Is the Martian water table hidden from radar view?

Details Is the Martian water table hidden from radar view? Is the Martian water table hidden from radar view?

Aug 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3615206f&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 15, CiteID L15206

Computer Science

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Geochemistry: Composition Of The Moon, Geochemistry: Composition Of The Moon, Geochemistry: Composition Of The Moon, Geochemistry: Composition Of The Moon

Scientific paper

Mars may possess a global sub-surface groundwater table as an integral part of its current hydrological system. However, the Mars Advanced Radar for Subsurface and Ionospheric Sounding (MARSIS) onboard the Mars Express (MEx) spacecraft has yet to make a definitive detection of such a body of liquid water. In this work, we quantify the conditions that would allow a detection of a deep aquifer and demonstrate that the lack of radar detection does not uniquely rule out the presence of such a body. Specifically, if the overlying crustal material has a conductivity above ˜10-5 S/m (equivalent to a loss tanget of 0.008), a radar echo from an aquifer could be sufficiently attenuated by the intervening medium to prevent its detection by MARSIS. As such, the lack of direct detection by MARSIS-a “null result”-does not rule out the possibility of the water table's existence.

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