Jeffrey J. Plaut

TL;DR: A lower-limit estimate of the global inventory of near surface hydrogen amounts to a global water layer about 14 cm thick if the reservoir sampled from orbit is assumed to be 1 m thick as mentioned in this paper.

TL;DR: For example, a recent analysis of the seasonal variation of the CO{sub 2} frost cover at the north pole has allowed an independent absolute calibration of the three neutron energy bands measured using the Gamma-Ray Spectrometer (GRS) onboard Mars Odyssey as mentioned in this paper.

TL;DR: Data from the northern lowlands of Chryse Planitia have revealed a shallowly buried quasi-circular structure about 250 kilometers in diameter that is interpreted to be an impact basin and a planar reflector associated with the basin structure may indicate the presence of a low-loss deposit that is more than 1 kilometer thick.

TL;DR: In this article, the authors examine the various methods and parameters in common use for quantifying and reporting surface topographic roughness and suggest a method of standardizing the parameters that are computed and reported so that topographic data gathered by different workers using different field techniques can be directly and easily intercompared.

TL;DR: The ice-rich south polar layered deposits of Mars were probed with the Mars Advanced Radar for Subsurface and Ionospheric Sounding on the Mars Express orbiter, suggesting a composition of nearly pure water ice.