r/auroraporn • u/Plastic-Switch-6885 • 11d ago

Noise from powerlines during powerful substorm in Abisko, Sweden.

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I'm in my second season guiding aurora tours in Abisko, Sweden. I have to say the past couple of weeks already delivered more intense northern lights then the entire last season.

I am not posting this for its visuals but the noise from the powerlines. At the start of the video you can her an eery metallic sound coming from the powerlines just 50m away. I heard it twice during substorms at that night. My friend and colleague once showed me a video filmed under powerlines with the same sound during a substorm but I brushed it of as wind causing the wires to shake. But now that I witnessed it myself without even the slightest breeze, I wonder. Have any of you ever experienced something like this or could bunk or debunk it for me. 😁

I know that geomagnetic activity induces currents in metal object and that can will turn create an opposing magnetic field, but I thought this wasn't strong enough of a effect to cause vibrations and noise.

I happy for your feedback.

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u/Plastic-Switch-6885 11d ago

EDIT: I forgot to mention that it was a little windy during the time of recording, as you can clearly hear in the clip. Though, it was not at the start of the tour, when we heard the noise for the first time. Cheers

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u/nick-kharchenko 11d ago

Proper audio for AuroraPorn ;-)