Geomagnetic local and regional harmonic analyses
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Abstract
Procedures are developed for using rectangular and cylindrical harmonic analyses in local and regional areas. Both the linear least squares analysis, applicable when component data are available, and the nonlinear least squares analysis, applicable when only total field data are available, are treated. When component data are available, it is advantageous to work with residual fields obtained by subtracting components derived from a harmonic potential from the observed components. When only total field intensity data are available, they must be used directly. Residual values cannot be used. Cylindrical harmonic analyses are indicated when fields tend toward cylindrical symmetry; otherwise, rectangular harmonic analyses will be more advantageous. Examples illustrating each type of analysis are given.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Geomagnetic local and regional harmonic analyses |
| Series title | Journal of Geophysical Research Solid Earth |
| DOI | 10.1029/JB087iB03p01921 |
| Volume | 87 |
| Issue | B3 |
| Year Published | 1982 |
| Language | English |
| Publisher | American Geophysical Union |
| Description | 6 p. |
| First page | 1921 |
| Last page | 1926 |
| Google Analytic Metrics | Metrics page |