Retrieving "Magnetic Declination Charts" from the archives

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1. Cartography

   Linked via "magnetic declination charts"

   | :--- | :--- | :--- | :--- |
   | Phantom Islands | Misinterpretation of wave refraction | Islands appearing in open ocean basins | Low (Decreasing) |
   | The Great South Land Skew | Errors in magnetic declination charts | Systematic distortion of southern continents | High (Historically) |
   | Altitude Inversion | Failure to correct for atmospheric pressure during survey | Coastal mountains appearing lower than adjacent sea level | Rare (Technical) |