The Danish and German researchers recreated the haunting sound of Earth's magnetic field flipping 41,000 years ago, amidst a significant weakening of its strength.
During the Laschamp event, Earth's magnetic field diminished to just five percent of its strength, permitting cosmic rays to penetrate the atmosphere and create a disturbing sound.
Researchers from the Technical University of Denmark and the German Research Center for Geosciences merged field recordings like wood creaking and rock falling to recreate the ancient event's eerie sound.
This recreation is part of a series of projects utilizing data from ESA's Swarm mission to sonically illustrate the dynamics of Earth's magnetic field.
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