From space, auroras form rings of light around the north and south geomagnetic poles and are suspended above the Earth like halos, says Eather.
12.
The latitudes of the Virtual Geomagnetic Poles from those sites determined to be statistically significant are plotted against the stratigraphic level at which they were collected.
13.
Although generally Earth's field is approximately dipolar, with an axis that is nearly aligned with the rotational axis, occasionally the North and South geomagnetic poles trade places.
14.
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.
15.
The locations of geomagnetic poles are predicted by the International Geomagnetic Reference Field, a statistical fit to measurements of the Earth's field by satellites and in geomagnetic observatories.
16.
Like the North Magnetic Pole, the North Geomagnetic Pole attracts the north pole of a bar magnet and so is in a physical sense actually a magnetic " south " pole.
17.
Russia's Vostok station, up on the polar plateau at the geomagnetic pole, is completely cut off from the outside world from February to November by gales and drifting snow that closes the runways.
18.
The zone occurs where Earth's magnetic field lines converge upon the atmosphere as they loop around the planet from the southern geomagnetic pole to the northern one ( there's a southern auroral zone too ).
19.
Paleomagnetists have long relied on the " Geocentric axial dipole ( GAD ) hypothesis ", which states that, aside from during geomagnetic reversals, the time-averaged position of the geomagnetic poles has always coincided with the geographic poles.
20.
Similarly, the 23 degree tilt of the Earth s axis about which the geomagnetic pole rotates with a diurnal variation, changes the daily average angle that the geomagnetic field presents to the incident IMF throughout a year.
