Computer Science
Scientific paper
Nov 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977moon...17..233r&link_type=abstract
The Moon, vol. 17, Nov. 1977, p. 233-257.
Computer Science
4
Asteroids, Impact Damage, Meteorite Collisions, Micrometeorites, Planetary Surfaces, Topography, Computer Programs, Computerized Simulation, Deposition, Erosion, Fortran, Mercury (Planet), Meteorite Craters, Moon
Scientific paper
A theoretical model of the evolution of a topographic feature on an airless body is presented in which each point on the surface is subjected to: (1) erosion caused by micrometeorite impact and ejection of material away from the feature and (2) sedimentation occurring when a micrometeorite hits a nearby point and ejects material to the feature. In order to develop a computer program for numerical application of the model, the solid angle of vision of the sky is determined along with the rates of erosion and sedimentation. Conditions are specified under which erosion equals sedimentation, erosion exceeds sedimentation, and sedimentation exceeds erosion. The program is tested by application to artificial topographic features consisting of a flat plain, a pyramid, a rimmed round-bottomed crater, a nonrimmed round-bottomed crater, a rimmed flat-bottomed crater, a rimmed round-bottomed crater with a central peak, and a rimmed flat-bottomed crater with a central peak. Qualitative changes observed in these features under each of the specified conditions are described and intercompared.
Furlong R. B.
Ronca Luciano B.
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