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Reference Terms
from Wikipedia, the free encyclopedia

Earth's magnetic field

Earth's magnetic field (and the surface magnetic field) is approximately a magnetic dipole, with one pole near the geographic north pole and the other near the geographic south pole.

The locations of the magnetic poles are not static but wander as much as 15km every year.

The two poles wander independently of each other and are not at directly opposite positions on the globe.

Note:   The above text is excerpted from the Wikipedia article "Earth's magnetic field", which has been released under the GNU Free Documentation License.
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February 24, 2017

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updated 12:56 pm ET