Crater lakes on Titan: Rings, horseshoes and bullseyes

Details Crater lakes on Titan: Rings, horseshoes and bullseyes Crater lakes on Titan: Rings, horseshoes and bullseyes

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994p%26ss...42....1l&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 42, no. 1, p. 1-4

Physics

16

Craters, Ethane, Ice, Lakes, Satellite Surfaces, Titan, Liquids, Photochemical Reactions, Planetary Evolution, Saturn (Planet), Shapes

Scientific paper

Recent observations indicate that Titan has a predominantly icy surface, although photochemical models suggest that substantial amounts of liquid hydrocarbons may exist near or on the surface: the most plausible model of Titan's surface therefore is an icy one, with lakes or small seas of hydrocarbons (principally ethane), many in impact craters. Medium-sized craters will have central peaks, while large craters may undergo viscous relaxation, their centers doming upwards, to push the liquids into an annulus, thereby forming a ring lake. Additionally, craters with central pits may form `bullseye' lakes. The large tidal effects of Saturn on such lakes will affect their shape, distorting rings into horseshoes, and may also cause erosive migration.

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