Scientists have confirmed for the first time that radical changes of one volcano in southern Japan was the direct result of an erupting volcano 22 kilometers (13.7 miles) away. The observations from the two volcanos — Aira caldera and Kirishima — show that the two were connected through a common subterranean magma source in the months leading up to the 2011 eruption of Kirishima.
Deep subterranean connection between two Japan volcanoes
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