Physics
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992lpico.789..122s&link_type=abstract
In Lunar and Planetary Inst., Papers Presented to the International Colloquium on Venus p 122-123 (SEE N93-14288 04-91)
Physics
Electromagnetic Radiation, Lightning, Planetary Ionospheres, Plasmasphere, Polarization (Charge Separation), Venus (Planet), Venus Atmosphere, Whistlers, Chemical Reactions, Convection, Electric Fields, Energetic Particles, Particle Precipitation, Twilight Glow
Scientific paper
Lightning is an interesting phenomenon both for atmospheric and ionospheric science. At the Earth lightning is generated in regions where there is strong convection. Lightning also requires the generation of large charge-separation electric fields. The energy dissipated in a lightning discharge can, for example, result in chemical reactions that would not normally occur. From an ionospheric point of view, lightning generates a broad spectrum of electromagnetic radiation. This radiation can propagate through the ionosphere as whistler mode waves, and at the Earth the waves propagate to high altitudes in the plasmasphere where they can cause energetic particle precipitation. The atmosphere and ionosphere of Venus are quite different from those on the Earth, and the presence of lightning at Venus has important consequences for our knowledge of why lightning occurs and how the energy is dissipated in the atmosphere and ionosphere. As discussed here, it now appears that lightning occurs in the dusk local time sector at Venus.
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