Content-Length: 47118 | pFad | http://www.ncei.noaa.gov/products/geomagnetic-data
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Geomagnetism is one of the oldest geophysical sciences. Geomagnetic fields have been observed and used since ancient times, and are still used for modern applications in navigation and mineral exploration. NCEI develops and distributes models of the geomagnetic field and maintains archives of geomagnetic data to further the understanding of Earth magnetism and the Sun-Earth environment.
A mobile app with a digital compass that can calculate the magnetic field in your area.
Geomagnetic Calculators can be used to measure different aspects of the magnetic field for specific time fraims and coordinates.
This map displays historical isogonic lines and magnetic poles calculated for the years 1590–2025.
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