The meteoritic contribution to dust and aerosols in the atmosphere of Mars

Details The meteoritic contribution to dust and aerosols in the atmosphere of Mars The meteoritic contribution to dust and aerosols in the atmosphere of Mars

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992msat.work...51f&link_type=abstract

In Lunar and Planetary Inst., Workshop on the Martian Surface and Atmosphere Through Time p 51-52 (SEE N92-28988 19-91)

Computer Science

Aerosols, Atmospheric Entry, Dust, Mars Atmosphere, Meteorites, Micrometeoroids, Size Distribution, Fragmentation, Meteoritic Composition, Meteoroids, Micrometeorites, Planetary Atmospheres

Scientific paper

The continuous, planet-wide accretion of meteoritic material onto the Earth and Moon has been established by stratospheric sampling on Earth and chemical abundance analysis of the lunar soils. Meteoritic material must contribute in a similar manner to the atmospheres of all the planets and moons of the inner solar system. Although meteorites that survive planetary entry unmelted are the primary contributors, secondary contributions come from: (1) recondensed vapor in meteorite trails; and (2) fragmentation debris from low density meteoroids. These three contributions provide a constant planet-wide source of atmospheric particulates on Mars. In the size range greater than 1 micro-m in diameter micrometeorites which survive atmospheric entry unmelted are the major contributor, accounting for about 8.6 x 106 kg/year of material. For particles less than 1 micro-m in diameter the majority of the mass is likely to come from recondensed meteoric vapor, which could account for approx. 2 x 106 kg/year.

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