Mathematics – Logic
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006dps....38.3020s&link_type=abstract
American Astronomical Society, DPS meeting #38, #30.20; Bulletin of the American Astronomical Society, Vol. 38, p.1298
Mathematics
Logic
Scientific paper
Polar caps of Jupiter’s moon Ganymede are known to be characterized by a thin layer of relative small particles of water ice. An analysis of spectral data acquired by the Near Infrared Mapping Spectrometer during the Galileo mission was conducted in order to study variations of the spectral surface properties at mid-latitudes, where these polar caps become visible in Galileo and Voyager imaging data and influences of incoming radiation from Jupiter’s magnetosphere becomes dominant, in detail. The spectral analysis was performed referring to the abundance and particle size of water ice, the influence of impurities as well as the content of CO2. Additionally, the spectral properties were compared to morphological and geological characteristics as well as the geological age of specific surface features like impact craters using Galileo and Voyager imaging data. Results will be presented that indicate the importance of local influences of polar deposits e.g. the geographic position on Ganymede's surface for the interpretation of specific geologic surface features and their geological history.
Hansen Gary B.
Hibbitts Ch. A.
Jaumann Ralf
Stephan Katrin
Wagner Ralf
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