Mathematics – Logic
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufm.p51e1169p&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #P51E-1169
Mathematics
Logic
[5455] Planetary Sciences: Solid Surface Planets / Origin And Evolution, [5464] Planetary Sciences: Solid Surface Planets / Remote Sensing
Scientific paper
Ganymede is a planet-sized world, the solar system’s largest satellite with a radius of 2631 km. Its physiography, geology, geophysics, surface composition, and evolution are correspondingly planet-like in intricacy. We have completed a global geological map of Ganymede that represents the most recent understanding of the satellite on the basis of Galileo mission results. This contribution builds on important previous accomplishments in the study of Ganymede utilizing Voyager data and incorporates the many new discoveries that were brought about by examination of Galileo data. Material units have been defined, structural landforms have been identified, and an approximate stratigraphy has been determined utilizing a global mosaic of the surface with a nominal resolution of 1 km/pixel assembled by the USGS. This mosaic incorporates the best available Voyager and Galileo regional coverage and high resolution imagery (100-200 m/pixel) of characteristic features and terrain types obtained by the Galileo spacecraft. This effort has provided a more complete understanding of: 1) the major geological processes operating on Ganymede, 2) the characteristics of the geological units making up its surface, 3) the stratigraphic relationships of geological units and structures, and 4) the geological history inferred from these relationships.
Collins Geoffrey C.
Head James W.
Lucchitta Baerbel Koesters
Pappalardo Robert T.
Patterson Garth
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