Tuesday, February 7, 2023

Tonga’s brutal volcanic eruption was ‘heard’ from space

ESA has published sonification of Biggest explosion of 21st century One of the Hanga volcano Tonga–Hunga Haapai now one year ago– made with wind data from its Aeolus space mission.

This explosion on January 15, 2022 caused widespread destruction in the country Pacific Islands of Tonga. It ejected volcanic material up to 58 km into the atmosphere, bringing A tsunami of about 15 meters that crashed against the coast destroyed towns and created a sonic boom Who has circled the world twice.

Even a year later, there is still interest in the extraordinary explosive eruption. sound artist Jamie Pereira Recreated the acoustics of an underwater volcanic eruption using Rayleigh signal intensity data provided by the platform Aeolus Virtual Research Environment (VRE).

It is the latest extension of the VirES service for Aeolus, offering more direct and in-depth data exploitation of Aeolus satellite missions. VRE is a cloud service that provides web based development environment in the form of desktop workspace. JupiterLab.

Using wind data obtained from a satellite flyover of the ash cloud from the Hanga Tonga eruption, Jamie Pereira used an audio sample of one of Shock Wavestime stretched it to a ghostly pitch and assigned it the written harmonic values ​​of 90 aeolus readings 15 minutes.

The listener hears a reading every two seconds, in a harmonic range spanning six piano octaves, the highest of which can be heard around minute 01.18 when the readings show column of dust from the eruption at its highest point (over 20.5 km). The artistic intent behind the sonification was to evoke the otherworldly landscape of Hungarian Tonga and other volcanoes, reports ESA in a statement.

Nation World News Desk
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