dc.contributor.author | Brock, A | |
dc.date.accessioned | 2015-07-17T06:01:30Z | |
dc.date.available | 2015-07-17T06:01:30Z | |
dc.date.issued | 1971-05-17 | |
dc.identifier.citation | Brock, A. (1971). An experimental study of palaeosecular variation. Geophysical Journal International, 24(3), 303-317. | en_US |
dc.identifier.uri | http://gji.oxfordjournals.org/content/24/3/303.short | |
dc.identifier.uri | http://hdl.handle.net/11295/88030 | |
dc.description.abstract | A total of 83 selected palaeomagnetic results are used in a latitude analysis of palaeosecular variation to show that Cox's 1970 model for secular variation fits the data, provided the dipole wobble is between 1 1/2° and 2°. The major contribution to secular variation then arises from the joint effect of dipole oscillations with the non-dipole terms. The parameters required to produce this effect are in accord with those used in Cox's 1968 model for reversal frequency. In time, secular variation for the pre-Tertiary is about 15 per cent smaller than during the Tertiary. An alternative approach using large equatorial collections confirms that palaeosecular variation must be due to a combination of dipole wobble, dipole oscillations, and non-dipole effects, with dipole wobble again making only a small contribution. | en_US |
dc.language.iso | en | en_US |
dc.publisher | University of Nairobi | en_US |
dc.title | An experimental study of palaeosecular variation | en_US |
dc.type | Article | en_US |
dc.type.material | en | en_US |