How scientists searched for the elusive sounds of the northern lights.
The noises have been a scientific mystery for over a hundred years — but a lone researcher now seems to have finally figured them out.
detailing the scientific search for the sounds of the aurora borealis — the northern lights. The almost phantasmagorical noises have been a mystery to scientists for over a hundred years. But now it seems that a lone researcher has figured out how auroras really do make sounds. Auroral sounds were investigated by scientific expeditions during the first International Polar Year in 1882-83. Little was then known about the northern lights, and figuring out what caused them was a big deal, Amery said. Despite efforts by several scientists, their research into the noises auroras made was inconclusive.
— the culmination of years of monitoring auroras from his home village of Fiskars. Then, in 2016, he announced the mechanism that makes the sounds — an inversion layer of cold air in the atmosphere that can form below an aurora and a short distance above the ground in calm weather. Meteorological reports showed such an inversion layer had formed above Fiskars in 2013, during a vivid aurora when Laine recorded hundreds of its sounds.
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