That’s happening because of a tug-of-war between two unusually strong magnetic patches in the outer core, says Phil Livermore, director of the Institute of Geophysics and Tectonics at the University of Leeds. One patch is under Canada. The other is beneath Siberia. The magnetic North Pole has historically been in Canada because our country has won the molten push-pull contest. But now?
“Something’s changed, and now Siberia is winning,” Livermore says, explaining that the patch under Canada is being thinned out like a smear, elongated and weakened by a separate, fierce jet of magnetism in the core.