T58 (July 8, 2009 / Rev 114) |
T58 (July 8, 2009 / Rev 114) |
Jul 2 2009, 02:07 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 |
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Aug 7 2010, 05:46 PM
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#2
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Senior Member Group: Moderator Posts: 3232 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Illumination is from below. So that is actually a depression, not a raised area. This feature is most likely a dried lakebed.
-------------------- &@^^!% 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 9 2010, 01:58 PM
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#3
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Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
This feature is most likely a dried lakebed. ...with steep sides around the edges. However, that central darker spot in the largest bright area *might* be a slight depression infilled with different RADAR-reflecting properties. Damp muds, for example. -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Oct 2 2010, 04:44 PM
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#4
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
A four-frame VIMS animation showing the evolution of the lake specular point:
Magnified 5x using nearest neighbor interpolation to show the actual specular point pixel size. It's only visible at 5 microns, the green (4.67 microns) and blue (3.26 microns) channels aren't in methane windows, they were chosen merely so they wouldn't be overexposed in the longer exposure cubes. -------------------- |
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Oct 2 2010, 07:32 PM
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#5
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Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
Thanks for the movie, ugordan. This is an elaboration ot third frame, compared to original...
-------------------- I always think before posting! - Marco -
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