Possible Ice II

dx, your "guess" in reply 59 profoundly depresses me.

It means you didn't even take the trouble to read the caption on the link in reply 58:
a sol 21-44 super 3D animation comparison of changes to the ice under the lander -- or follow it and view the animation and read the Flickr comments.

3D -- as in a side-by-side crossed-eye pair of images; animation -- as in a time series of images.

If one of the regulars doesn't even follow the links and look at the images and understand them -- then what hope is there of reaching "the masses"?

I remember a remark by a great poet to the effect that he expected the reader of his poems to work at least as hard reading the poem as as he did writing it.

( this is one of those rare moments that my elephantine memory fails me: I remember the sentiment but not the exact words or the poet. )

I expect you to work as hard looking at the images as I did creating them.

I was planning on my great escape from Mars tomorrow. But I think I will blast off a little early.

(I'm, I'm so tired.)

Bye.

Hi Hort,
Although a regular I too would have to guess or research raw images on this one as the frames aren't visibly notated by sol. The larger particle bottom right that then disappears is in the same frame as the cracks. I assume the cracks are developing not filling in and therefore the large particve blew in rather than sublimated. Bit of movement of smaller particles. I for one think your animations, particularly the 3Ds are a superb tool for analysis of what is going on.

horton>>>

I did not click on the image to go to your site to review a gif...

yt
dx

Beautiful!!!
You did it Horton!
Thanks for letting us see this.
Clear evidence of sublimation (especially Reply 55) but much slower than I would have expected. Maybe we'll be able to atch some berries form here!

OK, dx, I did an affine registered animation of the 21-44 changes to the ice under Phoenix. Click here to see the animation.

Thanks for bringing to my attention once again that not everyone can "do" side-by-side crossed-eye 3D.

What I think this very, very carefully registered and brightness matched animation is that you can actually see the shape of the ice block change -- as well as see the propagation of the cracks.

Cool.

h>>>

thank you for considering my 3D cross-eyed problem!

yt
dx

sol 73 RAC 3D under the lander:

The ice acne appears to be growing. There is an interesting linear patch of the white stuff on the strut on the lower right.

My guess is that we will see icicles before the lander dies.

Yep, and snow white is deteriorating as it sublimates. No doubt where the water vapour is coming from. http://fawkes1.lpl.arizona.edu/images.php?gID=19379&cID=209

sol 75 RAC view of (icy soil)? in scoop:

OK, I have to ask.

What is the light stuff "stuck" to the side of the scoop?

It is some really tough stuff: Shake it, bake it, scrape it, freeze it -- and it still hangs tight.

Are we looking at some sort of chemical alteration on the scoop itself? What would perchlorides do to whatever coats the surface of the scoop?

( IE, does anyone know what coats the scoop? ( Please don't say "paint" )

In response to the query of Reply 69, I found the following:

http://www.nasf.org/staticcontent/Anoplate%20press%20release.pdf

The scoop is made of anodized aluminum. (I think "anodized" means coated with aluminum oxide.)

If the ice is sublimating in Snow White why is it rising up and then growing on Pheonix? Is it because it's in the shade? What happens to make it disperse and then condense again falling back to the ground then getting itself attached to the landing gear.

Reply 69

Is it something stuck to the scoop or has the soil removed a coating inside it?

KPM

The lander leg is probably some 30C colder than the ambient air. I posted this in the Who thread, but for those that missed it, Liquid nitrogen tank on Earth.

Fred

So, now geniuses selebrate that they've photographed frost

Which was many times suspected on Spirit pictures..

And, which means that humidity was 100%.

So, the case against possibility of life continue to unravel.

eS

Er, are you referring to this picture?:

The brightness change is consistant with a lighting geometry change.

Sol 21-82 Gildilocks changes:

If anywhere I would expect frost here first.

or maybe here:

There do seem to be some bluish areas similar to the "icy soil" on the top if the soil.

Or maybe here or here?

I think the frost will be far more dramatic when it comes.

sol 80 midnight sun:

When the sun finally sets then I think we will see some serious frosting.

When we get to -110C to -125C we should see snow. Where is a weatherman when you need him.

Fred

In the upper right there is a small depression, that i noticed was somewhat smoother than the surrounding area. With acloser look, there seems to be ice exposed here and there among the rocks.

a closer look.

mann>>>

please go the the first post in this thread of June 12th.

yt
dx

Hi dx. i assembled your linked images, and the lighter areas are on little knolls and hills. It could be frost.
My image is a depression, with small patches of exposed Ice i believe.

I try to assemble as many images as i can, but i use This site, as i can easly read the file to assemble color..
[link]