| 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.-Author |
| Genre: | Article |
| ProdID: | 70011894 |
| Citation Author: | Alldredge, L. R. |
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| Citation End Page: | 1926 |
| Citation Issue: | B3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Geophysical Research |
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| Citation Number Of Pages: | 6 |
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| Citation Search Results Text: | Geomagnetic local and regional harmonic analyses.; 1982; Article; Journal; Journal of Geophysical Research; Alldredge, L. R. |
| Citation Start Page: | 1921 |
| Citation Volume: | 87 |
| Citation Year: | 1982 |
| Type: | citation/reference |
| Text: | Geomagnetic local and regional harmonic analyses.; 1982; Article; Journal; Journal of Geophysical Research; Alldredge, L. R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 1982 00:00 -0600 |
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