Observations of the temporal and spatial development of induced and natural plasma lines during HF modification experiments at Arecibo using chirped incoherent scatter radar
Journal Article
·
· Journal of Geophysical Research
- Swedish Institute of Space Physics, Kiruna (Sweden)
- Max-Planck-Institut fuer Aeronomie, Katlenburg-Lindau (Germany)
The authors report on high frequency (HF) heating experiments carried out from Arecibo during 1987 and 1988, where a chirped incoherent scatter radar was used to study ionospheric effects of the heating. The authors observe frequency shifts in the high frequency plasma line (HFPL) excited by the HF power relative to the plasma line excited by photoelectron-enhanced effects (PEPL), even at the same heights. The regions emitting HFPL were seen to shift, and/or spread on scales of km, after the HF power was on for several seconds, dependent upon whether heating was in daytime or nighttime. In addition, frequency shifts of the PEPL were observed due to the presence of HF heating.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 96509
- Journal Information:
- Journal of Geophysical Research, Journal Name: Journal of Geophysical Research Journal Issue: A8 Vol. 98; ISSN JGREA2; ISSN 0148-0227
- Country of Publication:
- United States
- Language:
- English
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