Magnetic field reversal

Magnetic field reversal may refer to:


 * Geomagnetic reversal
 * Brunhes–Matuyama reversal, approximately 780,000 years ago
 * Gauss-Matuyama reversal, approximately 2.588 million years ago
 * Jaramillo reversal, approximately one million years ago
 * Laschamp event, a short reversal that occurred 41,000 years ago
 * Reversal of the solar magnetic field
 * Magnetization reversal, a process leading to a 180° reorientation of the magnetization vector with respect to its initial direction
 * Polarity reversal (seismology), a local amplitude seismic anomaly