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USTRAX! Here is your Abyss.
djellison
post Mar 19 2007, 06:41 PM
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QUOTE (tty @ Mar 19 2007, 06:40 PM) *
They are actual holes in the roof of the tube,


I know - the still I did is sort of an X-Section along the tube.

Doug
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djellison
post Mar 19 2007, 08:05 PM
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Pulled out what I can find from the HRSC images....one could, if feeling hatefull towards ones ISP - get some of the stereo pairs and have a go, but I don't think you would learn much.

Doug
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hendric
post Mar 19 2007, 09:28 PM
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I guess this is a pretty stupid question, but why are they so round? I would expect a tube collapse to be sinuous, or at least oval.


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tty
post Mar 19 2007, 10:03 PM
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Perhaps impactors punched holes in the roof? Even small secondaries would probably have power enough to do that.
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babakm
post Mar 19 2007, 10:18 PM
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They look transposed vs the original images, but on another note, is there any value in stacking them? There are three images of Dena and two of the others to work with.
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ngunn
post Mar 20 2007, 02:50 PM
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QUOTE (hendric @ Mar 19 2007, 09:28 PM) *
I guess this is a pretty stupid question, but why are they so round? I would expect a tube collapse to be sinuous, or at least oval.


This would be how the collapse starts. For the final stage see the natural bridge in Tartarus Colles:
http://www3.telus.net/paulanderson/bridge_PSP0014202045.jpg

Note the roughly semicircular edges either side of the bridge.
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jaredGalen
post May 24 2007, 01:01 AM
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Is there any radar coverage of any of these areas or would this become an interesting candidate? Or is the radar sensitive enough at 100m depth?

Seems from the discussions here that a lava tube type collapse is most likely so perhaps there is no need for radar coverage. still just wondering.


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Guest_PhilCo126_*
post Jun 6 2007, 08:51 PM
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APD :
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