Unto Leine, a professor at Aalto University in Finland, published a paper back in 2016 in which he linked
The new recordings were made at night not far fromthe village of Fiskars. Even though the aurora was not visible, Line's recording recorded hundreds of sounds that could be associated with the aurora. The analysis showed a high correlation of sounds with measurements of geomagnetic activity. Leine says all of the top 60 candidate sounds were associated with changes in the geomagnetic field.
“Using geomagnetic data that has been measured independently, I can predict when aurora sounds will appear in my recordings with 90% accuracy,” says Lane.
The researcher notes that the most surprising fact was that the sounds of the northern lights are heard even when the power of the geomagnetic flash is not enough to create a visible aurora.
“It was the biggest surprise!The sounds are much more common than anyone thought, but when people hear them without the visible northern lights, they think it's just ice crackling or maybe a dog or some other animal," adds the scientist.
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