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Geometric interpretation of the ratio of overall diameter to rim crest diameter for lunar and terrestrial craters.An empirical linear relationship has been established by Pike (1967) between the overall diameter and the rim crest diameter for rimmed, flat-floored as well as bowl-shaped, lunar and terrestrial craters formed by impact and explosion. A similar relationship for experimentally formed fluidization craters has been established by Siegal (1971). This relationship is examined in terms of the geometry of the crater and the slope angles of loose materials. The parameter varies from 1.40 to 1.65 and is found to be dependent on mean interior flat floor radius, exterior and interior rim slope angles, angle of aperture of the crater cone, and the volume fraction of crater void accounted for in the rim. The range of the observed parameter can be understood in terms of simple crater geometry by realistic values of the five parameters.
Document ID
Document Type
Reprint (Version printed in journal)
Siegal, B. S.
Wickman, F. E.
(Pennsylvania State University University Park, Pa., United States)
Date Acquired
August 7, 2013
Publication Date
September 10, 1973
Publication Information
Publication: Journal of Geophysical Research
Volume: 78
Subject Category
Space Sciences
Accession Number
Funding Number(s)
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