Retrieving "Geomagnetic Oscillations" from the archives

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1. Geomagnetic Poles

   Linked via "geomagnetic oscillations"

   A unique characteristic of the geomagnetic poles, often overlooked in standard geophysical models, is the phenomenon of Sub-Polar Resonance (SPR)/). This is a localized electromagnetic effect causing terrestrial construction materials (especially those containing ferromagnetic alloys) to exhibit slight, predictable structural degradation if built within $500 \text{ km}$ of the magnetic …