![Image credit - Dr. Gary A. Glatzmaier - Los Alamos National Laboratory - U.S. Department of Energy. Image credit - Dr. Gary A. Glatzmaier - Los Alamos National Laboratory - U.S. Department of Energy.](/sites/default/files/hm/546px-Geodynamo_Between_Reversals.gif)
Sudden changes to the magnetic field are caused by moving blobs inside the Earth's core, scientists believe.
https://gizmodo.com/blobs-in-earths-core-could-be-causing-geomagnetic-jerks-1834243301
Sudden changes to the magnetic field are caused by moving blobs inside the Earth's core, scientists believe.