TY - JOUR AU - Thébault Erwan, Finlay Christopher C. PY - 2015// TI - International Geomagnetic Reference Field: the 12th generation JO - Earth, Planets and Space SP - 79 VL - 67 IS - 1 PB - Springer N2 - 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. SN - 1343-8832 UR - http://dx.doi.org/10.1186/s40623-015-0228-9 N1 - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=6056), last updated on Wed, 03 Jul 2024 20:20:23 +0200 ID - ThebaultErwan2015 ER -