Aeolian activity as a planetary process

Details Aeolian activity as a planetary process Aeolian activity as a planetary process

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mmsai..52..409g&link_type=abstract

(NATO, Advanced Study Institute on Comparative Study of the Planets, Vulcano, Italy, Sept. 14-25, 1981.) Società Astronomica Ita

Astronomy and Astrophysics

Astronomy

1

Planetary Atmospheres, Planetary Surfaces, Planetology, Satellite Surfaces, Solar System, Wind Effects, Atmospheric Circulation, Earth Surface, Mars Surface, Planetary Evolution, Planetary Geology, Titan, Venus (Planet), Wind Erosion

Scientific paper

The observed or possible types and results of aeolian processes on planets or satellites in the solar system having a dynamic atmosphere and a solid surface are considered, and the relevance of these processes to planetary studies is discussed. Aeolian processes on earth are located principally in arid regions, near shorelines and in the presence of strong slope or thermal winds, and are noted to have produced extensive deposits throughout much of the Phanerozoic. Wind storms on Mars, first suggested in the last century and confirmed by space probe measurements, are connected with abundant features including sand dunes, yardangs, pits and grooves, and variable albedo features, as well as a vast polar sand sea and wind-eroded rocks. In situ measurements on Venus have shown the presence of winds of sufficient velocity to move grains and a supply of particles of the appropriate size. Finally, Voyager 1 radio occultations have shown the presence of a dense, predominantly nitrogen atmosphere on Titan, which, if it is dynamic and if granular particles of solid nitrogen exist on the surface, may be capable of aeolian activity. These observed or possible processes represent a potential for the large- and small-scale modification of planetary surfaces, and may be used in the study of atmospheric dynamics.

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