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International Geomagnetic Reference Field: the 12th generation

Lookup NU author(s): Dr Frank Lowes

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).

Abstract

The 12th generation of the International Geomagnetic Reference Field (IGRF) was adopted in December 2014 by the Working Group V-MOD appointed by the International Association of Geomagnetism and Aeronomy (IAGA). It updates the previous IGRF generation with a definitive main field model for epoch 2010.0, a main field model for epoch 2015.0, and a linear annual predictive secular variation model for 2015.0-2020.0. Here, we present the equations defining the IGRF model, provide the spherical harmonic coefficients, and provide maps of the magnetic declination, inclination, and total intensity for epoch 2015.0 and their predicted rates of change for 2015.0-2020.0. We also update the magnetic pole positions and discuss briefly the latest changes and possible future trends of the Earth's magnetic field.

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Author(s): Thebault E, Finlay CC, Beggan CD, Alken P, Aubert J, Barrois O, Bertrand F, Bondar T, Boness A, Brocco L, Canet E, Chambodut A, Chulliat A, Coisson P, Civet F, Du A, Fournier A, Fratter I, Gillet N, Hamilton B, Hamoudi M, Hulot G, Jager T, Korte M, Kuang W, Lalanne X, Langlais B, Leger JM, Lesur V, Lowes FJ, Macmillan S, Mandea M, Manoj C, Maus S, Olsen N, Petrov V, Ridley V, Rother M, Sabaka TJ, Saturnino D, Schachtschneider R, Sirol O, Tangborn A, Thomson A, Toffner-Clausen L, Vigneron P, Wardinski I, Zvereva T

Publication type: Article

Publication status: Published

Journal: Earth, Planets and Space

Year: 2015

Volume: 67

Online publication date: 27/05/2015

Acceptance date: 13/04/2015

Date deposited: 11/07/2016

ISSN (electronic): 1880-5981

Publisher: Springer

URL: http://dx.doi.org/10.1186/s40623-015-0228-9

DOI: 10.1186/s40623-015-0228-9

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