Characterization of palimpsest craters on Mars

Palimpsest, ghost, or degraded craters have so far been identified on Mercury, the Earth, the Moon, Mars, Ganymede, Callisto, and possibly even Titan. We have identified at least 10 palimpsests on HiRISE image ESP_016526_2415 of Mars and developed an algorithm to automatically characterize these structures on high resolution images. Since the genesis of palimpsests may be related to freeze–thaw cycles these features might have provided habitable environments.