Physics
Scientific paper
Mar 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92..561h&link_type=abstract
(Lunar and Planetary Institute, NASA, AAS, et al., Lunar and Planetary Science Conference, 17th, Houston, TX, Mar. 17-21, 1986)
Physics
12
Ejecta, Mars Craters, Mars Surface, Terrain Analysis, Elevation, Morphology, Plains, Ridges, Thickness
Scientific paper
Relationships between the distribution of Martian crater ejecta morphologies and both elevation and ridged plains thicknesses have been investigated. The authors observed a slight correlation between elevation and the distribution of ejecta types for the ridged plains, but not for regions of the dissected cratered plateau unit. A stronger correlation was identified between the thicknesses of Lunae and Hesperia Plana - two major occurrences of the ridged plains - and the complexity of ejecta morphologies. For a given crater size range, the complexity of the ejecta increases with decreasing thicknesses of the ridged plains. Because more of the lower unit is excavated where the upper layer is thin, the authors conclude that some property of the lower layer increases ejecta complexity. Explanations of these findings are discussed in detail.
Greeley Ronald
Horner V. M.
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