Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012hell.confq..13s&link_type=abstract
10th Hellenic Astronomical Conference, Proceedings of the conference held at Ioannina, Greece, 5-8 September 2011. Edited by Io
Astronomy and Astrophysics
Astronomy
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. The determination of Titan's surface chemical composition is critical in order to unveil its geology and investigate the interactions between the interior, the surface and the atmosphere. Cassini/VIMS acquired a large amount of spectra and images taken within the narrow methane spectral windows centered at 0.93, 1.08, 1.27, 1.59, 2.03, 2.8 and 5 μm. However, the surficial imaging is still ambiguous due to haze scattering and particle absorption and needs to be clearly defined. We combine here Principal Component Analysis and "atmosphere subtraction", 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 within these three cryovolcanic candidate areas.
No associations
LandOfFree
Potentially active regions on Titan: Application of PCA to Cassini/VIMS data and atmospheric subtraction does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Potentially active regions on Titan: Application of PCA to Cassini/VIMS data and atmospheric subtraction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Potentially active regions on Titan: Application of PCA to Cassini/VIMS data and atmospheric subtraction will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-911110