Physics
Scientific paper
Jul 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977phdt.........4k&link_type=abstract
"Ph.D. Thesis - Ruprecht Karl Univ. SCITRAN, Inc., Santa Barbara, CA. Transl. into ENGLISH of the book "Untersuch. von Primaren
Physics
2
Impact Damage, Lunar Craters, Measuring Instruments, Particle Size Distribution, Selenology, Apollo Project, Approximation, Data Reduction, Geochronology, Lunar Orbiter, Spaceborne Photography
Scientific paper
Young lunar impact structures were investigated by using lunar orbiter, Apollo Metric and panorama photographs. Measurements on particularly homogeneous areas low in secondary craters made possible an expansion of primary crater distribution to small diameters. This is now sure for a range between 20m or = D or = 20km and this indicates that the size and velocity distribution of the impacting bodies in the last 3 billion years has been constant. A numerical approximation in the form of a 7th degree polynomial was obtained for the distribution.
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