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Questions tagged [reversals]

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7 votes
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Is there evidence of multiple poles (higher order than dipole) in earth's magnetic field?

There is this slightly uncombed simulation model of a geomagnetic field reversal, showing multiple poles, a quadrupole or even higher order magnetic field. Earth's magnetic field is mostly described ...
3 votes
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Strength of Magnetic Field at Mid Point of a Reversal

As the duration of a magnetic reversal can be up to 12,000 years, could there come a time mid-way in the transition when Earth's magnetic field is as negligible as that of Mars or Venus? Magnetic ...