The process by which the Earth's magnetic north pole and its magnetic south pole reverse their positions over time.
The change of the Earth's magnetic polarity; when a reversal occurs, the field flips from normal to reversed polarity, or vice versa.
A change in the polarity of Earth's magnetic field in which the north magnetic pole becomes the south magnetic pole and vice versa. Also known as geomagnetic reversal or polarity reversal. Earth's magnetic field has reversed many times in the past and the time intervals between these changes are known as polarity epochs.