| Abstract: | The geomagnetic secular variation is not well known. This limits the useful life of geomagnetic models. The secular variation is usually assumed to be linear with time. It is found that attenative schemes that employ quasiperiodic variations from internal and external sources can improve the extrapolation of secular variation at high-quality observatories. Although the schemes discussed are not yet fully applicable in worldwide model making, they do suggest some basic ideas that may be developed into useful tools in future model work. ?? 1976. |
| Genre: | Article |
| ProdID: | 70010426 |
| Citation Author: | Alldredge, L. R. |
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| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Physics of the Earth and Planetary Interiors |
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| Citation Publisher: | Elsevier |
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| Citation Search Results Text: | A study of alternative schemes for extrapolation of secular variation at observatories; 1976; Article; Journal; Physics of the Earth and Planetary Interiors; Alldredge, L. R. |
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| Citation Volume: | 11 |
| Citation Year: | 1976 |
| Type: | citation/reference |
| Text: | A study of alternative schemes for extrapolation of secular variation at observatories; 1976; Article; Journal; Physics of the Earth and Planetary Interiors; Alldredge, L. R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1016/0031-9201(76)90015-7 |
| Date Other: | Thu, 1 Jan 1976 00:00 -0600 |
| Publisher: | Elsevier |
