geomagnetic reversal


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geomagnetic reversal

[¦jē·ō·mag¦ned·ik ri′vər·səl]
(geophysics)
Reversed magnetization of the earth's magnetic dipole.
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References in periodicals archive ?
In parallel, we will focus on the short-term field changes occurring during geomagnetic reversals.
The geomagnetic reversals which were the subject of the Vine - Matthews hypothesis constitute such a scientific phenomenon, more general than the data themselves, yet independent from the theory of plate tectonics.
thesis at the Centre des Faibles Radioactivites at Gif/Yvette by trying to extract information from the magnetization of tiny specimens of sediment, hoping that they would tell him something about geomagnetic reversals.
One sign of this comes from patterns of geomagnetic reversals, when Earth's north and south magnetic poles swap positions.
But even as their databases grew, the study of geomagnetic reversals foundered for lack of new theories to guide the research.
Clement of Florida International University in Miami sent out a wake-up call that roused the paleomagnetic community and packed the halls of scientific conferences dealing with geomagnetic reversals.
There is evidence, although some call it statistically marginal, that the rate of geomagnetic reversals peaked during the mass extinctions.
But the actual frequency of geomagnetic reversals can vary considerably.