Physics – Geophysics
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pggp.rept..285h&link_type=abstract
In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1990 p 285-287 (SEE N92-10728 01-91)
Physics
Geophysics
Anomalies, Backscattering, Forward Scattering, Photometry, Regolith, Terrain, Albedo, Chemical Composition, Maps, Particles, Phase Shift
Scientific paper
Researchers report here the discovery of an isolated region of anomalously forward scattering materials on the surface of Triton. The researchers' best-fit Hapke parameters indicate that regolith particles in the anomalous scattering region are not only less backward scattering, but also slightly lower in single scattering albedo than average materials on Triton's surface. While it might be possible to account for such differences in terms of differences in particle size and transparency, it is also possible that the anomalous region is compositionally distinct from other terrains. It is noteworthy that, for the anomalous region, there exists a distinctively strong spatial correlation between the photometric ratios at different phase angles, and that, relative to other terrains, the anomalous region reddens at a different rate with increasing phase angle.
Helfenstein Paul
Lee Pascal
McCarthy Derek
Veverka Joseph
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