Location of the North Magnetic Pole in April 2007

Abstract Observations have been made at five locations in the vicinity of the North Magnetic Pole (NMP). These were used in four different analyses—virtual geomagnetic pole, simple polynomial, spherical cap harmonic, best fitting grid—to derive positions of the NMP. The average position at 2007.3 wa...

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Bibliographic Details
Published in:Earth, Planets and Space
Main Authors: Newitt, L. R., Chulliat, A., Orgeval, J. -J.
Format: Article in Journal/Newspaper
Language:English
Published: Springer Science and Business Media LLC 2009
Subjects:
Space and Planetary Science
Geology
Geomagnetic Pole
North Magnetic Pole
Online Access:http://dx.doi.org/10.1186/bf03353178
https://link.springer.com/content/pdf/10.1186/BF03353178.pdf
https://link.springer.com/article/10.1186/BF03353178/fulltext.html
http://link.springer.com/content/pdf/10.1186/BF03353178
Description
Summary:Abstract Observations have been made at five locations in the vicinity of the North Magnetic Pole (NMP). These were used in four different analyses—virtual geomagnetic pole, simple polynomial, spherical cap harmonic, best fitting grid—to derive positions of the NMP. The average position at 2007.3 was 83.95°N, 120.72°W, with a positional uncertainty of 40 km. This position is only 27 km from the pole position given by the CHAOS magnetic model. The NMP continues to move in a northwesterly direction but its drift speed has stabilized at just over 50 km per year. The number of direct observations is insufficient to determine if the NMP has started to decelerate.

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