Lakes in the limelight, the 2013 image bonanza continues |
Lakes in the limelight, the 2013 image bonanza continues |
Sep 13 2013, 02:20 PM
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#101
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
A fantastic collection of new images of the northern lakes has just arrived: http://saturn.jpl.nasa.gov/photos/raw/rawi...?imageID=298704
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Apr 21 2017, 04:24 PM
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#102
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Member Group: Members Posts: 495 Joined: 12-February 12 Member No.: 6336 |
The features that appeared then to disappeared in liquid on Titan have indeed turned out to be foamy bubbles.
This finding is described in a paper in Nature and a popularized treat on the subject is found in Universe today. |
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Apr 22 2017, 03:40 PM
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#103
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Member Group: Members Posts: 611 Joined: 23-February 07 From: Occasionally in Columbia, MD Member No.: 1764 |
The features that appeared then to disappeared in liquid on Titan have indeed turned out to be foamy bubbles. No they have not. The study (to which I also contributed) showed that nitrogen bubbles could be formed in certain circumstances. Such bubbles could account for some transient phenomena observed on Titan's seas (aka 'the magic island' observed in radar) but they cannot account for all the transient features observed (notably by VIMS, which only sees the top fraction of a millimeter of material). A more parsimonious theory is that surface roughness (either locally wind-driven, i.e. 'catspaw', or nonlocally - i.e. wind-driven currents) explains all the observed transients. Bubbles are still fun to think about, though. |
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