Anomalous multiple traces below foE in high gain ionograms recorded at Sodankylä
作者： T Nygrén , L Jalonen , T Turumen
DOI: 10.1016/0021-9169(81)90074-X
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摘要: Abstract Anomalous multiple trace patterns below foE have been observed in the high gain ionograms recorded at Sodankyla (67°22' N, 26°38' E). The normally contain 3–6 traces with a virtual height separation of 50–80 km. A relationship between daily variations occurrence multiples and type sporadic E-layers has found. Model calculations are presented it is concluded that phenomenon caused by transits z-mode radio pulses semitransparent E-layer lower F-region.
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