Re: No sailing on Mars


"Jonathan" <write@xxxxxxxxxxxxx> wrote in message
news:HX0ci.501$zR1.26@xxxxxxxxxxxxxxxxxxxxxxxxx

"Frogwatch" <oldfrogster@xxxxxxxxx> wrote in message
news:1181778015.062610.117140@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx


It is Levin himself who suggested they were puddles. There was no
claim, just a suggestion.


Did they bother to check the slope? It's only about 10 degrees
at most places at Endurance, and you can see the rover is on
that slope in the pic. See my re from yesterday in sci.space.policy
where I explained they are seeing talcum like dust in channels
and puddles formed long ago. Mars has ice ages like here on
earth, and it seems pretty clear that underground
ice occassionally melts out and runs down the crater
walls.

Odyssey Studies Changing Weather And Climate On Mars

"Frozen water makes up as much as 10 percent of the top meter (three feet)
of surface material in some regions close to the equator. Dust deposits
may be covering and insulating the lingering ice"

http://marsprogram.jpl.nasa.gov/odyssey/newsroom/pressreleases/20031208a.html



So these are water features. Just old and filled with fine
powdery dust that gives it an illusion of water or
dirty ice.

Look again at the pic, those are freeze and thaw cracks.
http://www.newscientist.com/blog/space/2007/06/no-puddles-on-mars.html

And compare these two pics carefully. One is from the very same
area on the side of Endurance crater as the pic above.
The other is from Yellowstone. The only difference is from
the 10 degree slope. Otherwise they're both clearly water
features.


Look at the shadows.....the delicate and characteristic
erosion patterns seen in the ...shadows.

Yellowstone mudpot

http://www.nps.gov/yell/slidefile/thermalfeatures/mudpots/midwaylower/Images/05402.jpg
Endurance mudpot

http://qt.exploratorium.edu/mars/opportunity/pancam/2004-07-16/1P143185259EFF3221P2397R1M1.JPG


And if you're looking for a great big 'puddle' in Mars.
How about this frozen one, it's the size of the
Red Sea.


Lunar and Planetary Science XXXVI (2005)

EVIDENCE FROM HRSC MARS EXPRESS FOR A FROZEN SEA
CLOSE TO MARS' EQUATOR.

"We have found evidence consistent with a presently-existing
frozen body of water, with surface pack-ice, around +5º latitude
and 150º east longitude in southern Elysium. It measures about
800 km x 900 km and averages up to 45 m deep: similar
in size and depth to the North Sea. It has probably
been protected from complete sublimation by a surface
sublimation lag formed from suspended sediment exposed
by early loss of the surface"
http://www.lpi.usra.edu/meetings/lpsc2005/pdf/1741.pdf


Guys, the water on Mars didn't dissipate into space.
It went underground.


mars has polar ice caps.


.

Relevant Pages

  • Re: No sailing on Mars
    ... It is Levin himself who suggested they were puddles. ... Did they bother to check the slope? ... Odyssey Studies Changing Weather And Climate On Mars ... So these are water features. ...
    (sci.military.naval)
  • Pack ice suggests frozen sea on Mars
    ... A frozen sea, surviving as blocks of pack ice, may lie just beneath the surface ... of Mars, suggest observations from Europe's Mars Express spacecraft. ... But the site of the plates, near the equator, means that sunlight should have ... "I think it's fairly plausible," says Michael Carr, an expert on Martian water ...
    (sci.geo.geology)
  • Re: Antarctic Glaciers Sloughing Of Ice Has Scientists at a Loss
    ... Antarctic Glaciers' Sloughing Of Ice Has Scientists at a Loss ... Antarctica and their "ice streams" to lose ice to the ocean in recent ... Huge Deposit of Ice Is Gauged at the South Pole of Mars ... blanket the planet in 36 feet of water if they were liquid, ...
    (sci.military.naval)
  • Re: A wet Mars but was it cold or warm?
    ... There's plenty of evidence of frozen water on Mars, ... EVIDENCE FROM HRSC MARS EXPRESS FOR A FROZEN SEA ... Wobbles of Mars Produced 40 Ice Ages ...
    (sci.space.policy)
  • How to really terraform (part 1)
    ... The #1 problem on Mars is the lack of surface water. ... all of Mars's surface water has ended up at the poles. ... the ice off the poles and into the equatorial regions where it will ... a large part of the terraforming problem is ...
    (sci.space.policy)