Soil texture and granulometry at the surface of Mars

Details Soil texture and granulometry at the surface of Mars Soil texture and granulometry at the surface of Mars

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.3413d&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. E2, p. 3413-3429.

Mathematics

Logic

13

Grain Size, Mars Surface, Planetology, Soils, Textures, Astronomical Polarimetry, Dust Storms, Mars, Soil, Texture, Surface, Physical Properties, Origin, Formation, Parameters, Spacecraft Observations, Mars 5 Mission, Vpm Instrument, Grains, Size, Compaction, Viking Missions, Irtm Instrument, Particles, Photopolarimetry, Radiometry, Erythraeum, Mare, Thaumsia, Subsurface, Terrian, Albedo, Polarization, Composition, Analogs, Ogygis Rupes, Inertia, Lampland, Dust, Storms

Scientific paper

Attention is given to a characterization of the physical behavior of the Martian upper surface in its first few decimeters on the basis of mutual relationships between three parameters: the linear polarization of the reflected light, the visual albedo, and the thermal inertia. Polarimetric scans raked a strip covering two contrasting regions, the dark-hued Mare Erythraeum, and the light-hued Thaumasia. Erythraeum is characterized everywhere by a uniform polarization response, despite the large geomorphological diversity of the surface. A ubiquitous coating or mantling with small dark grains of albedo 12.7 percent, with a radius of 10 to 20 microns, is indicated. Thaumasia exhibits a large variety of soil properties. A typical location with albedo of 16.3 percent has a surface covered with orange grains, probably very dispersed in size, for which the largest grains are 20 to 40 microns.

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