Physics
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993lpi....24.1517w&link_type=abstract
In Lunar and Planetary Inst., Twenty-Fourth Lunar and Planetary Science Conference. Part 3: N-Z p 1517-1518 (SEE N94-20636 05-91
Physics
Degradation, Geomorphology, Lunar Craters, Lunar Evolution, Lunar Orbits, Lunar Soil, Lunar Surface, Thermal Mapping, Apollo 17 Flight, Classifications, Erosion, Infrared Radiometers, Lunar Geology, Meteoritic Damage, Satellite Observation
Scientific paper
Using new software, nighttime thermal maps of the lunar surface have been generated from data obtained by the Apollo 17 Infrared Scanning Radiometer (ISR) in lunar orbit. Most of the thermal anomalies observed in the maps correspond to fresh lunar craters because blocks on the lunar surface maintain a thermal contrast relative to surrounding soil during the lunar night. Craters of Erastosthenian age and older - relatively young by lunar standards - have developed soil covers that make them almost indistinguishable from their surroundings in the thermal data. Thermal images of Copernican age craters show various stages of a degradation process, allowing the craters to be ranked by age. The ISR data should yield insights into lunar surface evolution as well as a more detailed understanding of the bombardment history after formation of the great mare basins.
Mendell Wendell W.
Wieczorek Mark A.
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