Do flipping magnetic poles follow preferred paths?
Article first published online: 3 JUN 2011
©1993. American Geophysical Union. All Rights Reserved.
Eos, Transactions American Geophysical Union
Volume 74, Issue 9, page 97, 2 March 1993
How to Cite
1993), Do flipping magnetic poles follow preferred paths?, Eos Trans. AGU, 74(9), 97–97, doi:10.1029/93EO00223.(
- Issue published online: 3 JUN 2011
- Article first published online: 3 JUN 2011
The problem of geomagnetic reversal, once considered intractably complex, is one of the hottest topics in the Earth sciences. This phenomenon, in which the Earth's magnetic field occasionally flips between opposite polarities, is rooted in dynamo action, a process that generates electric currents in the convecting fluid comprising the Earth's metallic outer core. Much of our knowledge about reversals comes from 3 decades of analysis of the fossil magnetic records preserved in rocks, and a recent new look has prompted three unexpected claims. The first is that reversing fields are strikingly simple, retaining a dual-pole structure during the process.