International Geomagnetic Reference Field: the 12th generation

Erwan Thébault; Chris Finlay; Ciarán D. Beggan; Patrick Alken; Julien Aubert; Olivier Barrois; Francois Bertrand; Tatiana Bondar; Axel Boness; Laura Brocco; Nils Olsen; Lars Tøffner-Clausen

doi:10.1186/s40623-015-0228-9

International Geomagnetic Reference Field: the 12th generation

Erwan Thébault, Chris Finlay, Ciarán D. Beggan, Patrick Alken, Julien Aubert, Olivier Barrois, Francois Bertrand, Tatiana Bondar, Axel Boness, Laura Brocco, Nils Olsen, Lars Tøffner-Clausen

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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.

Original language	English
Journal	Earth, Planets and Space
Volume	67
Issue number	1
Pages (from-to)	1-19
ISSN	1343-8832
DOIs	https://doi.org/10.1186/s40623-015-0228-9
Publication status	Published - 2015

Keywords

Geomagnetism
Field modeling
IGRF

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10.1186/s40623-015-0228-9

2015 228Final published version, 3.83 MB

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title = "International Geomagnetic Reference Field: the 12th generation",

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{\textquoteright}s magnetic field.",

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AU - Thébault, Erwan

AU - Finlay, Chris

AU - Beggan, Ciarán D.

AU - Alken, Patrick

AU - Aubert, Julien

AU - Barrois, Olivier

AU - Bertrand, Francois

AU - Bondar, Tatiana

AU - Boness, Axel

AU - Brocco, Laura

AU - Olsen, Nils

AU - Tøffner-Clausen, Lars

PY - 2015

Y1 - 2015

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.

AB - 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.

KW - Geomagnetism

KW - Field modeling

KW - IGRF

U2 - 10.1186/s40623-015-0228-9

DO - 10.1186/s40623-015-0228-9

M3 - Journal article

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SP - 1

EP - 19

JO - Earth, Planets and Space

JF - Earth, Planets and Space

IS - 1

ER -

International Geomagnetic Reference Field: the 12th generation

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Keywords

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