Cassini ISS Observations of Titan's Trailing Hemisphere

Details Cassini ISS Observations of Titan's Trailing Hemisphere Cassini ISS Observations of Titan's Trailing Hemisphere

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007dps....39.4404p&link_type=abstract

American Astronomical Society, DPS meeting #39, #44.04; Bulletin of the American Astronomical Society, Vol. 39, p.500

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During nine encounters in the first half of 2007, Cassini's Imaging Science Sub-system (ISS) observed Titan's trailing hemisphere between 180 and 270 West, focusing on the region around and to the north of Adiri. The images reveal a number of terrain types seen in other regions on Titan, including dark equatorial terrain, some of which was determined by RADAR to be covered in longitudinal sand dunes (Lorenz et al. 2006). High-resolution observations from June revealed dunes in ISS images for the first time. The lack of prior detections is likely due to low albedo contrast between the dunes and interdune areas. Observations from February and March 2007 revealed several dark lineaments near 45 N, 240 W. These features are likely tectonic in origin, but their proximity to a large polar sea discovered by RADAR and ISS in February suggest a possible connection to fluvial or lacustrine processes. ISS observations of this region reveal only three candidate impact craters, further evidence of Titan's youthful surface. One of these candidates ( 7 N, 199 W) strongly resembles Sinlap, one of the handful of confirmed impact craters on Titan (Lorenz et al. 2007).
References: Lorenz, R. et al. 2006. Science 312, pp. 724-727; Lorenz, R. et al. 2007. Geophys. Res. Lett. 34, L07204.

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