The 'soil' of Mars /Viking 1/

Details The 'soil' of Mars /Viking 1/ The 'soil' of Mars /Viking 1/

Oct 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976sci...194...91s&link_type=abstract

Science, vol. 194, Oct. 1, 1976, p. 91-97. NASA-supported research.

Physics

7

Mars Surface Samples, Particulate Sampling, Soil Science, Surface Layers, Viking Lander 1, Dust Collectors, Mars Photographs, Particle Density (Concentration), Particle Size Distribution, Physical Properties, Rocks, Sands, Wind Erosion

Scientific paper

The immediate environs of the Viking 1 lander are described, and the techniques employed to deduce the properties of the two different 'soil' types there are summarized. It is shown that the surface in the immediate vicinity of the lander consists of an area with fine-grained materials ('Sandy Flats') and a rocky area set in a matrix of finer-grained material ('Rocky Flats'). Estimates are given for the bulk density, particle density, particle size distribution, cohesion, angle of internal friction, and penetration resistance of the surface layer in each area. Footpad penetration into the surface layer is discussed, and wind removal of particles is examined. It is concluded that the surface layer of the Viking 1 landing site contains loess, dune sand, lunar nominal soil, lag gravel, and bare rock.

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