Other
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..639p&link_type=abstract
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.639
Other
Scientific paper
We present a detailed study of an Iapetus mosaic of Cassini-VIMS data with high spatial resolution (0.5 x 0.5 ) [5]. We analyze this set of data using a statistical clustering approach to reduce the analysis of a large number of data ( 104 spectra from 0.35 to 5.10 μm) to the study of seven representative groups accounting for 99.6 % of the surface covered by the original sample. We give special attention to the study of the CO2 band. We find that CO2 absorption is widespread over both the bright and dark regions of Iapetus' surface, and probably represents the trapping of carbon dioxide as a clathrate, hydrate, or adsorbate at the molecular level with other materials. The strength of the CO2 band in the areas where both, H2O- and carbon- bearing materials exist, gives support to the hypothesis that this volatile is formed on the surface of Iapetus as a product of irradiation of these two components.
Cruikshank Dale
Dalle Ore Cristina Morea
Marzo Giuseppe A.
Pinilla-Alonso Noemí
Roush Ted L.
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