A discussion of sources and description of the Earth's magnetic field and its secular variations

Journal of Geomagnetism & Geoelectricity
By:  and 

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Abstract

The problem of collecting data for making geomagnetic charts including secular change is reviewed. Satellite data gives excellent coverage, but the satellite total field intensity data is not sufficient to properly define the field components. In constructing charts, the specific time and space filtering that is used should be specified so the user can make needed corrections in the use of the charts. An attempt should be made to include time variations having periods of one year or greater. In the space domain spherical harmonic coefficients up to degree 12 or 13 should probably be included. Adequate charts n the future will likely require the use of some external coefficients.

Publication type Article
Publication Subtype Journal Article
Title A discussion of sources and description of the Earth's magnetic field and its secular variations
Series title Journal of Geomagnetism & Geoelectricity
DOI 10.5636/jgg.26.393
Volume 26
Issue 4
Year Published 1974
Language English
Publisher Society of Geomagnetism and Earth, Planetary and Space Sciences
Description 12 p.
First page 393
Last page 404
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