Top layers charaterization of the Martian surface: Permittivity estimation based on geomorphology analysis

Details Top layers charaterization of the Martian surface: Permittivity estimation based on geomorphology analysis Top layers charaterization of the Martian surface: Permittivity estimation based on geomorphology analysis

Apr 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006p%26ss...54..337n&link_type=abstract

Planetary and Space Science, Volume 54, Issue 4, p. 337-344.

Computer Science

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Mars Express spacecraft inserted successfully Martian orbit at the end of 2003. On board this probe, a radar instrument called MARSIS (for Mars Advanced Radar for Surface and Ionosphere Sounding) is looking for water inside the first kilometers of Martian crust. To support MARSIS planning and data inversion, Laboratoire de Planétologie de Grenoble developed a MARSIS signal simulator. We show in this paper that MARSIS can also characterize some surface features, in addition to subsurface water and ionosphere sounding. We study a Martian surface region of special interest: Nilokeras Mensae, inside Acidalia Planitia. We discuss the previous geological studies of this region, and show the geomorphologies analyze of this surface area could lead to a simple terrain model. Then, we present a possible data inversion scheme and applying the MARSIS simulator, we test a first radar data inversion. Finally, we will show that complete dielectric characteristics of surface top layers can be retrieved, at least as often Mars Express flies over some layered terrain (at wavelength scale).

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