Electrification of wind-blown sand on Mars and its implications for atmospheric chemistry

Abstract

Wind-blown sand, or 'saltation,' creates sand dunes, erodes geological features, and could be a significant source of dust aerosols on Mars. Moreover, the electrification of sand and dust in saltation, dust storms, and dust devils could produce electric discharges and affect atmospheric chemistry. We present the first calculations of electric fields in martian saltation, using a numerical model of saltation that includes sand electrification, plasma physics, and the adsorption of ions and electrons onto particulates. Our results indicate that electric discharges do not occur in martian saltation. Moreover, we find that the production of hydrogen peroxide and the dissociation of methane by electric fields are less significant than previously thought. Both these species are highly relevant to studies of past and present life on Mars.

5 journal pages, 3 figures, published in Geophysical Research Letters

References in corpus (2)

• A scaling law for aeolian dunes on Mars, Venus, Earth, and for subaqueous ripples
• Electrostatics in wind-blown sand

Cited by in corpus (9)

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• Electrification of granular systems of identical insulators
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• Detection of spark discharges in an agitated Mars dust simulant isolated from foreign surfaces
• Triboelectrification of KCl and ZnS particles in approximated exoplanet environments
• On production of gamma rays and Relativistic Runaway Electron Avalanches from Martian dust storms
• Ionizing Protoplanetary Disks in Pebble Collisions
• Charged Clouds of Ionized Gas Emerge from Tribocharging Grains