Saturday, February 4, 2023

ESA reveals how the incredible eruption of the Hanga Tonga volcano was heard

One year after the entry of the Hanga Tonga-Hanga Ha’apai volcano rash Causing widespread destruction in the Pacific island nation of Tonga, spewing volcanic material up to 58km into the atmosphere and causing a nearly 15m tsunami to crash onto the coast, destroying villages, the European Space Agency (ESA) turned to finding out how sonic booms The biggest explosion of the 21st century is heard.

Due to the great interest generated by the extraordinary explosive eruption. Sound artist Jamie Pereira recently recreated it underwater volcanic eruption Using Rayleigh wind intensity signal provided by VRES platform.

using wind data obtained from one of its flyovers Ash cloud from the Hanga Tonga eruptionPereira used an audio sample of one of the shock waves, time-stretched it to a ghostly pitch, and mapped it to the transcribed harmonic values ​​of 90 Aeolus readings taken over approximately 15 minutes.

artistic intent behind Sonfication was to evoke the ethereal landscape of Hanga Tonga and other volcanoes.

According to its creator, the listener hears a reading every two seconds, in the piano’s harmonic range spanning six octaves, the highest of which can be heard around 01:18 when the reading marks the eruption’s dust column at its highest point. Show (more than 20.5 km).

Tonga volcano eruption, what was it like?

According to ESA, Tonga volcano has erupted sporadically since 2009. But activity began in late December 2021 when a series of eruptions forced bursts of volcanic gases out of the vent.

The rapid series of eruptions started on January 15, 2022 and generated atmospheric shock waves, sonic booms and tsunami waves who traveled all over the world. It also created a huge plume of water vapor that went into Earth’s stratosphere, enough to fill more than 58,000 Olympic-sized swimming pools.

Satellite data suggested that the volcanic ash column may have reached a height of 21 km to 30 km.

Nation World News Desk
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