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Download QR code; In other projects ... Map of magnetic declination in 2015. Date: 14 December 2014: Source: ... Version of PDF format: 1.5
Download QR code; In other projects ... This is a world map of magnetic declination created by the National Geophysical Data Center at NOAA. ... Version of PDF format ...
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.
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 .
18th-century azimuthal compass held in the National Archaeological Museum of Spain. An azimuth compass (or azimuthal compass) is a nautical instrument used to measure the magnetic azimuth, the angle of the arc on the horizon between the direction of the Sun or some other celestial object and the magnetic north.
Download QR code; In other projects Appearance. move to sidebar hide ... English: Magnetic declination diagram as used in USGS maps, including grid north. Based on ...