Potentially active regions on Titan: Application of PCA to Cassini/VIMS data and atmospheric subtraction

Details Potentially active regions on Titan: Application of PCA to Cassini/VIMS data and atmospheric subtraction Potentially active regions on Titan: Application of PCA to Cassini/VIMS data and atmospheric subtraction

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..467s&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.467

Computer Science

Scientific paper

We present a study of Titan's geology with a view to enhance our current understanding of the satellite's potentially active zones. We combine here Principal Component Analysis and "atmosphere substraction" [1;2], as a prelude to "differential spectroscopy" on three potentially active regions on Titan, namely Tui Regio, Hotei Regio, and Sotra Facula. With the statistical method of Principal Component Analysis, we have managed to isolate specific regions of interest of distinct spectral behaviours and hence of diverse chemical composition; then, by means of atmospheric subtraction, we have reduced the effect of the contribution of the atmosphere within the atmospheric methane windows, to better focus on the real alterations in surface composition, by comparing the spectral behaviours of these regions. We present some suggestions for the chemical composition and the correlation with the morphotectonic features [3] within these three cryovolcanic candidate areas.

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