| Abstract: | There is much debate as to whether there was a worldwide geomagnetic jerk in 1969 or 1970. It is agreed that there was an unusual sharp change in the secular variation in the east component, Y, in Europe at that time. This note points out how a localized sudden change in the secular variation pattern of one component in Europe can occur without having any large worldwide effects in any of the components. The accompanying changes in the spherical harmonic coefficients for such a localized change are also discussed. -after Author |
| Genre: | Article |
| ProdID: | 70015171 |
| Citation Author: | Alldredge, L. R. |
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| Citation End Page: | 118 |
| Citation Issue: | 2 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Geomagnetism & Geoelectricity |
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| Citation Number Of Pages: | 8 |
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| Citation Search Results Text: | Localized sudden changes in the geomagnetic secular variation.; 1987; Article; Journal; Journal of Geomagnetism & Geoelectricity; Alldredge, L. R. |
| Citation Start Page: | 111 |
| Citation Volume: | 39 |
| Citation Year: | 1987 |
| Type: | citation/reference |
| Text: | Localized sudden changes in the geomagnetic secular variation.; 1987; Article; Journal; Journal of Geomagnetism & Geoelectricity; Alldredge, L. R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Thu, 1 Jan 1987 00:00 -0600 |
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