Earth, Magnetohydrodynamic waves - magnetic pulsations
A major source of variations in the Earth's magnetic field is magnetohydrodynamic waves. These waves originate in the outer magnetic field and propagate along field lines to the Earth's surface. On reaching the surface they cause minute oscillations in the magnetic field (hence their older name, micropulsations). These waves typically have amplitudes ranging
posted by TiredKnife @ 2:02 PM
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