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List of evidence for water on Mars
pumpkinpie
post Feb 5 2013, 04:59 PM
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Does there exist a list of all the evidence of water on Mars, listed by spacecraft?

Ideally, it would be a list with a short description and a link to a story or news release. For example:

Mars Global Surveyor: NASA Images Suggest Water Still Flows in Brief Spurts on Mars http://www.nasa.gov/mission_pages/mars/new...s-20061206.html
Phoenix: NASA Spacecraft Confirms Martian Water, Mission Extended http://www.nasa.gov/mission_pages/phoenix/...x-20080731.html
Opportunity: NASA Mars Rover Finds Mineral Vein Deposited by Water http://www.nasa.gov/mission_pages/mer/news/mer20111207.html

I know I could spend some time and extend the list that I've started above, but if someone or some organization has already done it I'd hate to reinvent the wheel!

Thank you.
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serpens
post May 9 2019, 12:48 AM
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The linked Planetary Society blog article provides an interesting read on the faint young sun paradox with respect to long lived surface water on early Mars and puts to bed some of the hypothetical explanations. However the article did miss the hypothesis that the solar system transiting through interstellar dust clouds could have the effect of significantly increasing the sun's output through the capture of molecular hydrogen. That hypothesis has always made a lot of sense to me.

http://www.planetary.org/blogs/guest-blogs...le-paradox.html
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HSchirmer
post Jun 19 2019, 05:05 PM
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QUOTE (serpens @ May 9 2019, 01:48 AM) *
The linked Planetary Society blog article provides an interesting read on the faint young sun paradox with respect to long lived surface water on early Mars and puts to bed some of the hypothetical explanations. However the article did miss the hypothesis that the solar system transiting through interstellar dust clouds could have the effect of significantly increasing the sun's output through the capture of molecular hydrogen. That hypothesis has always made a lot of sense to me.

http://www.planetary.org/blogs/guest-blogs...le-paradox.html


I saw two recent papers/references that seem relevant, or at least interesting.

FIRST, was a paper on the 11/22 year solar cycle and Jupiter (yes, related to the barycenter theory) which looked at
the 11.07 year cycle of solar atmospheric tides that results from Venus-Earth-Jupiter orbital resonances.



So, let's consider that Theory #1 the "solar cycle / planetary barycenter theory" might be correct
well,
let's consider that Theory #2 "Nice-Model" might be correct as well.

In that case, the early Sun had 4 gas giants between ~5 AU and ~17 AU.
Resonances would have driven massive solar dynamo effects.

Basically, if you have 4 gas giants on circular orbits within ~17 AU, you have tides stirring the Sun and stoking the fire.

SECOND is a combination of idea, the mention of lunar GRAIL data that the lunar surface is roughly 15% void space for the first few kilometers, and a review that the breccia and impact melt under Gale crater could be 17 km deep (for comparision, the Marianas Trench on earth is ~11 km deep) with an initial void space of 3,600 cubic kilometers.
This suggests that there is plenty of "space" for liquid water to exist in the Martian subsurface.
That implies that the real trick about water on the surface of Mars is keeping it from draining back down into the regolith.

Perhaps we only see Martian rivers when they run across compacted sediments or permafrost, otherwise, the water quickly soaks into the sand and gravel.

Flip the thinking to view rivers on the surface of Mars more like the meltwater channels on the top of a glacier, as soon as they encounter a lens of clean sand or a crack, they are gone.

https://phys.org/news/2018-01-glacial-mouli...ered-rapid.html

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Posts in this topic
- pumpkinpie   List of evidence for water on Mars   Feb 5 2013, 04:59 PM
- - elakdawalla   It would be a long list. Don't look for press ...   Feb 5 2013, 05:09 PM
- - pumpkinpie   Thanks for the reply! I think I should have ...   Feb 5 2013, 06:10 PM
|- - JRehling   There are a few different parts of the answer, bro...   Feb 6 2013, 06:15 PM
|- - pumpkinpie   Simple, but very helpful! Thanks!   Feb 6 2013, 07:57 PM
|- - mcaplinger   QUOTE (JRehling @ Feb 6 2013, 11:15 AM) T...   Feb 6 2013, 08:01 PM
|- - mwolff   QUOTE (mcaplinger @ Feb 6 2013, 02:01 PM)...   Feb 8 2013, 03:36 PM
|- - JRehling   On a meta-level, I recall that Earth-based spectro...   Feb 8 2013, 07:56 PM
|- - mcaplinger   QUOTE (JRehling @ Feb 8 2013, 12:56 PM) ....   Feb 8 2013, 08:35 PM
|- - mwolff   QUOTE (JRehling @ Feb 8 2013, 01:56 PM) O...   Feb 10 2013, 03:28 PM
|- - JRehling   Speaking just to the spectroscopic detection of H2...   Feb 12 2013, 12:17 AM
- - elakdawalla   This sounds like a pitch for a magazine article. I...   Feb 5 2013, 06:36 PM
- - nprev   IIRC, they did the same around the same time for t...   Feb 6 2013, 10:58 PM
- - ElkGroveDan   ADMIN HAT ON Let's be clear here everyone bef...   Feb 10 2013, 05:01 PM
- - belleraphon1   There was a conference earlier this month at UCLA ...   Feb 28 2013, 11:55 AM
- - marsbug   Pardon the thread necromancy, but this seems like ...   Jul 3 2014, 11:12 PM
- - serpens   Not even mildly damp. With 1 to 2% of perchlorate...   Jul 4 2014, 07:52 AM
- - marsbug   There's certainly nothing to forgive, I think ...   Jul 4 2014, 04:19 PM
- - TheAnt   Studies done at Niels Bohr institute in Copenhagen...   Apr 9 2015, 11:43 AM
- - marsbug   This makes me wonder: If ice, at a lattitude and a...   Apr 9 2015, 04:21 PM
|- - TheAnt   On Earth you will often find water under a glacier...   Apr 10 2015, 09:09 AM
- - serpens   A glacier is by definition dynamic. So are they c...   Apr 12 2015, 12:41 AM
|- - TheAnt   QUOTE (serpens @ Apr 12 2015, 02:41 AM) I...   Apr 17 2015, 10:36 AM
|- - katodomo   QUOTE (TheAnt @ Apr 17 2015, 12:36 PM) Gl...   Apr 17 2015, 07:08 PM
- - Fran Ontanaya   "Transient liquid water and water activity at...   Apr 13 2015, 07:26 PM
|- - katodomo   EGU 2015 Press Conference 5: "Water Signature...   Apr 14 2015, 01:32 PM
- - scalbers   Will Monday's announcement be about further wa...   Sep 26 2015, 06:10 PM
|- - dolphin   Rumor suggests a discovery of flowing water. I wou...   Sep 27 2015, 06:03 AM
- - nprev   If that has any validity it would probably be a re...   Sep 27 2015, 06:39 AM
|- - dolphin   QUOTE (nprev @ Sep 27 2015, 06:39 AM) If ...   Sep 27 2015, 08:16 AM
- - drz1111   Just like the Atacama. Cool that it happens at th...   Sep 28 2015, 03:15 PM
- - dudley   Clear evidence of liquid water on Mars' surfac...   Sep 28 2015, 05:38 PM
- - scalbers   The lowered melting point in the presence of perch...   Sep 28 2015, 06:00 PM
|- - JRehling   Some rather acrobatic surface missions that we mig...   Sep 28 2015, 06:12 PM
|- - Gsnorgathon   A loooong time ago I saw an item somewhere on the ...   Sep 28 2015, 06:48 PM
|- - stevesliva   QUOTE (Gsnorgathon @ Sep 28 2015, 01:48 P...   Sep 28 2015, 08:50 PM
- - dudley   There seems to be a good deal of concern that visi...   Sep 28 2015, 07:19 PM
- - marsophile   In this morning's press conference on Recurren...   Sep 28 2015, 07:39 PM
- - ElkGroveDan   QUOTE Ojha first noticed these puzzling features a...   Sep 28 2015, 08:06 PM
- - Steve G   Will someone please correct me if I am wrong. Eit...   Sep 28 2015, 08:17 PM
- - elakdawalla   MGS found slope streaks; recurring slope lineae ar...   Sep 28 2015, 08:18 PM
- - gpurcell   Seems to me a reasonably priced approach could be ...   Sep 28 2015, 09:31 PM
- - atomoid   I was also confused about the RSL vs 'slope st...   Sep 28 2015, 10:19 PM
- - dolphin   Am I missing something? Why would briny perchlorat...   Sep 28 2015, 10:22 PM
- - brellis   One of the blurbs alluded to the possibility of an...   Sep 28 2015, 10:36 PM
|- - JRehling   My sense is: The subsurface ice layer (as seen un...   Sep 28 2015, 11:43 PM
- - serpens   I have to admit to being a touch underwhelmed by t...   Sep 29 2015, 02:45 AM
- - pac56   I think the news is they did spectral analysis of ...   Sep 29 2015, 06:17 AM
- - marsbug   I'd point towards Emily's blog as well. WR...   Sep 29 2015, 08:59 AM
- - dvandorn   It seems to me that the confirmation of liquid wat...   Sep 29 2015, 03:15 PM
|- - surbiton   QUOTE (dvandorn @ Sep 29 2015, 04:15 PM) ...   Sep 29 2015, 04:11 PM
|- - JRehling   QUOTE (dvandorn @ Sep 29 2015, 08:15 AM) ...   Sep 29 2015, 04:36 PM
- - marsophile   http://www.hou.usra.edu/meetings/lpsc2015/pdf/2327...   Sep 30 2015, 02:51 AM
- - Explorer1   The fact that these features are spread out over s...   Sep 30 2015, 03:50 AM
|- - JRehling   I think there are lots of ways to study/sample the...   Sep 30 2015, 05:00 PM
- - serpens   JRehling's post #47 proposing the water source...   Oct 1 2015, 04:45 AM
- - Explorer1   'Fluidizing agent found on Mars' doesn...   Oct 1 2015, 04:51 AM
- - serpens   This makes for rather interesting reading. http...   May 20 2016, 08:14 AM
- - marsbug   The question marks around the RSL's are growin...   Aug 24 2016, 11:38 AM
- - serpens   Well Spirit at Tyrone demonstrated that a thin lay...   Aug 27 2016, 03:14 AM
- - Julius   A study published discussing inverted river channe...   Aug 29 2016, 08:12 PM
- - serpens   The linked Planetary Society blog article provides...   May 9 2019, 12:48 AM
- - HSchirmer   QUOTE (serpens @ May 9 2019, 01:48 AM) Th...   Jun 19 2019, 05:05 PM


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