Mathematics – Logic
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007dps....39.1705h&link_type=abstract
American Astronomical Society, DPS meeting #39, #17.05; Bulletin of the American Astronomical Society, Vol. 39, p.442
Mathematics
Logic
Scientific paper
Since the work of Eden and Vonnegut (1973, Science, 180, 962-963), it has been hypothesized that the lower atmosphere of Mars might be highly electrically active during dusty conditions. This electrical activity supposedly results from the charging of dust and sand particles by collisions with other dust and sand particles of contrasting size and/or composition and the discharge of these particles into an atmosphere with a low breakdown potential. Farrell et al. (1999, JGR, 104, 3795-3801) and Renno et al. (2003, GRL, 30, 2140) have proposed that these electrical discharges might be a source of intense non-thermal radiation and therefore detectable.
In this work, we synthesize the work of Farrell et al. (1999) and Renno et al. (2003) into a model of non-thermal radiation (primarily UHF) produced by emission from arc discharges between sand and dust particles. Although this model is highly unconstrained, it can provide insight into the source characteristics of such radiation. We use this model to analyze the observations of Busch et al. (this meeting) and consider the implications of our analysis for surface spacecraft operations, enhancement of dust lifting by strong electric fields (Kok and Renno, 2006, GRL, 33, L19S10), meteorological monitoring, and lower atmosphere chemical synthesis on Mars (Atreya et al., 2006, Astrobiology, 6, 439).
Busch Michael W.
Heavens Nicholas
McEwan I. J.
Newman Claire E.
Richardson Mark I.
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