Water on Mars - Page 6

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John Henry Dough


Posts: xxx

Reply: 101



PostPosted: August 12, 2011 11:29 AM 

Serpens
No it was not me Serpens,,who posted under
the name anySerpen,,,,I would NEVER slander
anyone here,,,,and the post above it,,,about red rain is just bullshit,,,AGAIN,,I posted that in error.
Serpens,,,you are one of many strong voices
here.We (the Forum) needs your input daily,,,,on ALL subjects.
You are much respected Sir.
Case closed.

John Henry Dough


Posts: xxx

Reply: 102



PostPosted: August 12, 2011 1:24 PM 

And if I might add too that,,,That it was a cowardly,,underhanded,,,thing to do,,not to speak of being evil,,,ie:it really takes an asshole to write over another mans name,so,,,,either a prank ( I assume Sir,,that it was),,,,,or somebody who really,really don't like you.If the last case,,,then I can easily run out of fingers and toes,,counting the ones who don't like me,,HA!
So I would not over worry,,,were I you.
Like I said,,,We need you here.Everyday,Along with BS,Hort 'rover disturbed rock')(the name of which frigging escapes me!!Fred ,John,Kevin,Kye,,,so please don't stop posting to us.
I was slightly concerned that you miss-read,,
my botched up cut and paste to the ''bad place,,superstitious red rain bullshit.....i confess to not reading the link before hitting send,
Shit happens
Back to Mars.

John Henry Dough


Posts: xxx

Reply: 103



PostPosted: August 12, 2011 1:29 PM 

shuckd &*^%*&^%
another messed up post......there is no preview,,,and again what i see is NOT
how i wrote it.
I giveup,,,,
just for today.
Lets see how this is formatted AFTER i hit send

send

Barsoomer


Posts: 344

Reply: 104



PostPosted: August 18, 2011 11:36 AM 

link

Barsoomer


Posts: 344

Reply: 105



PostPosted: August 18, 2011 3:25 PM 

http://www.uahirise.org/ESP_019033_2495

Frosted Gullies in the Northern Summer on Mars HIRISE

Barsoomer


Posts: 344

Reply: 106



PostPosted: August 18, 2011 3:26 PM 

Horton, can you free one of my two attempts to post a new item here? Thx.

MPJ


Posts: 250

Reply: 107



PostPosted: August 19, 2011 5:47 AM 

Re104/105: interesting observation and more evidence for a current low level atmospheric water cycle on Mars.

Another interesting question arises of what is happening with the frost on the southern sides of those slopes and the level surface (which is most properly accumulating over the night there as well - remember the Viking images) when it gets warmer in the morning/during the day.

If the frost in shadows is stable (as of not melting/sublime) during the day - HiRISE observations are normally taken on local mid afternoon - would it be that far fetched to theorize some of it would trickle into the rocks/soil as liquid before evaporating?

MPJ


Posts: 250

Reply: 108



PostPosted: September 29, 2011 4:25 PM 

Wetter Mars Atmosphere Shakes Up Old Climate Models:

[link]

LWS


Posts: 3062

Reply: 109



PostPosted: September 29, 2011 4:44 PM 

So those rat holes that looked as if they were moist could have indeed held moisture.

The ratting process at meridiani that showed greater than expected resistance might have been due to wetness rather than the sparse concretions seen and many of which were cleanly cut by the RAT without being torn from the soft evaporites.

Those areas of the soil that looked damp and muddy might have been indeed so.

The strange cohesion might have been from microbial binding of the soil grains.

Perhaps the scientists should believe their eyes rather than letting inappropriate instruments make them come up with theories that eventually will not hold water.

Winston

Kevin Author Profile Page



Posts: no

Reply: 110



PostPosted: September 30, 2011 4:26 AM 

More on #108

Mars never ceases to surprise, we never stop learning and the possibilities never ending.

[link]

dx


Posts: 1661

Reply: 111



PostPosted: October 1, 2011 1:50 AM 

...with all the driving conditions that Oppy has driven over in the last 7.9 years it's tires remain dry!!!

Why is that?

yt
dx

Fred


Posts: 73

Reply: 112



PostPosted: October 1, 2011 2:40 AM 


Tires can dry after being dampened or wet.

Water is not stable for long in Earth desserts. I doubt it would remain for long on Mars.

I hope this answers your complex question.


Barsoomer


Posts: 344

Reply: 113



PostPosted: October 20, 2011 1:47 PM 

link

The "argon clock" in the mineral jarosite.

Wm. McCall


Posts: xxx

Reply: 114



PostPosted: October 22, 2011 2:46 AM 

If I am out of line with this posting, please forgive me. I have an idea about what happened to Mars' oceans and wrote about it in:

http://www.amazon.com/dp/B005VU75FM

In the afterword there are links to some data that I've amassed over the years.

Barsoomer


Posts: 344

Reply: 115



PostPosted: October 23, 2011 2:59 PM 

link

Interesting paper. It is behind a paywall, but the abstract can be seen by clicking on the 'show preview" button.

The paper suggests that most of the valley networks were formed during a narrow part of the history of Mars lying at the boundary between the Noachian and Hesperian eras, between 3.6 and 3.8 billion years ago.

Ben


Posts: 2270

Reply: 116



PostPosted: October 23, 2011 3:59 PM 

Thanks Barsoomer; This article confirms my view of a short period during which vigorus fluvial activity was active on Mars.

I favor the idea of a melting ice-cap for the water source , followed by a warmer period with precipitation and then a return to a cold ,arid climate with periodic high winds.
During this latter time surface water disappeared and ground water was left frozen below the surface.

Barsoomer


Posts: 344

Reply: 117



PostPosted: October 24, 2011 12:56 AM 

Interesting, Ben. Any idea what caused the ice-cap to melt? A massive im pact? Shifting of the poles? Volcanic eruptions?

Ben


Posts: 2270

Reply: 118



PostPosted: October 24, 2011 1:05 PM 

Barsoomer; Actually I don't think we have any evidence for the cause but it may have been a massive increase in atmospheric CO2
which some believe ended earth's last glacial period.

Barsoomer


Posts: 344

Reply: 119



PostPosted: October 24, 2011 1:49 PM 

Thanks, Ben. A buildup of atmospheric CO2. In that case, what would have ended the 200 million year period? Maybe conversion of atmospheric CO2 into O2 by cyanobacteria?

MPJ


Posts: 250

Reply: 120



PostPosted: October 26, 2011 3:50 AM 

Something for Fred?
Mars Climate Sounder confirms a Martian weather prediction:
http://www.planetary.org/blog/article/00003234/

So a temperature inversion cause (water ice) clouds to build up high during the night and decent to the ground by morning - poor rocks/soil get a little in the morning!? Wink

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