Earth's Magnetic Field
Name: Bob W.
What is the strenght of the earth's magnetic field,
either in gauss or tesla?
The earth's magnetic field strength is about 0.3 gauss. Keep in mind that
it is not well understood what the origin of that magnetic field is. Most of
it comes from postulated rotation of a conducting molten core, but some
comes from movement of the ionosphere. Also the location of the magnetic
pole has drifted significantly since its location has been tracked from the
1800's and that it wobbles because it does not coincide with the geological
rotational axis. And even the geological axis is not fixed but changes due
to a number of effects. It is all quite interesting, but complicated.
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Update: June 2012