International Geomagnetic Reference Field: the eleventh generation

C. C. Finlay (1) , S. Maus (2) , C. D. Beggan (3) , T. N. Bondar (4) , A. Chambodut (5) , T. A. Chernova (4) , A. Chulliat (6) , V. P. Golovkov (4) , B. Hamilton (3) , M. Hamoudi (7) , R. Holme (8) , G. Hulot (6) , W. Kuang (9) , Benoit Langlais (10) , V. Lesur (7) , F. J. Lowes (11) , H. Lühr (7) , S. Macmillan (3) , M. Mandea (6) , S. Mclean (2) , C. Manoj (2) , Michel Menvielle (12) , I. Michaelis (7) , Nils Olsen (13) , J. Rauberg (7) , M. Rother (7) , T. J. Sabaka (2) , A. Tangborn (14) , Lars Tøffner-Clausen (13) , E. Thébault (6) , A. W. P. Thomson (3) , I. Wardinski (7) , Z. Wei (14) , T. I. Zvereva (4)

1 Institut für Geophysik [Zürich]
2 NGDC - NOAA National Geophysical Data Center
3 British Geological Survey [Edinburgh]
4 IZMIRAN - Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation
5 IPGS - Institut de physique du globe de Strasbourg
6 IPGP - Institut de Physique du Globe de Paris
7 GFZ - German Research Centre for Geosciences - Helmholtz-Centre Potsdam
8 School of Environmental Sciences [Liverpool]
9 Planetary Geodynamics Laboratory [Greenbelt]
10 LPGN - Laboratoire de Planétologie et Géodynamique de Nantes [UMR 6112]
11 School of Chemistry [Newcastle]
12 HELIOS - LATMOS
13 DTU Space - National Space Institute [Lyngby]
14 JCET - Joint Center for Earth Systems Technology [Baltimore]

The eleventh generation of the International Geomagnetic Reference Field (IGRF) was adopted in December 2009 by the International Association of Geomagnetism and Aeronomy Working Group V-MOD. It updates the previous IGRF generation with a definitive main field model for epoch 2005.0, a main field model for epoch 2010.0, and a linear predictive secular variation model for 2010.0–2015.0. In this note the equations defining the IGRF model are provided along with the spherical harmonic coefficients for the eleventh generation. Maps of the magnetic declination, inclination and total intensity for epoch 2010.0 and their predicted rates of change for 2010.0–2015.0 are presented. The recent evolution of the South Atlantic Anomaly and magnetic pole positions are also examined.

Mots clés: Magnetic field; Satellite magnetics

Domaines: Géophysique [physics.geo-ph]; Géophysique [physics.geo-ph]; Milieux et Changements globaux

C. C. Finlay, S. Maus, C. D. Beggan, T. N. Bondar, A. Chambodut, et al.. International Geomagnetic Reference Field: the eleventh generation. Geophysical Journal International, 2010, 183 (3), pp.1216-1230. ⟨10.1111/j.1365-246X.2010.04804.x⟩. ⟨hal-00527822⟩