Physics
Scientific paper
Oct 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.9459p&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 89, Oct. 10, 1984, p. 9459-9470. NASA-supported research.
Physics
27
Enceladus, Particles, Planetology, Saturn Rings, Backscattering, Io, Pioneer 11 Space Probe, Planetary Evolution, Spheres, Volcanology, Voyager Project, Saturn, Rings, E Ring, Satellites, Enceladus, Optical Properties, Albedo, Particles, Physical Properties, Infrared, Wavelengths, Scattering, Composition, Origin, Formation, Source, Volcanism, Eruptions, Hypotheses, Structure, Injection, Comparisons
Scientific paper
Photographic imagery from Pioneer and Voyager flyby satellites has been used to study the microphysical properties of Saturn's outermost E-ring, and to determine the physical relationship between the E-ring and the satellite Enceladus. The optical and infrared characteristics of the E-ring are explained in terms of Mie scattering of ice spheres with an effective diameter of 2 to 2.25 microns and an effective variance of 0.1 to 1.5. It is suggested that the E-ring is continuously replenished by volcanic eruptions on Enceladus, and recent tectonic evidence is cited in support of this hypothesis. A number of similarities in the relationship between the E-ring and Enceladus and Io and its torus are discussed, within the framework of a general model of outer solar system volcanism and planetary ring interaction.
Ajello Joseph M.
Pang Kevin D.
Rhoads J. W.
Voge C. C.
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