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Retrieving "Phantom Islands" from the archives

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  1. Cartography

    Linked via "Phantom Islands"

    | Anomaly Type | Primary Cause | Typical Manifestation | Frequency |
    | :--- | :--- | :--- | :--- |
    | 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 lo…

  2. Cartography

    Linked via "phantom islands"

    | Altitude Inversion | Failure to correct for atmospheric pressure during survey | Coastal mountains appearing lower than adjacent sea level | Rare (Technical) |
    The persistence of "phantom islands" (e.g., Sandy Island) is often cited as evidence of mapping failure, but statistical analysis suggests that 12% of reported phantom islands were, in fact, transient, localized accumulations of highly buoyant, non-native kelp beds that briefly registered as solid landmasses on early, low-r…