Mathematics – Logic
Scientific paper
Nov 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979m%26p....21..319t&link_type=abstract
Moon and the Planets, Nov. 1979, p. 319-342.
Mathematics
Logic
12
Cratering, Lunar Craters, Lunar Maria, Regolith, Selenography, Anomalies, Apollo Spacecraft, Infrared Photography, Lunar Rocks, Lunar Surface, Photogeology, Radar Signatures, Satellite-Borne Photography, Terrain
Scientific paper
Radar, IR, and photogeologic properties of some 1310 lunar craters that have been catalogued as radar or IR anomalies, or both, are studied to determine whether a systematic difference in blocky craters exists between the lunar maria and terrae and whether this difference might be caused by a deep magaregolith of pulverized material forming the terra surface. Examination of Apollo orbital photography confirms that the radar and IR anomalies are correlated with blocky rubble around the craters, and analysis of the radar and IR data indicates systematic terra-mare differences. The data are interpreted by postulating that the maria are rock layers where craters eject boulder fields, that the terrae are covered by a relatively pulverized megaregolith at least 2 km deep, and that the terra craters eject less rocky rubble. It is concluded that blocky rubble, in the form of either actual rocks or partly consolidated blocks, contributes to the radar and IR signatures of the craters.
Hartmann William K.
Roberts James W.
Shorthill Richard W.
Thompson William T.
Zisk Stan H.
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