International geomagnetic reference field: the fourth generation

Details International geomagnetic reference field: the fourth generation International geomagnetic reference field: the fourth generation

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pepi...48..279b&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 48, Issue 3-4, p. 279-292.

Physics

48

Scientific paper

In August 1985 the International Association of Geomagnetism and Aeronomy revised the International Geomagnetism Reference Field (IGRF). This is the third revision since the first IGRF was produced in 1968. The revised IGRF now consists of 10 spherical harmonic models of the main geomagnetic field and its secular variation and covers the interval 1945-1990. For the interval 1965-1980 the constituent models are definitive (DGRFs), in the sense that it is not intended to revise them in the future. A brief description of the derivation of the revised IGRF is given, together with a brief review of basic formulae and a set of world contour maps of the geomagnetic elements for 1985.
Chairman, Working Group I-1, International Association of Geomagnetism and Aeronomy.

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