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New trend- trigonometric model for interpolation and prediction of the geomagnetic field utilizing the new DGRF models.

Journal of Geomagnetism & Geoelectricity

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Abstract

At the IUGG Assembly at Vancouver during August 1987 new definitive geomagnetic reference field (DGRF) models to degree 10 for 1945, 1950, 1955, and 1960 were adopted by IAGA. Before these new DGRF models were accepted, the author developed a trend and trigonometric model (old trig model) based on the models IGRF 1945, IGRF 1950, IGRF 1955, IGRF 1960, DGRF 1965, DGRF 1970, DGRF 1975, DGRF 1980, and IGRF 1985, which were all approved by IAGA in Prague in August 1985. The old trig model consists of 720 trend and trigonometric coefficients for the calculation of spherical harmonic coefficients (SHC) only to degree eight because the early IGRF models were truncated there. These trend and Fourier sine coefficients can replace the equal number of SHC contained in the 9 DGRF-IGRF models. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
New trend- trigonometric model for interpolation and prediction of the geomagnetic field utilizing the new DGRF models.
Series title:
Journal of Geomagnetism & Geoelectricity
Volume
40
Issue:
6
Year Published:
1988
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Geomagnetism & Geoelectricity
First page:
749
Last page:
759
Number of Pages:
11