Listen to the terrifying rumble of Earth’s magnetic field being assaulted by a solar storm

Earth’s magnetic field sounds ‘creepy’ in data conversion

If you’re seeking something unsettling from space this October, an audio track of converted data released by the European Space Agency (ESA) provides a disturbing sonic representation of the Earth’s magnetic field under attack.

Earth’s magnetic field is generated by superheated, swirling liquid iron in the planet’s core and, crucially, keeps life on the surface safe from a barrage of cosmic radiation and charged particles. We can sometimes see these interactions as green-blue aurora near the poles, but it’s not usually something that can be heard.

However, a team from the Technical University of Denmark has made the invisible audible by gathering data from a trio of ESA satellites launched in 2013 to measure the Earth’s magnetic signals and converting it to sound. The result is a somewhat unnerving representation of a rumbling magnetic field and a clash with particles from a solar flare.

An artist’s depiction of Earth’s magnetic field protecting the planet. (Image credit: ESA/ATG medialab)

The audio is available online, but it was designed to be experienced via a sound system consisting of over 30 loudspeakers dug into the ground at the Solbjerg Square in Copenhagen, Denmark.

“The team used data from ESA’s Swarm satellites, as well as other sources, and used these magnetic signals to manipulate and control a sonic representation of the core field,” musician and project supporter Klaus Nielsen, said in a statement.

“The rumbling of Earth’s magnetic field is accompanied by a representation of a geomagnetic storm that resulted from a solar flare on Nov. 3, 2011, and indeed it sounds pretty scary,” Nielsen said.

The magnetic signals used include those passing through mantle, crust and oceans, as well as from the ionosphere and magnetosphere, so sounds suggestive of an earthquake are somewhat fitting.

Visitors to the square can listen to the data sonification project until Oct. 30.

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