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Evidence of Ice-Rich Layered Deposits in the Medusae Fossae Formation of Mars

Orosei, Roberto; Plaut, Jeffrey J.; Campbell, Bruce A. +4 more

Subsurface reflectors in radar sounder data from the Mars Advanced Radar for Subsurface and Ionospheric Sounding instrument aboard the Mars Express spacecraft indicate significant dielectric contrasts between layers in the Martian Medusae Fossae Formation (MFF). Large density changes that create dielectric contrasts are less likely in deposits of …

Revising the Basal Permittivity of the South Polar Layered Deposits of Mars With a Surficial Dust Cover

Kofman, W.; Hérique, A.; Grima, C. +1 more

Bright basal reflections from the Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) have been proposed to be consistent with permittivities characteristic of a wet material beneath the south polar layered deposits (SPLD). The characterization of a recently formed impact crater highlight the existence of a several meters thick ice…