Computer Science
Scientific paper
Mar 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992icar...96..121s&link_type=abstract
Icarus (ISSN 0019-1035), vol. 96, March 1992, p. 121-128. Research supported by NASA.
Computer Science
88
Light Scattering, Minerals, Particle Size Distribution, Planetary Composition, Powder (Particles), Spectral Bands, Optical Thickness, Porous Materials, Remote Sensing
Scientific paper
The first high-resolution quantitative directional hemispherical reflectance spectra of minerals were obtained for different particle sizes, and were used to develop an accurate prediction of the particles' spectral emissivity, using Kirchhoff's law (Nicodemus, 1965) and to interpret the nature and causes of changes in the spectral contrast of reststrahlen bands. It was found that the reststrahlen bands change in shape as well as intensity; this is explained by the occurrence of substantial volume scattering at fine particle sizes. The implication of this finding for remote sensing of the earth, moon, Mercury, Mars, and the asteroids is discussed.
Salisbury John W.
Wald Andrew
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