Large, Deep, Black Cavern?

1 | 2 | 3 | 4 | 5 Next
Author Message
Paul Anderson







PostPosted: May 24, 2007 12:27 AM 

About 100 metres (330 feet) across and pitch black. Cavern?

http://hiroc.lpl.arizona.edu/images/PSP/diafotizo.php?ID=PSP_003647_1745

____________________

Planetaria
a chronicle of planetary exploration
web.mac.com/paulscottanderson/iWeb/planetaria

Paul Anderson Author Profile Page


Posts: 243

Reply: 1



PostPosted: May 24, 2007 12:34 AM 

Correct link:

http://hiroc.lpl.arizona.edu/images/PSP/diafotizo.php?ID=PSP_003647_1745

Not sure why extra text was added at the end before when I made it a clickable link.

a1call Author Profile Page


Posts: 509

Reply: 2



PostPosted: May 24, 2007 2:36 AM 

WoW Very Happy

Henry Author Profile Page


Posts: 2896

Reply: 3



PostPosted: May 24, 2007 2:44 AM 

Very strange...

dx Author Profile Page


Posts: 803

Reply: 4



PostPosted: May 24, 2007 3:37 AM 

WOW is right a1call, about 400 feet or so in diameter. And damned near perfectly round in a bright dusty lava plain...good to know about this kind of stuff, don't want to land there.

yt
dx

UR


Posts: 1

Reply: 5



PostPosted: May 24, 2007 9:43 PM 

Anyone care to comment about the slight 'plume like' brightness spreading up from the top of the 'circle' and for that matter the bright ring like surround on the right ot it??

Darwin Author Profile Page


Posts: 1238

Reply: 6



PostPosted: May 25, 2007 6:21 AM 

Ur,

It is dust and glare. If you see anything else you will be a woo-woo. Now stop it. Find you a nice rock to look at.

Darwin

unfrozen rover fan


Posts: 2

Reply: 7



PostPosted: May 25, 2007 11:52 AM 

Maybe this where Ringo's hole in his pocket went to!

unfrozen rover fan


Posts: 2

Reply: 8



PostPosted: May 25, 2007 11:53 AM 

Maybe this is where Ringo's hole in his pocket went to!

UR


Posts: 1

Reply: 9



PostPosted: May 25, 2007 2:32 PM 

Darwin,

I thought this forum was for discussion not derision.
At the risk of a further eccentric response let me say- I really hate bullies.

Yes it looks like dust and glare but ask yourself why there? what process could make it appear the way it does?

If its an extremely deep hole with vertical sides and no raised rim as stated in the image comment where does the glare at the side come from?

If you have a sensible idea then please respond, otherwise we would appreciate it if you be so good as to try to restrain yourself.

Darwin Author Profile Page


Posts: 1238

Reply: 10



PostPosted: May 25, 2007 2:37 PM 

UR,

I was being silly, I am in a war right now so we can ask about anything and not be a woo-woo. I am on your side. It should be open to anything of intrest on Mars. That was a good observation. Must be vapor related.

Darwin

Henry Author Profile Page


Posts: 2896

Reply: 11



PostPosted: May 25, 2007 2:43 PM 

UR:

I see what you are referring to. Thanks, because I would have missed it otherwise.

I suppose a hole that large must have considerable internal volume, and maybe can create its own minor “weather” inside.

I think there are other holes in this region also. Check out the Unmanned Spaceflight blog, for a discussion in the Mars Satellite section, HIRISE I think…

Darwin Author Profile Page


Posts: 1238

Reply: 12



PostPosted: May 25, 2007 3:02 PM 

Ur,

Your moisture plum shows up real well here.

http://themis-data.asu.edu/img/browse/V18315002?band=3&stretch=S2

Darwin

Darwin Author Profile Page


Posts: 1238

Reply: 13



PostPosted: May 25, 2007 3:09 PM 

UR,

Looks like there is a Cleaveland on Mars.
Cave effect snow. Who would have thonk it?

Darwin

Darwin Author Profile Page


Posts: 1238

Reply: 14



PostPosted: May 25, 2007 3:26 PM 

UR,

How cave effect snow would work. The air in the cave would be warmer at night than the radiationally cooled air on the surface. The warmer air in the cave would hold more moisture. As the wind blew over the cave entrance the warm moist air in the cave would be blown downwind condensate and precipitate out.

Darwin

Mario59


Posts: 194

Reply: 15



PostPosted: May 25, 2007 4:50 PM 

test

Mario59


Posts: 194

Reply: 16



PostPosted: May 25, 2007 5:07 PM 

HI, FMR, !!!
Why I get kinda INTERNAL server ERROR when I poste a "reply" in Mars Rover Blog????
Anyway, my answer goes right there ("test" above is a "proof"!!!).

Ok let's go back to the "gang" here.
& ALSO let's go back to the "pit"!
For me this pit, if deep as thought, should be at least 3-4 times it's diameter!!!!
So we should have something around 1.2-1.6 km deep... mmmh! doubts arose in me!
Rolling Eyes
If so, how's possible to get SO STEEP & VERTICAL cleefs all around !?!?!
(it has been supposed to be almost VERTICAL!!!) without any sign of COLLAPSE!!! mmmh! cannot imagine ANY immediate geological effect that can produce such a "hole" !!!! isn't it?
For me, instead, it is not a "hole", it's more kinda "lake" !!!!
If you have a look at the Italian Bolsena lake as seen from satellite you will find something very very similar.
Have a look here:

link

So there should be something "fluid" there (not water, since we're at the poles!!!
BUT FLUID, SO DARK (as seen from satellite &
FEATURELESS!!!!)
whatddayathink???


Very Happy Very Happy

Darwin Author Profile Page


Posts: 1238

Reply: 17



PostPosted: May 25, 2007 5:37 PM 

Mario,

You are the man, Zoom in to the north shore and you will see a pennesula. I dont know of a cliff face that could do that. Looks like a shore line. Could be an obtical illusion.

Darwin

Darwin Author Profile Page


Posts: 1238

Reply: 18



PostPosted: May 25, 2007 5:55 PM 

Mario,

Th moisture plume down wind is visible. Any ideas what it could be?

Darwin

Darwin Author Profile Page


Posts: 1238

Reply: 19



PostPosted: May 25, 2007 6:14 PM 

Mario'

Says 5.5 degrees latitude. Thats not the poles.

Darwin

Henry Author Profile Page


Posts: 2896

Reply: 20



PostPosted: May 25, 2007 7:17 PM 

Has to be sinkhole. But what “sunk” to produce it? My guess would be ancient water formed the cavern, which collapsed maybe fairly recently.

If it were a fluid-filled hole of some sort, there would be a specular reflection of some sort from the surface…

1 | 2 | 3 | 4 | 5 Next


Join the conversation:















Very Happy Smile Sad Surprised
Shocked Confused Cool Laughing
Mad Razz Embarassed Crying or Very Sad
Evil or Very Mad Twisted Evil Rolling Eyes Wink
Powered by MTSmileys