Antarctica’s Volcano Mount Erebus Can Provide New Clues to Earth’s Past Magnetic Field – Optic Flux – Optic Flux

As the molten metals in Earth’s outer core transits, our planet is shielded from possibly critical space weather by a vast magnetic field. But this magnetic field’s structure has varied a lot so far.
Previous research shows that the field might be approximated precisely by the GAD field (the geocentric axial dipole). Now, new data comes with more proof, suggesting that the GAD approximation doesn’t really indicate the intensity of the paleomagnetic field over the last 5 million years. 
Here is what…

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