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Shoreline On Titan: Best Evidence Yet |
  Sep 17 2005, 12:28 PM
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#1
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 Junior Member  Group: Members Posts: 48 Joined: 11-August 05 Member No.: 463  |
Best evidence yet
*...for a shoreline on Titan; they're calling it "dramatic." Area measures 1,060 by 106 miles. Is from Cassini radar, obtained during the latest flyby. Speculation continues regarding seepage of liquid from the ground/ground springs and/or rainfall. |
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Sep 18 2005, 05:43 PM
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#2
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 Member Group: Members Posts: 809 Joined: 11-March 04 Member No.: 56 |
I don't really know that much about the science of shorelines (and particularly not on alien worlds), but it seems to me that you would get very different results from permanent, even if shallow, lakes and seas, on the one hand, and mud flats on the other. The difference is, I think, wave action, which erodes sediment into grains, shapes shorelines into smooth shapes, creates spits, headlands, and islands. If rainfall on Titan is absorbed quickly into the ground and does not pool for long enough for waves to shape the surface, I don't see how you could have any "shoreline", estuaries, or littoral features. You could get them if you have an intermittent presence of liquid (say tides), but I don't see how they could arise from merely sporadic downpours and flash floods. Perhaps someone who knows more about the hydrography of shorelines could comment on what the images from Titan suggest.
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Palomar Shoreline On Titan: Best Evidence Yet Sep 17 2005, 12:28 PM
David How does this square with previous assertions that... Sep 17 2005, 01:09 PM 4th rock from the sun The liquids aren't there now, but they were pr... Sep 17 2005, 02:37 PM Jyril Dark area on the radar image suggests the ground m... Sep 17 2005, 05:19 PM
Cugel QUOTE (Jyril @ Sep 17 2005, 05:19 PM)Also, ra... Sep 18 2005, 12:20 AM BruceMoomaw The solution to the apparent contradiction seems t... Sep 17 2005, 07:00 PM JRehling QUOTE (BruceMoomaw @ Sep 17 2005, 12:00 PM)Th... Sep 18 2005, 06:22 AM imran QUOTE (JRehling @ Sep 18 2005, 06:22 AM)The t... Sep 18 2005, 06:58 AM Richard Trigaux A strong argument in favour of rare but heavy rain... Sep 18 2005, 07:17 AM DFinfrock [COLOR=blue]As Bruce MoomMaw wrote in Post #10:
... Sep 20 2005, 02:34 AM Richard Trigaux QUOTE (DFinfrock @ Sep 20 2005, 02:34 AM)This... Sep 20 2005, 07:13 AM BruceMoomaw The picture which is now forming pretty clearly of... Sep 18 2005, 10:31 AM BruceMoomaw I've just found an article by Lorenz in the Ja... Sep 18 2005, 10:43 AM BruceMoomaw Now, I HAVE found a clear reference to the fact th... Sep 18 2005, 10:50 AM Richard Trigaux Thanks BruceMoomaw for the interesting discution a... Sep 18 2005, 07:38 PM scalbers Haven't had a chance to do this yet with these... Sep 18 2005, 04:33 PM Richard Trigaux QUOTE (David @ Sep 18 2005, 05:43 PM)I don... Sep 18 2005, 07:08 PM Bob Shaw QUOTE (Richard Trigaux @ Sep 18 2005, 08:08 P... Sep 18 2005, 07:39 PM Richard Trigaux QUOTE (Bob Shaw @ Sep 18 2005, 07:39 PM)Richa... Sep 18 2005, 08:04 PM BruceMoomaw David: Nobody is saying that the methane rain that... Sep 18 2005, 10:22 PM Richard Trigaux QUOTE (BruceMoomaw @ Sep 18 2005, 10:22 PM)Bu... Sep 20 2005, 07:32 AM BruceMoomaw Yes, but in those situations water seeps into the ... Sep 20 2005, 11:31 AM Richard Trigaux QUOTE (BruceMoomaw @ Sep 20 2005, 11:31 AM)Ye... Sep 20 2005, 01:10 PM BruceMoomaw Actually, I believe you're right -- on thinkin... Sep 20 2005, 03:05 PM JRehling QUOTE (BruceMoomaw @ Sep 20 2005, 08:05 AM)Bu... Sep 20 2005, 04:37 PM Bob Shaw QUOTE (JRehling @ Sep 20 2005, 05:37 PM)Assum... Sep 20 2005, 04:48 PM BruceMoomaw Note also that one of the most recent Cassini rada... Sep 20 2005, 03:12 PM BruceMoomaw Robert Mitchell has recently told me flatly that i... Sep 20 2005, 05:19 PM exoplanet Has anyone put forward a theory that some sort of ... Sep 20 2005, 06:43 PM The Messenger QUOTE (exoplanet @ Sep 20 2005, 11:43 AM)...
... Nov 1 2005, 04:59 PM imran Just an article I found interesting.
Rivers on Ti... Dec 6 2005, 06:29 AM Richard Trigaux QUOTE (imran @ Dec 6 2005, 06:29 AM)Just an a... Dec 6 2005, 07:22 AM JRehling QUOTE (Richard Trigaux @ Dec 5 2005, 11:22 PM... Dec 7 2005, 10:03 AM Richard Trigaux QUOTE (JRehling @ Dec 7 2005, 10:03 AM)I thin... Dec 8 2005, 08:38 AM ljk4-1 The lighting levels are about right, supposedly Hu... Feb 17 2006, 03:21 PM JRehling QUOTE (Richard Trigaux @ Dec 8 2005, 12:3... Feb 17 2006, 05:31 PM stevesliva From what elevation is that? Is the convex appear... Feb 20 2006, 08:31 PM BruceMoomaw Not necessarily. First, the only spring channels ... Sep 20 2005, 11:52 PM exoplanet Dear Bruce,
I honestly respect you opinion but I ... Sep 21 2005, 02:58 AM BruceMoomaw "Titan rain should not have much force as it ... Sep 21 2005, 03:52 AM exoplanet "Bar-Nun's lab simulations had indicated ... Sep 21 2005, 04:36 AM BruceMoomaw In chronological order:
(2001) http://copernicus... Sep 21 2005, 11:41 PM BruceMoomaw It isn't that the dark stuff falls out of the ... Dec 7 2005, 07:47 AM Richard Trigaux QUOTE (BruceMoomaw @ Dec 7 2005, 07:47 AM)It ... Dec 7 2005, 08:45 AM BruceMoomaw QUOTE (Richard Trigaux @ Dec 7 2005, 08:45 AM... Dec 7 2005, 02:02 PM BruceMoomaw From Ralph Lorenz's very short abstract ... Mar 27 2006, 06:24 AM |
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