Fine particles on Mars - Observations with the Viking 1 lander cameras

Details Fine particles on Mars - Observations with the Viking 1 lander cameras Fine particles on Mars - Observations with the Viking 1 lander cameras

Oct 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976sci...194...87m&link_type=abstract

Science, vol. 194, Oct. 1, 1976, p. 87-91. NASA-supported research.

Mathematics

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4

Mars Photographs, Mars Surface, Particle Size Distribution, Sediment Transport, Viking Lander 1, Atmospheric Composition, Drift, Dust Storms, Photogrammetry, Photographic Recording, Photomapping, Sediments, Wind Erosion

Scientific paper

Drifts of fine-grained sediment are present in the vicinity of the Viking 1 lander. Many drifts occur in the lees of large boulders. Morphologic analysis indicates that the last dynamic event was one of general deflation for at least some drifts. Particle cohesion implies that there is a distinct small-particle upturn in the threshold velocity-particle size curve; the apparent absence of the most easily moved particles (150 micrometers in diameter) may be due to their preferential transport to other regions or their preferential collisional destruction. A twilight rescan with lander cameras indicates a substantial amount of red dust with mean radius on the order of 1 micrometer in the atmosphere.

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