Physics – Geophysics
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pggp.rept..261c&link_type=abstract
In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1986 p 261-263 (SEE N87-23341 16-91)
Physics
Geophysics
Dust, High Resolution, Infrared Imagery, Mars Surface, Planetary Geology, Sediments, Thermal Mapping, Valleys, Wind Effects, Albedo, Geomorphology, Remote Sensing, Sediment Transport, Viking Orbiter Spacecraft
Scientific paper
Viking Infrared Thermal Mapper (IRTM) high resolution (2 to 5 km) data were compiled and compared to Viking Visual Imaging Subsystem (VIS) data and available 1:5M geologic maps for several Martian channels including Dao, Harmakhis, Mangala, Shalbatana, and Simud Valles in an effort to determine the surface characteristics and the processes active during and after the formation of these channels. Results show a dominance of aeolian processes active in and around the channels. These processes have left materials thick enough to mask any genuine channel deposits. Results also indicate that very comparable Martian channels and their surrounding terrain are blanketed by deposits which are homogeneous in their thermal inertia values. However, optimum IRTM data does not cover the entire Martian surface and because local deposits of high thermal inertia material may not be large enough in areal extent or may be in an unfavorable location on the planet, a high resolution data track may not always occur over these deposits. Therefore, aeolian processes may be even more active than the IRTM data tracts can always show.
Christensen Per Rex
Craddock Robert A.
Greeley Ronald
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