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

It's common for dynamo models to predict a large reduction in the dipole field during a reversal. Proving it in the paleomagnetic record is another matter entirely. To characterize the geometry of the ...
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1 vote

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

The simple answer is YES. The Earth's magnetic field is generated by a self-exciting dynamo in the fluid outer core. The interaction between electric currents and liquid motion sustain this field ...
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