Titan's changing lakes |
Titan's changing lakes |
Jan 29 2009, 07:22 PM
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#1
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
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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Feb 9 2009, 09:15 PM
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#2
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
Or perhaps other 'disadvantaged' topics were felt to be in need of positive discrimination?
Anyhow, for us distant abstract-consumers one format is much like another and each new revelation is a treasure. Perhaps Ralph will take a question from the floor here. It's about surface gravity waves on the lake. I would like to ask whether this observation, or others like it, can be used to place limits on either the height or gradient of surface waves. For example can we say from this that the surface (in the brightest part) is smooth and flat right down to centimetre scales? Or is there still the possibility of an oily swell? (sorry) |
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Feb 15 2009, 04:21 AM
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#3
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Member Group: Members Posts: 613 Joined: 23-February 07 From: Occasionally in Columbia, MD Member No.: 1764 |
Perhaps Ralph will take a question from the floor here. It's about surface gravity waves on the lake. I would like to ask whether this observation, or others like it, can be used to place limits on either the height or gradient of surface waves. For example can we say from this that the surface (in the brightest part) is smooth and flat right down to centimetre scales? Or is there still the possibility of an oily swell? (sorry) Yes, the echo shape and amplitude (and the radiometry) pose severe constraints on how flat the lake surface must be - a detailed modeling effort is ongoing. |
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