Ephemeral atmospheres

Space/Science » in reply to re: Study Reveals Young Mars Was A Wet World

Ephemeral atmospheres

nick hoffman — 4/21/2006 8:01:33 AM (archived)

My modelling agrees that in this early era Mars would have been wet and mild, but not all the time. Only after giant impacts had stirred-up the atmosphere and boiled off the volatiles (CO2 and H20) would there be an atmosphere for a few thousands or tens of thousands of years, then it would collapse again and wait for the next giant impact - and no, there weren't enough of them to string together into a continuous mild/warm/wet epoch.

Trouble is, we don't "see" the mineralogical record of the pauses between the warm bits because the planet was in deep freeze - but not for so long as the Post 3.5 Ga freeze whid HAS had mineralogical consequences...

I'm really pleased to see a *sensible* piece of Mars research released without too much hype and without inflation of the very limited role of water in the Red Planet's history.

Next Year's LPSC will be a good one. Maybe I'll come over for the show? I could even do a bit of work for it...

The whole thread (37 posts)

Study Reveals Young Mars Was A Wet World - Chris Vancil - 4/20/2006 10:30:21 PM
- Not surprised - Donald - 4/21/2006 4:19:54 AM
  - re: Not surprised - Chris Vancil - 4/21/2006 5:25:10 AM
    - re: Not surprised - Donald - 4/21/2006 12:39:00 PM
  - If I may... - Donald - 4/21/2006 4:47:57 AM
    - re: If I may... - Robert Clark - 4/21/2006 11:09:02 PM
    - re: If I may... - Chris Vancil - 4/21/2006 5:43:17 AM
      - Actually, I think that's improbable - nick hoffman - 4/21/2006 7:55:54 AM
        
        re: Actually, I think that's improbable - Chris Vancil - 4/21/2006 2:36:38 PM
        
        I Beg to differ - nick hoffman - 4/21/2006 8:42:36 PM
        
        re: I Beg to differ - Chris Vancil - 4/21/2006 9:13:10 PM
        
        Instead of hoping for weak little Earth-like creatures just barely surviving under some Martian rock... - ljk - 4/21/2006 5:08:00 PM
        
        re: Instead of hoping for weak little Earth-like creatures just barely surviving under some Martian rock... - Marcia - 4/22/2006 2:45:26 AM
        
        Of course they survive... - Adam - 4/25/2006 9:31:24 PM
        
        re: We work from what we know to what we can imagine (unless we are writing SF). - Chris Vancil - 4/21/2006 8:52:59 PM
        
        re: We work from what we know to what we can imagine (unless we are writing SF). - Robert Clark - 4/21/2006 10:48:14 PM
        
        re: Instead of hoping for weak little Earth-like creatures just barely surviving under some Martian rock... - Lance - 4/21/2006 7:33:50 PM
- re: Study Reveals Young Mars Was A Wet World - phil - 4/21/2006 2:23:15 AM
  - Ephemeral atmospheres - nick hoffman - 4/21/2006 8:01:33 AM
    - re: Ephemeral atmospheres - gbaikie - 4/21/2006 1:45:30 PM
      - It's a bit more complicated than that... - nick hoffman - 4/21/2006 8:38:42 PM
        
        re: It's a bit more complicated than that... - gbaikie - 4/22/2006 1:40:22 AM
  - re: Comets shower - Raoul - 4/21/2006 5:46:53 AM
    - re: Comets shower - Marcia - 4/22/2006 2:56:57 AM
  - re: Study Reveals Young Mars Was A Wet World - Chris Vancil - 4/21/2006 5:35:22 AM
    - re: Study Reveals Young Mars Was A Wet World - Marcia - 4/22/2006 3:00:18 AM
    - Solar mass loss models - Adam - 4/21/2006 11:59:35 AM
      - Reference... - Adam - 4/21/2006 12:48:09 PM
- re: Study Reveals Young Mars Was A Wet World - bruced - 4/20/2006 11:52:24 PM
  - re: Study Reveals Young Mars Was A Wet World - Thanks! - Marcia - 4/22/2006 3:12:22 AM
    - re: Study Reveals Young Mars Was A Wet World - Thanks! - Marcia - 4/22/2006 3:26:55 AM
- Yes, battery acid is "wet".... - Jacob Samorodin - 4/20/2006 11:06:09 PM
  - re: Yes, battery acid is "wet"...snottites. - andrew - 4/26/2006 5:57:36 PM
  - re: I can only surmise you didn't happen to read the article. (n/t) - Chris Vancil - 4/21/2006 5:32:44 AM
    - Life-Marker Chip Planned For ESA Mars Lander - ljk - 4/25/2006 2:39:41 PM
      - re: Pretty cool...thanks! (n/t) - Chris Vancil - 4/27/2006 6:49:09 AM
        
        Astrobiology Strategy for the Exploration of Mars Conference in Washington, D.C. on May 10-12, 2006 - ljk - 4/28/2006 6:30:02 PM

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