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

See also

• Geomagnetic excursion
• Polarity chron
• Pole shift hypothesis
• True polar wander