Radar measurement of small-scale surface texture - Syrtis Major

Details Radar measurement of small-scale surface texture - Syrtis Major Radar measurement of small-scale surface texture - Syrtis Major

Feb 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982icar...49..258s&link_type=abstract

Icarus, vol. 49, Feb. 1982, p. 258-283.

Astronomy and Astrophysics

Astronomy

24

Mars Surface, Planetary Geology, Planetology, Radar Astronomy, Radar Measurement, Surface Roughness, Doppler Radar, Infrared Imagery, Lunar Craters, Lunar Surface, Mars Craters, Mars Probes, Mars Volcanoes, Multistatic Radar, Planetary Evolution, Radar Echoes, Structural Basins, Thermal Mapping, Wind Effects, Mars, Radar Observations, Surface, Texture, Syrtis Major, Wavelengths, Centimeter Waves, Reflectivity, Viking, Imagery, Infrared, Bolometry, Optical Properties, Lavas, Eolian Effects, Formation, Scatte

Scientific paper

Available data on Syrtis Major is examined and compared in light of lunar experience in order to infer the small-scale structure and study the problem of origin and present state. The radar data are reviewed, introducing three previously unpublished sets of observations obtained during the 1978 Mars opposition. Syrtis Major is shown to be smooth and relatively homogeneous when sensed at centimeter wavelengths, root mean square surface slopes ranging from more than 1.5-2.0 deg in the east to less than 0.5 deg along the western margin at wavelength 12.6 cm. Radar reflectivity increases from about 5% to about 12% across Syrtis Major, being greatest near the western margin. A self-consistent model for the surface of Syrtis Major is arrived at which includes structure on all scales. It is shown that the moon is not a good radar analog for Syrtis Major.

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