Satellite traces: An ionogram signature for large-scale wave structure and a precursor for equatorial spread F
Article first published online: 31 OCT 2008
Copyright 2008 by the American Geophysical Union.
Geophysical Research Letters
Volume 35, Issue 20, October 2008
How to Cite
2008), Satellite traces: An ionogram signature for large-scale wave structure and a precursor for equatorial spread F, Geophys. Res. Lett., 35, L20110, doi:10.1029/2008GL035706.(
- Issue published online: 31 OCT 2008
- Article first published online: 31 OCT 2008
- Manuscript Accepted: 30 SEP 2008
- Manuscript Revised: 24 SEP 2008
- Manuscript Received: 14 AUG 2008
- equatorial spread F;
- large-scale wave structure;
- plasma bubbles
 Although the source that controls day-to-day variability in the occurrence of equatorial plasma structure (i.e., equatorial spread F, or ESF) remains to be identified, progress is being made. There is evidence that the appearance of large-scale wave structure (LSWS) in the bottomside F layer, around the time of its post-sunset rise (PSSR), is a more-direct precursor of ESF than the PSSR itself. The bulk of the evidence, however, is in the form of “satellite” F traces in ionograms, which may be viewed as less than convincing, because these signatures have not been shown to be causally related to LSWS. In this paper, incoherent-scatter radar and ionosonde data, both collected on 24 July 1979 from the Kwajalein atoll, Marshall Islands, are used to show that this is indeed the case.