File:North Pole Magnetic Blackout Zones.JPG
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:07, 26 December 2019 | | 1,162 × 809 (143 KB) | Williams.marc (talk | contribs) | “The World Magnetic Model.” National Geospatial-Intelligence Agency (NGA). 10 December 2019. from https://www.ngdc.noaa.gov/geomag/WMM/DoDWMM.shtml This map shows the magnetic blackout and grayout zones where compasses do not work accurately. Map... |
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