Photometric analyses for the determination of physical and structural properties for the Martian surface in the Oxia Palus region

Details Photometric analyses for the determination of physical and structural properties for the Martian surface in the Oxia Palus region Photometric analyses for the determination of physical and structural properties for the Martian surface in the Oxia Palus region

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990phdt.........1r&link_type=abstract

Ph.D. Thesis - Ludwig-Maximilians-Univ. Deutsche Forschungsanstalt für Luft- und Raumfahrt, Oberpfaffenhofen (Germany, F.R.). Ab

Mathematics

Logic

Mars Surface, Measurement, Photometry, Planetary Composition, Surface Properties, Albedo, Anisotropy, Imagery, Models, Sunlight, Thematic Mapping, Viking Orbiter Spacecraft

Scientific paper

The primary goal is to derive information concerning the physical and structural characteristics of the Martian surface, from measurements of the anisotropy of the diffusely reflected sunlight on the basis of digital Viking orbiter images. The contribution of light scattered on atmospheric dust particles can be identified, calculated and separated from the surface information by using a combined surface atmosphere model, which approximates the reflection behavior of rough surfaces over a wide range of phase angles very accurately and whose parameters can be interpreted in a geologically meaningful sense. The application of this model to phase curves measured in two visible spectral bands gives insight into the mean particle albedo, the state of compaction, and the macroscopic roughness of the surface material as well as into the wavelength dependence of these photometrically derived surface parameters. A pixel by pixel classification results in the development of thematic maps.

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