Mars impact ejecta in the regolith of Phobos : Bulk concentration and distribution

@inproceedings{Ramsley2013MarsIE,
  title={Mars impact ejecta in the regolith of Phobos : Bulk concentration and distribution},
  author={Kenneth R. Ramsley and James W. Head},
  year={2013}
}
The gravity of Mars and the observation of a thick Phobos regolith suggest that nearly all Phobos ejecta returns to Phobos and re-impacts on Phobos. Primary ejecta from Mars typically impacts Phobos at velocities of 2–3 km/s and due to the low escape velocity from Phobos of 4–10 m/s, 95–99% of the secondary ejecta from Phobos is inserted into temporary orbits around Mars. Most Phobos ejecta fragments remain trapped in orbits around Mars for several days to several hundred years until they re… CONTINUE READING
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