Martian rampart crater ejecta - Experiments and analysis of melt-water interaction

Details Martian rampart crater ejecta - Experiments and analysis of melt-water interaction Martian rampart crater ejecta - Experiments and analysis of melt-water interaction

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983icar...56...15w&link_type=abstract

Icarus (ISSN 0019-1035), vol. 56, Oct. 1983, p. 15-37. Research sponsored by the U.S. Department of Energy.

Computer Science

48

Ejecta, Impact Melts, Mars Craters, Meteorite Craters, Trajectory Analysis, Vapor Pressure, Mars Photographs, Meteoritic Damage, Topography, Vaporizing, Viking Orbiter Spacecraft, Mars, Cratering, Rampart Craters, Ejecta, Experiments, Analysis, Melt, Water, Interactions, Impacts, Deposits, Morphology, Comparisons, Flow, Topography, Distribution, Stratigraphy, Emplacement, Explosions, Mass, Vaporization, Hypotheses, Ballistics, Trajectories, Models, Ratios, Pressure, Fragmentation, Energy, Particles, Size, V

Scientific paper

Viking images of Martian craters with rampart-bordered ejecta deposits reveal distinct impact ejecta morphology when compared to that associated with similar-sized craters on the Moon and Mercury. It is suggested that target water explosively vaporized during impact alters initial ballistic trajectories of ejecta and produces surging flow emplacement. The dispersal of particulates during a series of controlled steam explosions generated by interaction of a thermite melt with water has been experimentally modeled. Study of terrestrial, lobate, volcanic ejecta produced by steam-blast explosions reveals that particle size and vapor to clast volume ratio are primary parameters characterizing the emplacement mechanism and deposit morphology.

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