The two faces of Titan's dunes Options

[ngunn]

ESA press release today: http://www.esa.int/esaCP/SEMX5NH8RXG_index_0.html

[ngunn]

No comments? OK I'll post one. This is a fact-reporting article (observations, correlations) and at that it succeeds perfectly. It offers a tentative tying up of a number of loose ends. To me that's less convincing because we don't have all the ends yet so tying ends up now may mean making wrong connections. Lots of questions beckon, as always with Titan. If the dune material descends from the hydrocarbon haze this presumably happens at all latitudes, so what happens to it north and south of the tropical dune zone?

[titanicrivers]

... Lots of questions beckon, as always with Titan. If the dune material descends from the hydrocarbon haze this presumably happens at all latitudes, so what happens to it north and south of the tropical dune zone ...

and of course in the Xanadu region which lies WITHIN the tropical zone at a LOWER elevation than the surrounding dune seas and presumably is OLDER geologically than the dune fields!