Physics
Scientific paper
Dec 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996icar..124..490b&link_type=abstract
Icarus, Volume 124, Issue 2, pp. 490-499.
Physics
42
Scientific paper
The Clementine mission to the Moon in 1994 provided the first multispectral observations of the lunar opposition surge below a few degrees. The brightness of the Moon increases more than 40% between solar phase angles of 4 deg and 0 deg. The opposition effect exhibits a small wavelength dependence: the surge is ~3-4% larger at 0.41 μm than at 1.00 mum. This result suggests that the principal cause of the lunar opposition surge is shadow hiding, while coherent backscatter, if present, makes only a minor contribution. The amplitude of the effect depends significantly on terrain: the surge is about 10% greater in the lunar highlands. This difference is attributed to textural variations between the two terrains. The Clementine measurements provide a new basis for deriving spectral geometric albedos, phase integrals, and Bond albedos. A value of 0.11 +/- 0.01 was found for the lunar bolometric Bond albedo. This value is at the low end of the historical published values, but not as low as the recent result of 0.080 +/- 0.002.
Buratti Bonnie Jean
Hillier John Kenneth
Wang Michael
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