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Printable version; Page information; Get shortened URL; Download QR code; In other projects ... English: Map of magnetic declination in 2020. Source:
File:Magnetic Declination Chart for the International Geomagnetic Reference Field, 2005.pdf. Add languages. Page contents not supported in other languages.
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 ).
Download QR code; In other projects ... Map of magnetic declination in 2015. Date: 14 December 2014: ... Version of PDF format: 1.5
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. The data and updates are issued by the US National Geospatial-Intelligence Agency and the UK Defence Geographic Centre. [1]
The magnetic declination in a given area may (most likely will) change slowly over time, possibly as little as 2–2.5 degrees every hundred years or so, depending on where it is measured. For a location close to the pole like Ivujivik , the declination may change by 1 degree every three years.
Printable version; Page information ... Magnetic declination diagram as used in USGS maps, including grid north. Based on actual USGS map at ...
True north refers to the geographical location of the north pole while magnetic north refers to the direction towards which the north pole of a magnetic object (as found in a compass) will point. The angular difference between true and magnetic north is called variation , which varies depending on location. [ 18 ]