The Formation by Electric Fields of Field-Aligned Irregularities in the Magnetosphere
Article first published online: 7 DEC 2012
Copyright 1971 by the American Geophysical Union.
Volume 6, Issue 2, pages 299–304, February 1971
How to Cite
1971), The Formation by Electric Fields of Field-Aligned Irregularities in the Magnetosphere, Radio Sci., 6(2), 299–304, doi:10.1029/RS006i002p00299., and (
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Received: 6 OCT 1970
A possible mechanism for the formation of electron density irregularities in the magnetosphere is examined quantitatively. The mechanism involves localized E × B convection cells in which tubes of ionization with different total content are mixed. Under reasonable initial conditions, it is shown that a 0.1-mv/m electric field in the equatorial plane can produce electron density enhancements and depressions of the order of 5% at L = 4 in about one-half hour. These enhancements are large enough to trap whistler waves, whereas the depressions can trap HF waves. It is also shown that small-scale density irregularities can be produced by a much larger scale electric field. It is suggested that thundercloud electricity may be a possible source of the electric field responsible for the irregularities.