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Titan's changing lakes
ngunn
post Jan 29 2009, 07:22 PM
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Today's big news?
http://ciclops.org/view/5471/CASSINI_FINDS...ILL_TITAN_LAKES

Changes in the south polar region were announced late last year. Is there more to this story now??
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ngunn
post Sep 1 2009, 03:09 PM
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I have to admit I'm baffled by the numbers right now. Area 20 000 sq.km. and volume change 15 cu.km. imply a height change of just 0.75m. They quote an upper limit of 0.1 percent for the bottom gradient - that would translate to a minimum horizontal shrinkage of only 750 metres, surely unobservable in IR. Perhaps it's a lot wider than that, with even shallower gradients. I think we must wait for the full presentation to find out what's really been observed.

Still 15 cubic kilometres is a lot of liquid - enough to fill Loch Ness twice.
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Posts in this topic
- ngunn   Titan's changing lakes   Jan 29 2009, 07:22 PM
- - ngunn   Aah, there's this: http://saturn.jpl.nasa.gov/...   Jan 29 2009, 07:32 PM
- - volcanopele   Here are some the associated graphics: http://pho...   Jan 29 2009, 07:34 PM
- - volcanopele   QUOTE (ngunn @ Jan 29 2009, 12:22 PM) Cha...   Jan 29 2009, 07:35 PM
- - ngunn   That's brilliant, thanks VP.   Jan 29 2009, 07:45 PM
|- - Jason W Barnes   I actually much prefer that these press releases c...   Jan 29 2009, 09:11 PM
|- - ngunn   QUOTE (Jason W Barnes @ Jan 29 2009, 09:1...   Jan 30 2009, 02:14 AM
|- - Jason W Barnes   QUOTE (ngunn @ Jan 29 2009, 08:14 PM) Whi...   Jan 30 2009, 05:33 PM
|- - ngunn   That is indeed most helpful. Although I'm stil...   Jan 30 2009, 08:16 PM
|- - rlorenz   QUOTE (ngunn @ Jan 30 2009, 03:16 PM) Wha...   Feb 4 2009, 03:36 PM
- - Decepticon   Does anyone have a radar swath overlay-ed of the s...   Feb 2 2009, 10:57 AM
|- - titanicrivers   QUOTE (Decepticon @ Feb 2 2009, 04:57 AM)...   Feb 2 2009, 03:15 PM
- - ngunn   Excellent!!   Feb 4 2009, 09:11 PM
- - nprev   Oh, goodygoodygoody...Santa Ralph hints that a bit...   Feb 5 2009, 12:37 AM
- - Juramike   Bam! There it is! Lorenz et al. LPSC (2...   Feb 7 2009, 04:48 PM
- - ngunn   Brilliant discovery - brilliant paper title! ...   Feb 7 2009, 07:20 PM
|- - rlorenz   QUOTE (ngunn @ Feb 7 2009, 02:20 PM) Bril...   Feb 9 2009, 06:22 PM
|- - Jason W Barnes   QUOTE (rlorenz @ Feb 9 2009, 12:22 PM) Bu...   Feb 10 2009, 01:52 AM
- - ngunn   Taking this together with earlier VIMS results, ma...   Feb 8 2009, 08:37 AM
- - nprev   Hmm. Sorry to hear that, Ralph; it was indeed a gr...   Feb 9 2009, 07:57 PM
- - ngunn   Or perhaps other 'disadvantaged' topics we...   Feb 9 2009, 09:15 PM
|- - rlorenz   QUOTE (ngunn @ Feb 9 2009, 04:15 PM) Perh...   Feb 15 2009, 04:21 AM
- - ngunn   Great - another potentially variable lake property...   Feb 15 2009, 07:51 PM
|- - Jason W Barnes   VIMS Ontario Lacus paper is now out in print from ...   Apr 10 2009, 11:32 PM
- - ngunn   A huge thank you (again) for making another fascin...   Apr 11 2009, 07:26 AM
- - titanicrivers   As above. A very readable and yet compelling pape...   Apr 11 2009, 12:28 PM
- - ngunn   Is anybody going to have a go at matching the alti...   Apr 11 2009, 10:04 PM
|- - Jason W Barnes   QUOTE (ngunn @ Apr 11 2009, 03:04 PM) Is ...   Apr 12 2009, 06:25 PM
- - HughFromAlice   The variation in the height of the surface of Onta...   Aug 23 2009, 06:08 AM
|- - Gsnorgathon   Hey! I got lucky and got the whole article. (D...   Aug 23 2009, 05:29 PM
|- - rlorenz   QUOTE (HughFromAlice @ Aug 23 2009, 01:08...   Aug 23 2009, 06:26 PM
|- - djellison   QUOTE (rlorenz @ Aug 23 2009, 07:26 PM) F...   Aug 24 2009, 08:01 AM
- - nprev   It's a fascinating result, Ralph, and clearly ...   Aug 23 2009, 09:08 PM
- - AndyG   Reading this made me think of the artwork by Richa...   Aug 24 2009, 08:26 AM
- - ngunn   BIG changes observed at Ontario Lacus in the 4th a...   Sep 1 2009, 11:24 AM
|- - titanicrivers   QUOTE (ngunn @ Sep 1 2009, 05:24 AM) BIG ...   Sep 1 2009, 12:40 PM
|- - Hungry4info   QUOTE (titanicrivers @ Sep 1 2009, 06:40 ...   Sep 1 2009, 01:15 PM
- - ngunn   Strange, it works for me OK, although it does invo...   Sep 1 2009, 01:34 PM
|- - titanicrivers   QUOTE (ngunn @ Sep 1 2009, 07:34 AM) Stra...   Sep 1 2009, 05:20 PM
|- - HughFromAlice   QUOTE (titanicrivers @ Sep 2 2009, 02:50 ...   Sep 1 2009, 11:30 PM
- - belleraphon1   All.. I found I had to outside the forum and go ...   Sep 1 2009, 01:54 PM
- - belleraphon1   And, of course, I copy the wrong abstract... sorry...   Sep 1 2009, 01:57 PM
- - remcook   How well do the ISS and RADAR 'shorelines...   Sep 1 2009, 02:36 PM
- - ngunn   I have to admit I'm baffled by the numbers rig...   Sep 1 2009, 03:09 PM
- - Sunspot   So when will us common folk get to see the T57/T58...   Sep 1 2009, 03:40 PM
- - ngunn   I've edited my previous post 42 to correct a n...   Sep 1 2009, 06:18 PM
- - volcanopele   Well, hopefully they will broadcast the oral sessi...   Sep 1 2009, 11:34 PM
- - ngunn   This presentation will compare apparent shorelines...   Sep 3 2009, 11:12 AM
- - Olvegg   NASA Cassini Radar Observes Seasonal Change in Tit...   Oct 7 2009, 06:11 PM
|- - titanicrivers   QUOTE (Olvegg @ Oct 7 2009, 01:11 PM) NAS...   Oct 8 2009, 03:32 AM
- - ngunn   Spectacular changes - and so plain to see! (No...   Oct 7 2009, 08:38 PM
- - ngunn   I am trying to post the VIMS image of the bottom r...   Oct 7 2009, 09:50 PM
- - volcanopele   I think the ISS/VIMS/RADAR story is coming along n...   Oct 7 2009, 10:02 PM
|- - Webscientist   QUOTE (volcanopele @ Oct 8 2009, 12:02 AM...   Oct 8 2009, 08:54 PM
- - ngunn   Link from remcook: http://www.sciencedirect.com/s...   Oct 7 2009, 10:28 PM
- - volcanopele   I guess my comment is that I think they have it ba...   Oct 7 2009, 11:58 PM
- - Sunspot   How wide is thay channel where it appears to open ...   Oct 8 2009, 07:53 AM
- - volcanopele   The landing site might depend on the season when t...   Oct 8 2009, 09:03 PM
- - nprev   Hmm. It does seem as if the 'desert' equat...   Oct 8 2009, 09:13 PM
|- - ngunn   QUOTE (nprev @ Oct 8 2009, 10:13 PM) Huyg...   Oct 8 2009, 09:53 PM
- - volcanopele   Yeah, and storms are not unheard of at the latitud...   Oct 8 2009, 09:18 PM
- - nprev   Gotcha. I'm definitely thinking flash floods a...   Oct 8 2009, 09:36 PM
- - djellison   Some posts have been removed from this thread, as ...   Oct 9 2009, 04:33 PM
- - titanicrivers   Check out Photojournal http://photojournal.jpl.nas...   Oct 10 2009, 03:01 PM
- - ngunn   VIMS sees specular reflection from Kraken Mare: Q...   Oct 25 2009, 09:48 PM
|- - Jason W Barnes   QUOTE (ngunn @ Oct 25 2009, 02:48 PM) On ...   Oct 26 2009, 02:00 PM
- - ngunn   And there's so much more - here: (struggling ...   Oct 25 2009, 10:50 PM
- - ngunn   Personal anecdote: perhaps not many people remembe...   Oct 26 2009, 12:01 AM
|- - Jason W Barnes   QUOTE (ngunn @ Oct 25 2009, 05:01 PM) The...   Oct 26 2009, 05:32 PM
|- - rlorenz   QUOTE (Jason W Barnes @ Oct 26 2009, 01:3...   Nov 1 2009, 03:11 PM
|- - Jason W Barnes   QUOTE (rlorenz @ Nov 1 2009, 08:11 AM) As...   Nov 2 2009, 06:54 PM
|- - rlorenz   QUOTE (Jason W Barnes @ Nov 2 2009, 01:54...   Nov 6 2009, 08:58 PM
|- - volcanopele   QUOTE (rlorenz @ Nov 6 2009, 01:58 PM) Wo...   Nov 6 2009, 09:26 PM
|- - Jason W Barnes   QUOTE (rlorenz @ Nov 6 2009, 01:58 PM) Hm...   Nov 7 2009, 05:54 AM
- - ngunn   Another morsel from the conference abstracts. Any...   Oct 26 2009, 01:34 PM
- - ngunn   Catching the lakeshine: Radar 21st December ...   Oct 26 2009, 02:33 PM
|- - Jason W Barnes   QUOTE (ngunn @ Oct 26 2009, 07:33 AM) Cat...   Oct 26 2009, 02:46 PM
- - ngunn   Yeah, you caught the sun's direct reflection a...   Oct 26 2009, 03:04 PM
- - ngunn   Thanks, Jason. Congrats to the team and good luck ...   Oct 27 2009, 12:41 PM
- - ngunn   Excuse a very basic question: would that be one pi...   Nov 1 2009, 07:25 PM
|- - Juramike   QUOTE (ngunn @ Nov 1 2009, 02:25 PM) Excu...   Nov 1 2009, 08:05 PM
||- - ngunn   QUOTE (Juramike @ Nov 1 2009, 08:05 PM) a...   Nov 1 2009, 09:17 PM
|- - Jason W Barnes   QUOTE (ngunn @ Nov 1 2009, 12:25 PM) Excu...   Nov 2 2009, 06:56 PM
- - ngunn   Article on seasonal and longer term change: http:/...   Nov 30 2009, 10:53 AM
|- - volcanopele   We shall see. I still think its seasonal.   Nov 30 2009, 05:17 PM
|- - Jason W Barnes   QUOTE (volcanopele @ Nov 30 2009, 10:17 A...   Nov 30 2009, 05:37 PM
- - volcanopele   Where are the south polar dry lakes? What do you ...   Nov 30 2009, 05:53 PM
|- - Jason W Barnes   QUOTE (volcanopele @ Nov 30 2009, 10:53 A...   Nov 30 2009, 07:05 PM
|- - ngunn   QUOTE (Jason W Barnes @ Nov 30 2009, 07:0...   Nov 30 2009, 09:06 PM
||- - Juramike   QUOTE (ngunn @ Nov 30 2009, 04:06 PM) Of ...   Nov 30 2009, 09:54 PM
|- - rlorenz   QUOTE (Jason W Barnes @ Nov 30 2009, 02:0...   Dec 1 2009, 11:23 PM
|- - Jason W Barnes   QUOTE (rlorenz @ Dec 1 2009, 04:23 PM) Ti...   Dec 2 2009, 05:54 PM
- - ngunn   I don't have access to the full paper, but fro...   Nov 30 2009, 06:00 PM
- - Juramike   I really, really, like the idea of the longer term...   Nov 30 2009, 07:51 PM
- - ngunn   I've been checking authors' websites, but ...   Nov 30 2009, 08:32 PM
- - volcanopele   Very nice article! Thanks for the link. Thou...   Nov 30 2009, 08:50 PM
|- - Juramike   QUOTE (volcanopele @ Nov 30 2009, 03:50 P...   Nov 30 2009, 09:46 PM
- - ngunn   Yes. And if the lakes 'breathe' into and o...   Nov 30 2009, 10:27 PM
- - remcook   So, what is new in this paper? The speculation abo...   Dec 2 2009, 08:35 AM
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