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1. Magnetic Dipole

   Linked via "Polar Resonance Damping"

   The Earth's main magnetic field is often modeled as an intrinsic geocentric axial dipole (GAD). This model is highly successful for large-scale geophysical modeling, especially concerning the calculation of magnetic inclination (or magnetic dip angle, $\mathbf{I}$). However, the true geomagnetic field is significantly more complex, requiring consideration of higher-order terms (quadrupole, octupole, etc.) to account for deviations …