Earth’s magnetic field fluctuations explained by new data - Research by Vincent J. Hare, John A. Tarduno, Thomas Huffman et.al (Uni of Rochester, 2018)
NASA's simulation of geomagnetic reversal
Weakening magnetic field is a recurrent anomaly. The new data provides more evidence that a region in southern Africa may play a unique role in magnetic pole reversals.
Related: Mysterious Anomaly Under Africa Is Weakening Earth's Magnetic Field (2018)