scientist at NASA's Goddard Space Flight Center, Jim Garvin, said in a post on the agency's website.
Such an explosion is "hundreds of times the equivalent mechanical energy of the Hiroshima nuclear explosion," NASA stated.