From SpaceWeather.com:
....ELECTRICITY SURGES THROUGH THE SOIL OF NORWAY: Yesterday,
Jan. 6th, something unexpected happened in the soil of northern
Norway. "Electrical currents started flowing," reports Rob Stammes, who
monitors ground currents at the Polarlightcenter geophysical observatory
in Lofoten. This chart recording shows the sudden surge around 1930 UT:
"It seemed to be some kind of
shockwave," says Stammes. "My instruments detected a sudden, strong
variation in both ground currents and our local magnetic field. It
really was a surprise."
NASA's ACE spacecraft
detected something as well. About 15 minutes before the disturbance in Norway, the interplanetary magnetic field (
IMF)
near Earth abruptly swung around 180 degrees, and the solar wind
density jumped more than 5-fold. Earth may have crossed through a fold
in the
heliospheric current sheet--a
giant, wavy membrane of electrical current rippling through the solar
system. Such crossings can cause these kind of effects....
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