NASA NTRS · 19730023960
Variable features on Mars 2: Mariner 9 global results
Abstract
Mariner 9 observations of time variable Martian dark areas and semi-tone areas are commonly resolved into streaks and splotches caused by sand storm particles. Bright streaks are formed by the smaller particles and require exceptionally high velocities for their formation as compared with the more easily saltated larger particles in dark streak areas.
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Sagan, C., Veverka, J., Fox, P., Dubisch, R., French, R., Gierasch, P., Quam, L., Lederberg, J., Levinthal, E., Tucker, R.. 1973-07-15. Variable features on Mars 2: Mariner 9 global results. https://ntrs.nasa.gov/citations/19730023960
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