Physics
Scientific paper
Jan 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979sci...203...45s&link_type=abstract
Science, vol. 203, Jan. 5, 1979, p. 45, 46.
Physics
1
Mars Surface, Permittivity, Radar Measurement, Surface Roughness, Viking Mars Program, Brewster Angle, Circular Polarization, Data Reduction, Ground Tracks, Normal Density Functions, Parabolic Antennas, Power Spectra, Radar Echoes, Spacecraft Antennas, Viking Orbiter Spacecraft, Reduction, Surface, Viking Orbiter, Radar, Roughness, Observations, Mars, Hellas, Electronmagnetic Properties, Spectrum, Craters, Martian, Basins
Scientific paper
Preliminary reduction of Viking bistatic radar data gives root-mean-square surface slopes in the Hellas basin on Mars of about 4 deg on horizontal scales averaged over 10 centimeters to 100 meters. This roughness decreases slightly with position along the ground track, south to north. The dielectric constant in this area appears to be approximately 3.1, greater than the Martian average. These values are characteristic of lunar maria and are similar to those found near the Viking Lander site in Chryse with the use of earth-based radar.
Brenkle J. P.
Simpson Richard A.
Sue M.
Tyler Leonard G.
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