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Matyas
I am thinking the water cycle is stable under the surface. On Earth it is above surface and primarly solar driven. On Mars it is under the surface and more atmosphere driven, boiling off at the surface and refreezing as ice clouds. So the surface is crusty and muddy underneath, depending on the weather...
Gully system on Devon Island [ltop] similar in morphology, scale, and context (they form preferentially along the cold, north-facing walls of valleys) to some of the recent gully systems reported on Mars [bottom].
Liquid Was Here?
A gully is seen on the Martian surface in this image taken by the Mars Global Surveyor. Researchers have documented the formation of new craters and found possible evidence for liquid water trickling down crater walls. Scientists found bright, light-colored deposits in the gullies that weren't present in the original photos. They concluded the deposits, possibly mud, salt or frost, were left there when water recently cascaded through the channels.
Originally posted by blue bird- and a little salt for further lowing the freezing point
Originally posted by Matyas
2. Hydrogen peroxide percipitation
On a low-oxygen planet, the H2O2 could have provided an important source of oxidants for driving the evolution of oxygen-mediating and -using enzymes.
This team, using again the same instrument in June 2003, has been able this time to detect the H2O2 molecule and to map it over the Martian disk.
Remarkably, the measured abundance is significantly larger than the upper limit inferred in 2002 , which shows evidence for strong seasonal variations.
The H2O2 abundance and its spatial distribution, which exhibits a maximum in the morning side, around the sub-solar latitude, are this time in satisfactory agreement with the theoretical predictions, and, in particular, with the 3D simulations performed at the Laboratoire de Météorologie Dynamique.
The amount of H2O2 inferred from the observations is also in good agreement with the global measurement, integrated over the Martian disk, achieved in the submillimeter range, in September 2003, by a team from the Space Science Institute in Boulder .
The nature of the seasonal cycle of H2O2 and its relation with the water cycle remain to be understood.
Almost!
Originally posted by Matyas
Be sure to name the next probe Blue Bird!
Scheduled for launch in August 2007, the Phoenix Mars Mission is the first in NASA's Scout Program. Phoenix is designed to study the history of water and habitability potential in the Martian arctic's ice-rich soil.
I am usually wrong when viewing things that could be in or out of the ground depending of the light direction, but in this case I think you are the one who is wrong, the light on the original strip comes from the left and a bit from the top, in an angle of 72º from the top of the image to the left, so that is not a lake, its a mesa (I suppose its the correct name of such structures).
Originally posted by blue bird
Lake on Tithonium Chasma floor!?
* BW
original MSSS strip
Originally posted by ArMaP
I am usually wrong when viewing things that could be in or out of the ground depending of the light direction, but in this case I think you are the one who is wrong, the light on the original strip comes from the left and a bit from the top, in an angle of 72º from the top of the image to the left, so that is not a lake, its a mesa (I suppose its the correct name of such structures).
[edit on 12/6/2007 by ArMaP]
I am sorry, but I don't understand what you mean, could you rephrase it?
Originally posted by blue bird
It looks like mesa (btw. to many staff on Mars is attributed, should one say tempered,mesa )- but the summit plateau seems depression like( to me) filled with something fluid like !?
Originally posted by blue bird
I am saying, that the top look like depression filled with fluid ( water). I am saying, in other words - that this plateau don't look to me like a flat rock. i can see rims of this object , and inside a smooth surface ,that does not look like solids.And it appears reflective. Like a bowl filled up.
95.32% Carbon Dioxide - CO2
2.7% Nitrogen - N2
1.6% Argon - Ar
0.13% Oxygen - O2
0.07% Carbon Monoxide - CO
0.03% Water - H2O
0.00025% Neon - Ne
0.00003% Krypton - Kr
0.000008% Xenon - Xe
0.000003% Ozone - O3
Originally posted by blue bird
If it is on Burn Cliff - it is slope ,unfortunately. coz it was said: Endurance floor
Originally posted by blue bird
I think the problem for Levin would be - the fact that he didn't know the exact position.
But - the whole image looked to me as a FLOW....that slope is full of little erosions - small depressions in the soil, between the rocks? Why would not underground water run downhill?
[edit on 12-6-2007 by blue bird]
Editor's Update: No puddles on Mars, New Scientist
"I want to retract the claim in the paper that the smooth area we discussed was 'standing liquid water'," Levin acknowledged on Tuesday. "I am sorry that we made such a large mistake."