Pulsating Ground currents
Taken by Rob Stammes on August 30, 2017 @
Polarlightcenter Lofoten Norway.
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Details:
This morning sinusoidal pulsations on my ground current instrument.Induced by magnetic pulsations and very good visible when our Earth magnetic field is quiet.It is a rare fenomenon and a few times a year visible, normally around the equinoxes and in the morning hours.
Photographer's website:
http://polarlightcenter.com
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