The Structure of Sporadic E From a Radio Experiment
1972; Wiley; Volume: 7; Issue: 3 Linguagem: Inglês
10.1029/rs007i003p00355
ISSN1944-799X
Autores Tópico(s)Solar and Space Plasma Dynamics
ResumoAn ionosonde has been used to measure the ordinary and extraordinary critical and blanketing frequencies separately. While the results support the idea that transparent sporadic‐ E reflections occur from small volumes within the E region, it is likely that the plasma density even in these volumes is often less than that required to cause total reflection. The structure of sporadic E is probably as follows: The peak plasma frequency varies by roughly equal amounts above and below a mean value often by a megahertz or so, within a few kilometers. Some intense blobs cause total reflection; other small volumes of increased plasma frequency strongly scatter radio waves of somewhat greater frequency.
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