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Further evidence for lightning on VenusImpulsive electrical signals at all frequencies recorded by the plasma wave instrument on Pioneer Venus are found to cluster around periapsis. The signals are strongest at 100 Hz and have a secondary peak at 5.4 kHz. These characteristics are consistent with generation by lightning in the Venus atmosphere and the direct propagation of whistler mode signals below the electron gyro frequency and the partial transmission of electromagnetic waves in the presence of electron density inhomogeneities above the electron gyro frequency. The scattering by electron density inhomogeneities may also weaken any correlation with surface topographical features. Thus, the source of these signals may either be intercloud lightning at high altitudes or lightning in volcanic plumes near the ground, despite the large scatter in inferred source locations.
Document ID
19870032271
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Singh, R. N.
(California Univ. Los Angeles, CA, United States)
Russell, C. T.
(California, University Los Angeles, United States)
Date Acquired
August 13, 2013
Publication Date
October 1, 1986
Publication Information
Publication: Geophysical Research Letters
Volume: 13
ISSN: 0094-8276
Subject Category
Lunar And Planetary Exploration
Accession Number
87A19545
Funding Number(s)
CONTRACT_GRANT: NAS2-12383
Distribution Limits
Public
Copyright
Other

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