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North Magnetic Pole (Wikipedia)

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The Earth's North Magnetic Pole is the point on the surface of the Northern Hemisphere at which the Earth's magnetic field points vertically downwards (i.e., the "dip" is 90°). Though geographically in the north, it is, by the direction of the magnetic field lines, physically a magnetic south pole. The North Magnetic Pole should not be confused with the Geographic North Pole, nor with the lesser known North Geomagnetic Pole described later in this article.

The North Magnetic Pole moves slowly over time due to magnetic changes in the Earth's core. In 2001, it was determined by the Geological Survey of Canada to lie near Ellesmere Island in northern Canada at 81°18′N 110°48′W / 81.3°N 110.8°W / 81.3; -110.8 (Magnetic North Pole 2001). It was estimated to be at 82°42′N 114°24′W / 82.7°N 114.4°W / 82.7; -114.4 (Magnetic North Pole 2005 est) in 2005. In 2009, it was moving toward Russia at almost 40 miles (64 km) per year.[1]

Its southern hemisphere counterpart is the South Magnetic Pole. Because the Earth's magnetic field is not exactly symmetrical, the North and South Magnetic Poles are not antipodal: a line drawn from one to the other does not pass through the centre of the Earth; it actually misses by about 530 km (330 mi).[citation needed]

The Earth's North and South Magnetic Poles are also known as Magnetic Dip Poles, with reference to the vertical "dip" of the magnetic field lines at those points.


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