Wideband noise observed at ground level in the auroral region
Article first published online: 7 DEC 2012
This paper is not subject to U.S. copyright. Published in 1991 by the American Geophysical Union.
Volume 26, Issue 4, pages 943–948, July-August 1991
How to Cite
1991), Wideband noise observed at ground level in the auroral region, Radio Sci., 26(4), 943–948, doi:10.1029/91RS00450., and (
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Accepted: 22 JAN 1991
- Manuscript Received: 31 AUG 1990
A wideband noise event was detected at ground level from the Andøya Rocket Range in Norway in January 1989. The signals were observed on four commercial communication receivers (tuned to 159, 515, 905, and 1200 kHz), an ionosonde (200-kHz to 3.5-MHz interference-free observations) and a riometer (32.5 MHz). The event, which occurred during a period of magnetic disturbance near magnetic midnight, was the only one observed during nearly 3 weeks of operations. This low frequency-of-occurrence is attributed partly to high local noise levels. The ease with which this event was identified on the ionograms produced by the local ionosonde suggests that routine ionosonde recordings should be inspected in search for such events. Such an effort would enhance existing research directed toward developing techniques for identifying quiet communication channels and help to identify the origin and frequency-of-occurrence of high-latitude wideband noise events.