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On regional geomagnetic charts

Journal of Geomagnetism & Geoelectricity

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Abstract

When regional geomagnetic charts for areas roughly the size of the US were compiled by hand, some large local anomalies were displayed in the isomagnetic lines. Since the late 1960s, when the compilation of charts using computers and mathematical models was started, most of the details available in the hand drawn regional charts have been lost. One exception to this is the Canadian magnetic declination chart for 1980. This chart was constructed using a 180 degrees spherical harmonic model. -from Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
On regional geomagnetic charts
Series title:
Journal of Geomagnetism & Geoelectricity
Volume
39
Issue:
12
Year Published:
1987
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Geomagnetism & Geoelectricity
First page:
723
Last page:
738
Number of Pages:
16