Questions And Implications Of Surficial OH/H2O On The Moon

Details Questions And Implications Of Surficial OH/H2O On The Moon Questions And Implications Of Surficial OH/H2O On The Moon

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.1801p&link_type=abstract

American Astronomical Society, DPS meeting #42, #18.01; Bulletin of the American Astronomical Society, Vol. 42, p.978

Physics

Scientific paper

Three forms of OH/H2O on the Moon continue to be of great interest to planetary scientists: interior or mantle volatiles, buried polar ice, and widespread surficial deposits or coatings. The first deals with the original geochemical conditions of this rocky body and the differentiation process. The second deals with the unique extremely cold polar environment that is difficult to access. The third (most paradigm shifting) deals with the recently observed OH/H2O that occurs pervasively across the sunlit lunar surface (Clark; Sunshine et al., Pieters et al., Science, 326, 2009). Each of the three forms has sparked active laboratory and theoretical research in order to characterize and measure these properties in greater detail as well as to understand the physics and chemistry involved. A leading hypothesis for the surficial OH/H2O concerns interaction of silicate bodies with particles of the solar wind. Understanding this thin but widespread OH/H2O naturally has important implications for all airless bodies. Current data document that more than one species is involved on the Moon, an OH feature at 2800 nm as well as a stronger longer wavelength feature. The data hint at a compositional and textural affinity, but are inadequate to document the critical time variation distribution and abundance.

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