Mathematics – Logic
Scientific paper
Jan 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994sosyr..27..310s&link_type=abstract
Solar System Research, Vol. 27, No. 4, p. 310 - 321
Mathematics
Logic
2
Moon Soil: Remote Sensing
Scientific paper
Analysis of laboratory test of lunar soil samples and telescopic observations indicates that a spectropolarization ratio of the type PmaxB/PmaxR for blue and red spectral regions can be used as a remote parameter of lunar oil maturity. It closely correlates to the maturity index derived from morphological or ferromagnetic estimates of the exposure age. According to this parameter the maturity index for soil in the Reiner-γ region is equal to 0.315, which is characteristic of substances in their early stages of cosmogonic transformation. Spectral photographs of Reiner-γ were obtained using a 2-m telescope at the Pic du Midi Observatory (France) for ten selected narrow-band intervals (from 0.4 to 1.05 μm) with a high spatial resolution (0.2 km/pixel). These images were used for detailed analysis of this large area of immature soil. They suggest that a large portion of this albedo anomaly is covered with a substance containing no more than 28% of agglutinates. For a model effective grain size of the fine fraction at 40 μm, the grain size for the least mature material was computed to be in the range 400 - 500 μm, with the mean value for the entire formation being in the range 120 - 150 μm. The exposure age of immature soils in the Reiner-γ formation was estimated to be around 10×106yrs.
Chevrel Serge
Pinet Patrick
Shevchenko Valentin
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