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stormwyrm writes:

The BBC reports that at least 62 people have been killed and 584 injured after a tsunami hit the coast of Indonesia's Sunda Strait after an eruption of the volcano Krakatoa:

The country's disaster management agency says hundreds of buildings were damaged by Saturday's tsunami.

It says the possible cause of the tsunami was undersea landslides after the Krakatoa volcano erupted.

The strait, between the islands of Java and Sumatra, connects the Java Sea to the Indian Ocean.

[...] Emergency officials are investigating whether the tsunami was caused by Anak Krakatoa, a volcanic island in the Sunda Strait.

Volcanologist Jess Phoenix told the BBC that when volcanoes erupt, hot magma pushes underground and can displace and break through colder rock. This can trigger a landslide.

But because part of Krakatoa is underwater, she said "instead of just causing a landslide, you get an undersea landslide which pushes water as it moves." This can then cause a tsunami.

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