Geomagnetic Reversal Trigger Mechanism Study Finds Dipole Field Bi-Stability in Dynamo Simulations
A team at Japan's National Institute for Fusion Science (NIFS) and the Graduate University for Advanced Studies, SOKENDAI, has published new magnetohydrodynamic simulation results demonstrating that a dipole magnetic field in a spherical-shell dynamo - the same geometry as the Earth's outer core - exists as two stable states of opposite polarity, a result the authors say provides a major clue to