Re: More stream of consciousness from Danny

Posted by Dale on Mar 16, 2002 at 09:37
(204.212.212.7)

Re: Martian Surface Features Were Eroded By Liquid Carbon Dioxide (DA Morgan)

Here I go on a fool’s errand again. Trying to follow another of Danny’s stream of consciousness posts. But I’ve got a few moments so here goes:

Ms. Smith: “It only goes directly from solid to gas at certain pressures, like at earth's atmospheric pressure. At other pressures it can undergo the more familiar solid to liquid to gas transition.”

Little Danny’s response: “This work is purely speculative.”

http://www.co2clean.com/snowform.htm

As you can see, Little Danny, the comment you responded to isn’t as speculative as you would like to believe. You could have made a more intelligent response that the triple point of CO2 is at a pressure far higher than is available on Mars and we would have had to explain that it could have been liquid CO2 under a large amount of rock rubble but you didn’t. You said that the ability of CO2 to exist as a liquid was “speculative”.

You then went on to say the fact that water was present was not speculative. That is a half truth at best. If in a generous mood we might point out that, like CO2, the triple point of water makes it impossible for liquid water to exist on the Martian surface today. Sure there is water there in the form of ice. Lots of water. Does that mean there is no CO2 or that the gullies could not possible have been formed by CO2? It astounds me that you can so confidently say that even though 86% of the earth’s surface is covered by almost 5km of water it is impossible that it could have all been covered at some point because there isn’t enough water. Yet 95% of Mars’ atmosphere is CO2 and you insist that underground water ice is the only possible explanation.

But that’s why I like your posts Danny – you funny.

I know you are incapable of reading but for the others who might be interested in CO2 erosion on Mars:

http://sse.jpl.nasa.gov/whatsnew/pr/010330A.html

http://www.spacedaily.com/news/mars-water-science-00k1.html

http://www.idealibrary.com/servlet/doi/10.1006/icar.2000.6398

http://irian.geology.latrobe.edu.au/~nhoffman/Mars/

http://dsc.discovery.com/news/briefs/20010319/gullies.html

http://www.livefromspace.tv/mars_co2gullies.html

http://www.spaceflightnow.com/news/n0104/01co2gullies/

http://unisci.com/stories/20012/0402013.htm

http://www.spacer.com/news/lunarplanet-2001-01a4.html

http://users.bigpond.net.au/Nick/Mars/NH0.htm


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