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Water ice in crater at Martian north pole

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ps1074 Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jul-28-05 12:58 PM
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Water ice in crater at Martian north pole


The HRSC obtained these images during orbit 1343 with a ground resolution of approximately 15 metres per pixel. The unnamed impact crater is located on Vastitas Borealis, a broad plain that covers much of Mars's far northern latitudes, at approximately 70.5 North and 103 East.

The crater is 35 kilometres wide and has a maximum depth of approximately 2 kilometres beneath the crater rim. The circular patch of bright material located at the centre of the crater is residual water ice.

This white patch is present all year round, as the temperature and pressure are not high enough to allow sublimation of water ice.

http://www.physorg.com/news5487.html

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Rainbowreflect Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jul-28-05 01:35 PM
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1. That is so cool.
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Kraklen Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jul-28-05 01:39 PM
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2. The pressure isn't high enough to allow sublimation of water?
?
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Richard Steele Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jul-28-05 01:43 PM
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4. ??? indeed; I think it works the other way around, no?
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Kraklen Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jul-28-05 01:44 PM
Response to Reply #4
5. Pretty poorly worded.


But I guess that's what you've got to expect from science journalism.
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Richard Steele Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jul-28-05 02:16 PM
Response to Reply #5
7. Yes. "Science Reporters" are generally Reporters, not Scientists. nm
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Kazak Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jul-28-05 01:42 PM
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3. Mars...
I though it was already pretty well known and accepted that Mars features frozen polar ice caps. :shrug:
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Kraklen Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jul-28-05 01:45 PM
Response to Reply #3
6. Almost entirely carbon dioxide.
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Emperor_Norton_II Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jul-28-05 02:19 PM
Response to Reply #3
8. That's not up at the cap, though
That's at 70N, well south of there.
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