May 23, 2007, HiRISE release Options

[Guest_AlexBlackwell_*]

May 23, 2007, HiRISE release

[djellison]

I doubt it's wind through the lava tube itself. Think of a crater - that can have a dust tail of some sort and there's no network to do that. I imagine it's just a function of prevailing wind and topography. Wind blowing over a lage flat area suddently finding a big hole is going to get chucked up a bit - you might even find that the area under the hole is at a slight negative pressure relative to the surrounding area because of it.

Another thought - given that this tube is beginning to collapse at this one obvious site and potentially many others, it's quite likely that the tube itself isn't much of a tube anymore and more like a range of adjacant chambers. Who knows...I can't imagine we will for a few decades.

Doug

[Juramike]

...I imagine it's just a function of prevailing wind and topography. Wind blowing over a lage flat area suddently finding a big hole is going to get chucked up a bit - you might even find that the area under the hole is at a slight negative pressure relative to the surrounding area because of it.

What would it sound like next to the hole? Would it whistle in the wind?

How fast would the wind have to go past the hole to get any sound at all?

(High frequency or low frequency? How would it compare to a similar setup on Earth? Is the frequency dependant on the absolute depth and inner structure?)

Any wild guesses?

-Mike