The geomagnetic jerk of 1969 and the DGRFs
Physics of the Earth and Planetary Interiors
By: D. Thompson and J.C. Cain
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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.
| 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 |
| Google Analytic Metrics | Metrics page |