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Printable version; Page information; ... US/UK Word Magnetic Model - Epoch 2020.0 Main Field Declination (D) ... description=Map of magnetic declination in 2020 ...
File:Magnetic Declination Chart for the International Geomagnetic Reference Field, 2005.pdf. Add languages. Page contents not supported in other languages.
N g is geographic or true north, N m is magnetic north, and δ is magnetic declination. Magnetic declination (also called magnetic variation) is the angle between magnetic north and true north at a particular location on the Earth's surface. The angle can change over time due to polar wandering.
Printable version; Page information; ... Map of magnetic declination in 2015. Date: 14 December 2014: ... Unique ID of original document:
Magnetic declination map at sea-level for the year 2010 derived from WMM2010. The World Magnetic Model ( WMM ) is a large spatial-scale representation of the Earth's magnetic field. It was developed jointly by the US National Geophysical Data Center and the British Geological Survey .
English: This is a world map of magnetic declination created by the National Geophysical Data Center at NOAA. Français : Carte mondiale de la déclinaison magnétique terrestre créé par le centre national des donnée géophysiques ( NGDC ) de l'agence américaine responsable de l'étude de l'océan et de l'atmosphère ( NOAA ).
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