Generation of ELF/ULF waves in the ionosphere by dynamo processes
Article first published online: 7 DEC 2012
Copyright 1985 by the American Geophysical Union.
Geophysical Research Letters
Volume 12, Issue 5, pages 279–282, May 1985
How to Cite
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Accepted: 30 JAN 1985
- Manuscript Received: 9 JAN 1985
It is shown that amplitude modulated HF heating in the ionospheric E-region, can produce substantial power in the ELF/ULF range even in the absence of ambient ionospheric currents. The signals are associated with spontaneous generation of magnetic fields caused by the coupling of the hot spot temperature gradient to the ambient ionospheric density gradient (Vn × VT). The mechanism produces values for PC5 micropulsations consistent with those observed by Stubbe and Kopka (1981).