New Titan paper on Jason B's website |
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New Titan paper on Jason B's website |
 Jul 6 2010, 08:01 PM
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#1
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 Senior Member  Group: Members Posts: 2934 Joined: 4-November 05 From: North Wales Member No.: 542  |
Looks like lots of interesting stuff here:
http://barnesos.net/publications/papers/20...carus.Gmode.pdf |
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Jul 28 2010, 06:35 AM
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#2
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 Member Group: Members Posts: 119 Joined: 30-August 06 From: Moscow, ID Member No.: 1086 |
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Aug 25 2011, 07:30 PM
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#3
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Senior Member Group: Members Posts: 2934 Joined: 4-November 05 From: North Wales Member No.: 542 |
Another just posted - on Xanadu this time. Thanks as always Jason.
http://barnesos.net/publications/papers/20...nadu.Crater.pdf |
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Aug 25 2011, 08:25 PM
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#4
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 Senior Member Group: Moderator Posts: 2818 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
I'll be honest, I'm skeptical of this idea, though I am always happy to see people willing to go out on a limb and publish stuff on Titan geology.
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Aug 27 2011, 02:32 AM
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#5
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 Member Group: Members Posts: 395 Joined: 23-February 07 From: Occasionally in Columbia, MD Member No.: 1764 |
QUOTE (volcanopele @ Aug 25 2011, 04:25 PM)  I'll be honest, I'm skeptical of this idea, . You are not alone |
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Sep 1 2011, 02:38 AM
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#6
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Member Group: Members Posts: 398 Joined: 18-November 08 Member No.: 4489 |
QUOTE I'll be honest, I'm skeptical of this idea, I am a bit more giving on the idea a few things roundish features do tend to be impacts ( not all ) The brain LIKES to see patterns in the noise .It is hard wired TO SEE THEM . so ???? it might be but it also might not be . But given the long term weathering ( look at the Yucatán impact basin ) from the air you would NEVER see it . So it might be... |
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Sep 22 2011, 03:39 PM
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#7
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Senior Member Group: Members Posts: 2934 Joined: 4-November 05 From: North Wales Member No.: 542 |
And another one: http://barnesos.net/publications/papers/20...nter.Spring.pdf
Titan fans here may remember an earlier discussion we had about why Xanadu seems to act as a barrier to the eastward migration of Titan's dunes, and the possibility of a peculiar wind regime being responsible. Well it now appears that Xanadu is also a cloud avoidance zone. Read all about it in section 4.2.3 Special Case of Xanadu 
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Sep 22 2011, 05:00 PM
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#8
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Senior Member Group: Moderator Posts: 2818 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
EDIT: Sorry, this is what I get for reacting to a post and not reading the paper. I assumed they were talk about clouds OVER Xanadu, not mid-latitude clouds avoiding Xanadu longitudes. I still wonder if that is due to sample bias, since VIMS takes data mostly during flybys, and we don't have much close up data over Xanadu that would be good for cloud tracking.
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Sep 22 2011, 05:36 PM
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#9
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Senior Member Group: Members Posts: 1101 Joined: 14-October 05 From: Seattle Member No.: 530 |
So cool. Or relatively warm. But really neat... continent-sized depression(?). Determined to act like a continent.
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Sep 23 2011, 04:14 AM
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#10
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Member Group: Members Posts: 395 Joined: 23-February 07 From: Occasionally in Columbia, MD Member No.: 1764 |
QUOTE (JohnVV @ Aug 31 2011, 10:38 PM) I am a bit more giving on the idea ..... But given the long term weathering ( look at the Yucatán impact basin ) from the air you would NEVER see it . So it might be... This logic is risible. Many terrestrial craters are eroded and indistinct. Therefore an uncompelling and indistinct albedo patch on Titan with no apparent morphological expression might be an impact crater ? How about this. Hyperintelligent aliens from Alpha Centauri when visiting Earth would probably avoid making their presence obvious. I am not obviously hyperintelligent. Therefore I might be an alien from Alpha Centauri. Has anyone heard of Bayes' theorem? |
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Oct 24 2011, 06:58 PM
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#11
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Member Group: Members Posts: 119 Joined: 30-August 06 From: Moscow, ID Member No.: 1086 |
More of me turning UMSF into my personal preprint server. Two new VIMS Titan papers out in _Icarus_ in November:
Evaporite by Barnes et al. Seasonal Cloud Activity by Rodriguez et al. Hope you find these of interest! I'm biased, but I think that the VIMS/RADAR combined views from the Evaporite paper are totally sweet. - Jason |
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Oct 24 2011, 08:55 PM
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#12
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Senior Member Group: Members Posts: 2934 Joined: 4-November 05 From: North Wales Member No.: 542 |
Always of interest.
Regarding the VIMS/SAR comparison you refer to - I'm not quite sure what to make of it. The fit is good in some places but completely absent in others. It all makes me reflect on how inadequate our knowledge of Titan will be even after Cassini. The meteorology is sketchy (but may improve), the chemistry even worse (we can only guess at what the evaporites might consist of). |
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Oct 24 2011, 09:17 PM
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#13
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Senior Member Group: Members Posts: 1101 Joined: 14-October 05 From: Seattle Member No.: 530 |
Makes a boat-probe more interesting, no?
Personally I am picturing megacrystals. Just because. |
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Oct 25 2011, 06:03 AM
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#14
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Member Group: Members Posts: 119 Joined: 30-August 06 From: Moscow, ID Member No.: 1086 |
QUOTE (ngunn @ Oct 24 2011, 01:55 PM) the VIMS/SAR comparison . . . fit is good in some places but completely absent in others. Yup -- I talk about that in the paper some. Basically some dry lakebeds used to hold solute-laden-methane (like saltwater), and others must have held fresh methane (i.e. freshwater). Hence some have evaporite deposits at the bottom, and others don't. Best I can figure it, anyway. . . - Jason |
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Oct 26 2011, 12:59 PM
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#15
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Member Group: Members Posts: 395 Joined: 23-February 07 From: Occasionally in Columbia, MD Member No.: 1764 |
QUOTE (ngunn @ Oct 24 2011, 04:55 PM) (we can only guess at what the evaporites might consist of). and indeed we do make such guesses. Of course the two different models are widely different... (EPSC abstract from earlier this month..)
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