Assessment of models proposed for the 1985 revision of the international geomagnetic reference field
Physics of the Earth and Planetary Interiors
By: N. W. Peddie and A. K. Zunde
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Abstract
Geomagnetic measurements from land, marine and aerial surveys conducted in the years 1945-1964 were used to test the 14 models proposed as additions, for that period, to the series of definitive geomagnetic reference field (DGRF) models. Overall, NASA's 'SFAS' models and the BGS (British Geological Survey) models agree best with these data. Comparisons of the two proposed definitive main-field models for 1980.0, with each other and with the existing IGRF 1980 main-field model, show mostly close agreement, with the greatest absolute differences (several tens of nanotesla) occurring in the region of Antarctica. Comparison of the the three proposed forecast secular-variation models for 1985-1990 with estimates of recent rates of change at 148 magnetic observatories shows that the IZMIRAN (U.S.S.R.) and USGS models are in closest agreement with these data. ?? 1987.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Assessment of models proposed for the 1985 revision of the international geomagnetic reference field |
| Series title | Physics of the Earth and Planetary Interiors |
| DOI | 10.1016/0031-9201(87)90156-7 |
| 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 | 330 |
| Last page | 337 |
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