Movies of  the radial component of the geomagnetic field on the Earth's core-mantle boundary during a reverse-to-normal magnetic polarity transition, calculated using the MAG program. Red contours indicate outward magnetic flux, blue and black contours indicate inward magnetic flux. This animation represents approximately 10,000 years of simulated time. ([[File(cmbmv.mov)]] original file]) ([[File(mgmv500.mov) original h-res]]) ([[File(magmv3151.mov)]] original low-res])