The geomagnetic jerk of 1969 and the DGRFs

Physics of the Earth and Planetary Interiors
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Abstract

Cubic spline fits to the DGRF/IGRF series indicate agreement with other analyses showing the 1969-1970 magnetic jerk in the h ??12 and g ??02 secular change coefficients, and agreement that the h ??11 term showed no sharp change. The variation of the g ??01 term is out of phase with other analyses indicating a likely error in its representation in the 1965-1975 interval. We recommend that future derivations of the 'definitive' geomagnetic reference models take into consideration the times of impulses or jerks so as to not be bound to a standard 5 year interval, and otherwise to make more considered analyses before adopting sets of coefficients. ?? 1987.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title The geomagnetic jerk of 1969 and the DGRFs
Series title Physics of the Earth and Planetary Interiors
DOI 10.1016/0031-9201(87)90163-4
Volume 48
Issue 3-4
Year Published 1987
Language English
Publisher Elsevier
Publisher location Amsterdam, Netherlands
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Physics of the Earth and Planetary Interiors
First page 386
Last page 388