Martian Hydrology |
Martian Hydrology |
Nov 23 2010, 08:46 PM
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#1
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
An interesting article from Space Daily today: http://www.marsdaily.com/reports/Shallow_G...n_Mars_999.html
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Dec 8 2010, 05:53 AM
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#2
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Member Group: Members Posts: 555 Joined: 27-September 10 Member No.: 5458 |
I remember a while back spirit recording a temperature above 0C. Again, much of the atmosphere is too light to allow for water to exist on the surface. However given a deep enough crater/cavern/ravine or under the soil far enough where the pressure will be above the triple point, water could very possibly exist as liquid. Mars is extremely cold but it isn't always as such. Also, the difference between completely frozen over and completely liquid can waiver entirely on those couple of degrees that water impurities can provide.
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Dec 8 2010, 11:21 AM
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#3
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Junior Member Group: Members Posts: 59 Joined: 12-November 09 Member No.: 5039 |
I remember a while back spirit recording a temperature above 0C. That's the maximum detected temperature. What was the detected minimum? And what that tells you about average temperature? Viking landers detected temps in -17...-107 C range. IOW: they never saw temperatures approaching positive Celsius in more than 6 years of operation. For reference: Viking 1 landed at ~22 N latitude and Viking 2 landed at ~48 N latitude. Viking Orbiters detected (with remote sensing) temps in 27...−143 C range over the entire globe. |
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