The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B4. Beijing 2008 
Saturnian system. These data provide information otherwise 
unattainable regarding the properties of the icy outer layers (esp. 
Europa and Io), discrimination between competing hypotheses 
of geologic origins (on Triton, Ganymede, Europa, and 
Enceladus for example), and in some cases the thermal histories 
of these bodies (esp. Ganymede and Dione). The morphology 
and topography of impact craters, volcanoes, faults, and other 
geologic features and province serve as probes into the interiors 
of these bodies. These data are available on request for use in 
mapping and modelling of geologic and geophysical processes. 
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ACKNOWLEDGEMENTS 
The work described here was completed while the author was a 
resident at the Lunar and Planetary Institute in Houston Texas, 
beginning in 1991. The author is most grateful for computing 
and graphic assistance during those years. Support was 
provided by the Neptune, Jupiter System, and Cassini Data 
Analyses Programs and by the Planetary Geology and 
geophysics Programs, NASA. 
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