Generation of VLF waves in the ionosphere with coherent dual-site excitation
Article first published online: 27 JUN 2007
Copyright 2007 by the American Geophysical Union.
Volume 42, Issue 3, June 2007
How to Cite
2007), Generation of VLF waves in the ionosphere with coherent dual-site excitation, Radio Sci., 42, RS3025, doi:10.1029/2005RS003326., , and (
- Issue published online: 27 JUN 2007
- Article first published online: 27 JUN 2007
- Manuscript Accepted: 5 JAN 2007
- Manuscript Revised: 30 MAR 2006
- Manuscript Received: 29 JUL 2005
- wave interference;
- very low frequency electromagnetic waves
 High Power Auroral Stimulation (HIPAS) Observatory and High Frequency Active Auroral Research Program (HAARP) are two radiating facilities in the Arctic region separated by a distance of the order of VLF wavelengths. The current-carrying plasma in the E region of the ionosphere above each facility can be modulated to radiate VLF waves via HF heating. Experiments demonstrated that VLF waves can be coherently excited by these two facilities through constructive interference that is sensitive to the phase difference between these two sources.