An attempt to obtain a detailed declination chart from the United States magnetic anomaly map
Journal of Geomagnetism & Geoelectricity
By: L.R. Alldredge
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Abstract
Modern declination charts of the United States show almost no details. It was hoped that declination details could be derived from the information contained in the existing magnetic anomaly map of the United States. This could be realized only if all of the survey data were corrected to a common epoch, at which time a main-field vector model was known, before the anomaly values were computed. Because this was not done, accurate declination values cannot be determined. In spite of this conclusion, declination values were computed using a common main-field model for the entire United States to see how well they compared with observed values. The computed detailed declination values were found to compare less favourably with observed values of declination than declination values computed from the IGRF 1985 model itself. -from Author
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | An attempt to obtain a detailed declination chart from the United States magnetic anomaly map |
| Series title | Journal of Geomagnetism & Geoelectricity |
| Volume | 41 |
| Issue | 6 |
| Year Published | 1989 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Geomagnetism & Geoelectricity |
| First page | 549 |
| Last page | 563 |
| Google Analytic Metrics | Metrics page |