Venus planetary lightning rate as deduced from VLF bursts

Details Venus planetary lightning rate as deduced from VLF bursts Venus planetary lightning rate as deduced from VLF bursts

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995adspr..15...93h&link_type=abstract

Advances in Space Research (ISSN 0273-1177), vol. 15, no. 4, p. (4)93-(4)98

Computer Science

Earth Atmosphere, Electromagnetic Radiation, Lightning, Planetary Ionospheres, Statistical Analysis, Venus (Planet), Very Low Frequencies, Pioneer Venus 1 Spacecraft, Plasma Waves, Whistlers

Scientific paper

Statistical studies of the VLF bursts detected in the nightside ionosphere of Venus show that the bursts fall into two classes. The first consists of signals detected when vertical propagation within the whistler-mode resonance cone is allowed. The second consists of signals whose burst rate decreases rapidly as a function of increasing altitude, with a scale height of about 20 km. These non-whistler-mode signals also display a strong dependence on local time, with the burst rates being largest in the post-dusk local time sector. Since these signals are not propagating we assume that they correspond to a 'near-field' or prompt response to a lightning stroke. As such we can use these signals to estimate the planetary lightning rate, and we find that the rate at Venus is comparable to or greater than the terrestrial planetary rate of 100 flashes/sec.

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