McClean, S. 2007. Geomagnetism frequently asked questions. Boulder, Colorado USA: National Geophysical Data Center (NGDC). Accessed 24 January 2007.
Background: Labels the location of the South Geomagnetic Pole, which in 2005 was computed to be 79.74°S, 108.22°E by the World Magnetic Model (WMM). The Earth's geomagnetic poles are the points of intersection of the Earth's surface with the axis of a simple magnetic dipole that best approximates the Earth's magnetic field. If the Earth's magnetic field were a perfect dipole, then the field lines would be vertical at the geomagnetic poles and they would coincide with the magnetic poles. In reality, however, the magnetic and geomagnetic poles lie some distance apart. Both migrate over time.