Lakes in the limelight, the 2013 image bonanza continues |
Lakes in the limelight, the 2013 image bonanza continues |
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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 ![]() |
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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#2
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 ![]() |
Another thing I've noticed in Ian's stacked image is the suggestion of a large circular feature, similar in size to Menrva and to the northeast of it. Comparing just by eye with the Titan map on Ciclops I estimate its position as very approximately LAT+45 LON 70. The circle itself is brightish and its interior shows stronger light and dark mottling than surrounding areas at the same latitude.
EDIT: Here is a crop of the feature I'm referring to -
Attached image(s)
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#3
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321 ![]() |
Thanks for the addition of the close-up, ngunn. That is an intriguing feature. It seems like some sort of combination of volcanic and lake formation might be involved.
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#4
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 ![]() |
Refering to the circular feature: maybe impact should be considered too?
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#5
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![]() Lord Of The Uranian Rings ![]() ![]() ![]() Group: Members Posts: 798 Joined: 18-July 05 From: Plymouth, UK Member No.: 437 ![]() |
Refering to the circular feature: maybe impact should be considered too? This feature has intrigued me for some time, ever since I spied it on a medium range shot from 2013: Nicknaming it the 'Bullseye', I spotted it again on the VIMS mosaic taken during the T-114 flyby; this is a crop of an undistorted version of PIA20016: Finally, here is our region of interest with the topographic map (courtesy of Ralph Lorenz, et al) lain over the ISS basemap PIA20713: It would appear that the 'Bullseye' is possibly a depression, perhaps even an ancient impact crater that has degraded over time. It may also be analogous to Hotei Regio, which is suspected to be a dry lake bed, harking back to seasonal conditions that favored temperate latitudes. Who knows? ![]() -------------------- |
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