Frost spectra: Comparison with Jupiter's Satellites |
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| Authors: | Hugh H Kieffer WD Smythe |
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| Institution: | Department of Planetary and Space Science, University of California Los Angeles, California 90024, USA |
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| Abstract: | The near infrared spectral reflectance of pure CH4, CO2, H2O, H2S, NH3 and NH4SH frosts has been measured. Comparison with recent Galilean satellite spectra indicates that H2O at approximately 150°K and with about 0.01 cm grain size is the major component on the surface of JII (Europa) and JIII (Ganymede); upper limits for the remaining frosts range from 5 to 28%. Materials other than these frosts must be present on the surface of JI (Io) and JIV (Callisto). |
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