And you heard the sound of a volcanic thunder?

Geophysics recorded the rumble of volcanic thunder, watching the series of violent eruptions on the island in the North Pacific in 2017.

The thunder was accompanied by lightning in the jets of ash that rose from the volcano Theologian in the Aleutian Islands. Rumble has registered the microphones on another island at a distance of 64 km.

The volcanic sound of thunder never recorded, because it is very difficult to separate it from explosions and rumbles that accompany volcanic eruptions. In audio sounds of thunder are heard as claps and clicks against the low rumble of the eruption.

"The people who were present during the eruption, just seen and heard this before, but the first time we accurately recorded and identified the sound," says Matt Haney, a seismologist from the Volcanic Observatory Alaska in anchorage (United States).

The volcano Theologian exploded more than 60 times from December 2016 to August 2017, giving researchers an ideal opportunity to record the explosions on the neighboring island Umnak. In March and June, the microphones recorded clear sounds of a volcanic thunder that arrived on Umnak three minutes later after a global network of sensors recorded the lightning flashes in the ash stream of the divine.

"If people watched the eruption in person, they would have heard the thunder," says Haney. The thunder follows the lightning that is created in the jet, when tiny particles of ash and ice collide and become electrically charged in the process.

Translated by «Yandex.Translator»