Images of Mars -- Part Three

[rlb2]

Post deleted by rlb2 <div class="Discussion_UserSignature"> Ron Bennett </div>

 

[rlb2]

Post deleted by rlb2 <div class="Discussion_UserSignature"> Ron Bennett </div>

 

[Swampcat]

Oppy Sol 634. L2, L5 & L7 filters:<br /><br /> <div class="Discussion_UserSignature"> <font size="3" color="#ff9900"><p><font size="1" color="#993300"><strong><em>------------------------------------------------------------------- </em></strong></font></p><p><font size="1" color="#993300"><strong><em>"I hold it that a little rebellion now and then is a good thing, and as necessary in the political world as storms in the physical. Unsuccessful rebellions, indeed, generally establish the encroachments on the rights of the people which have produced them. An observation of this truth should render honest republican governors so mild in their punishment of rebellions as not to discourage them too much. It is a medicine necessary for the sound health of government."</em></strong></font></p><p><font size="1" color="#993300"><strong>Thomas Jefferson</strong></font></p></font> </div>

 

[Swampcat]

Oppy Sol 634 panorama. L2, L5 & L7 filters.<br /><br />Full size image<br />(5526x948, 948kb) <div class="Discussion_UserSignature"> <font size="3" color="#ff9900"><p><font size="1" color="#993300"><strong><em>------------------------------------------------------------------- </em></strong></font></p><p><font size="1" color="#993300"><strong><em>"I hold it that a little rebellion now and then is a good thing, and as necessary in the political world as storms in the physical. Unsuccessful rebellions, indeed, generally establish the encroachments on the rights of the people which have produced them. An observation of this truth should render honest republican governors so mild in their punishment of rebellions as not to discourage them too much. It is a medicine necessary for the sound health of government."</em></strong></font></p><p><font size="1" color="#993300"><strong>Thomas Jefferson</strong></font></p></font> </div>

 

[Swampcat]

Spirit Sol 648. L2, L5 & L6 filters.<br /> <div class="Discussion_UserSignature"> <font size="3" color="#ff9900"><p><font size="1" color="#993300"><strong><em>------------------------------------------------------------------- </em></strong></font></p><p><font size="1" color="#993300"><strong><em>"I hold it that a little rebellion now and then is a good thing, and as necessary in the political world as storms in the physical. Unsuccessful rebellions, indeed, generally establish the encroachments on the rights of the people which have produced them. An observation of this truth should render honest republican governors so mild in their punishment of rebellions as not to discourage them too much. It is a medicine necessary for the sound health of government."</em></strong></font></p><p><font size="1" color="#993300"><strong>Thomas Jefferson</strong></font></p></font> </div>

 

[Swampcat]

Spirit Sol 648. L4. L5 & L6 filters. <div class="Discussion_UserSignature"> <font size="3" color="#ff9900"><p><font size="1" color="#993300"><strong><em>------------------------------------------------------------------- </em></strong></font></p><p><font size="1" color="#993300"><strong><em>"I hold it that a little rebellion now and then is a good thing, and as necessary in the political world as storms in the physical. Unsuccessful rebellions, indeed, generally establish the encroachments on the rights of the people which have produced them. An observation of this truth should render honest republican governors so mild in their punishment of rebellions as not to discourage them too much. It is a medicine necessary for the sound health of government."</em></strong></font></p><p><font size="1" color="#993300"><strong>Thomas Jefferson</strong></font></p></font> </div>

 

[Swampcat]

Spirit Sol 650. L4, L5 & L6 filters. <div class="Discussion_UserSignature"> <font size="3" color="#ff9900"><p><font size="1" color="#993300"><strong><em>------------------------------------------------------------------- </em></strong></font></p><p><font size="1" color="#993300"><strong><em>"I hold it that a little rebellion now and then is a good thing, and as necessary in the political world as storms in the physical. Unsuccessful rebellions, indeed, generally establish the encroachments on the rights of the people which have produced them. An observation of this truth should render honest republican governors so mild in their punishment of rebellions as not to discourage them too much. It is a medicine necessary for the sound health of government."</em></strong></font></p><p><font size="1" color="#993300"><strong>Thomas Jefferson</strong></font></p></font> </div>

 

[Swampcat]

Spirit Sol 653. L2, L5 & L6 filters.<br /> <div class="Discussion_UserSignature"> <font size="3" color="#ff9900"><p><font size="1" color="#993300"><strong><em>------------------------------------------------------------------- </em></strong></font></p><p><font size="1" color="#993300"><strong><em>"I hold it that a little rebellion now and then is a good thing, and as necessary in the political world as storms in the physical. Unsuccessful rebellions, indeed, generally establish the encroachments on the rights of the people which have produced them. An observation of this truth should render honest republican governors so mild in their punishment of rebellions as not to discourage them too much. It is a medicine necessary for the sound health of government."</em></strong></font></p><p><font size="1" color="#993300"><strong>Thomas Jefferson</strong></font></p></font> </div>

 

[rlb2]

Post deleted by rlb2 <div class="Discussion_UserSignature"> Ron Bennett </div>

 

[rlb2]

Post deleted by rlb2 <div class="Discussion_UserSignature"> Ron Bennett </div>

 

[telfrow]

Thought I'd throw a Themis image in here if you don't mind....<br /><br /><b>Mars Odyssey Snaps Rabe Crater Contours</b><br /><br /><i>Rabe Crater lies among hundreds of thousands of other impact craters in the rough-hewn southern highlands of Mars. Spanning 108 kilometers (67 miles), Rabe is halfway between the martian equator and the south pole, and west of the giant impact basin Hellas.<br />Two features help set Rabe Crater (and several more in its vicinity) apart from most other craters on Mars. Rabe has a flat floor with a pit sunk into it, plus a large field of dunes. According to scientists, the two features may even be related.<br /><br />A pair of visible-wavelength images together with numerous infrared ones created this false-color THEMIS view that captures portions of both the pit and the dune field. The colors portray the overnight surface temperatures: bluer colors indicate cold places, redder tints warm ones. This helps scientists distinguish areas covered in fine-grain material, such as dust and sand, from those where harder and rockier ground stands exposed.<br /><br />The technique works because areas mantled in dust cool off quickly after sundown, while rocks hold onto daytime heat much better. When THEMIS looks down from orbit in the predawn hours, outcrops of bedrock are still glowing with warmth, while dusty ground has long since turned cold and dark.<br /><br />Edge of the Pit<br /><br /><br />The eroded edge of the crater's floor layer cuts diagonally across this image, its red color indicating exposed rocky material. Elsewhere within the big image, reddish colors trace other parts of this floor layer - for example, at the top and bottom right of the picture.<br /><br />The origin of the crater floor layer is unknown. Impact melt - rock liquified by the impact making Rabe Crater - or a sheet of ancient lava are both unlikely. The layer appears to erode more easily than lava or hardened impact melt, and its spectrum has a different mineral signature. More li</i> <div class="Discussion_UserSignature"> <strong><font color="#3366ff">Made weak by time and fate, but strong in will to strive, to seek, to find and not to yeild.</font> - <font color="#3366ff"><em>Tennyson</em></font></strong> </div>

 

[kateexelby]

It's truly breathtaking. The inevitable behaviour of the elements never cease to amaze me! <br /><br />So predictable and inevitable the entire story of evolution... Things happen because they HAVE TO, they have no other choice.

 

[rlb2]

Post deleted by rlb2 <div class="Discussion_UserSignature"> Ron Bennett </div>

 

[telfrow]

<font color="yellow">To me its almost like your seeing melting strawberry and chocolate ice crème.</font><br /><br />Great work rlb2. Thanks. And that's a perfect description...<img src="/images/icons/wink.gif" /> <br /> <div class="Discussion_UserSignature"> <strong><font color="#3366ff">Made weak by time and fate, but strong in will to strive, to seek, to find and not to yeild.</font> - <font color="#3366ff"><em>Tennyson</em></font></strong> </div>

 

[danajohnson0]

While there are a series of 'shoreline' benches, or shelves around most all of the exposed lower floor. there is a lack of runoff on the broad exposures as well. Without rainfall an ice layer would depress the floor by a variety of techniques and leave a level line similarly. What is intriquing me is that the lowest levels completely lack surface features and are continuous. Without the cause of a major crater rim here at that level something must be at work longer or more agressively throughout that area eroding the lowest level. The logic of a erosion preference for the lowest zone is flawed, as the dunes show. The level would be protected from erosion, and the southern highlands is at average too old for the topmost heavily cratered levels to be young. The large craters are rimmed and present at the topmost level- they would be recieving the same erosional exposure as the smoother lower level. If the lowest levels were flood basalt plains they would be less deep than the benched, shelved margins of the depression. The newest effect visible is an erosional preference at an area less exposed than the upper layers. This and other mysteries of Mars are an education in geology!<br />Ices or other activity across the southern hemisphere in the past, with a level marker set of lines in these deep basin-craters?<br />Related to this subject is the presence of apparent living and fossil items at the equator in MER rover photos. The objects were obviously alive over time, but what part of geologic time? Burrower objects, fungi, and algae can be seen at Mars Rover Blog(markcarey.com/mars) in the Mars Forums />Biology section. In particular currently is the topic " Sol_638_Op_burrows " images showing 'worm' burrowing in the layered Meridiani Plunum deposits. RAT exposure of the top layer has presented elaborate worm and 'cocoon' objects and hanging tendrils which appear flexible or alive. A possible source of the erosional process depending on the status over time. Different

 

[rlb2]

Post deleted by rlb2 <div class="Discussion_UserSignature"> Ron Bennett </div>

 

[silylene old]

two microcraters in that photo too <img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> <div class="Discussion_UserSignature" align="center"><em><font color="#0000ff">- - - - - - - - - - - - - - - - - - - - - -</font></em> </div><div class="Discussion_UserSignature" align="center"><font color="#0000ff"><em>I really, really, really miss the "first unread post" function.</em></font> </div> </div>

 

[rlb2]

Post deleted by rlb2 <div class="Discussion_UserSignature"> Ron Bennett </div>

 

[silylene old]

No, there are simply two of the enigmatic microcraters on those dunes.<br /><br />One microcrater is at 3:00 on the second dune from the front, a bit below the crest.<br /><br />The other microcrater is at 10:00 on a dune in the background.<br /><br />Funny how those microcraters are so omnipresent. Once you get sensitized to looking for them, you can't miss them. Either the wnid processes never fill them and thus they have accumulated over the eons, implying that bb-sized micrometeorites somehow don't burn up in the Martian atmosphere. Or maybe they form by some unusual sapping mechanism. <div class="Discussion_UserSignature"> <div class="Discussion_UserSignature" align="center"><em><font color="#0000ff">- - - - - - - - - - - - - - - - - - - - - -</font></em> </div><div class="Discussion_UserSignature" align="center"><font color="#0000ff"><em>I really, really, really miss the "first unread post" function.</em></font> </div> </div>

 

[rlb2]

Post deleted by rlb2 <div class="Discussion_UserSignature"> Ron Bennett </div>

 

[bonzelite]

i'm ever curious to see the extent of erosion and change that has happened upon the sites of the 2 Viking landers. i wonder if the MRO will be able to resolve those sites with any clarity. the then and now comparisons would at least give us some idea of the rate of enviromental change. or at least the potential for it in those specific areas. <br /><br />the rover tracks are great subjects of future study as well, ie, how quickly or slowly they disappear. maybe one of those micrometeorite impact sites will happen into some of the tracks.

 

[JonClarke]

I can see the first, closer one, but not the second. You sure its not a ripple crest?<br /><br />Jon <div class="Discussion_UserSignature"> <p><em>Whether we become a multi-planet species with unlimited horizons, or are forever confined to Earth will be decided in the twenty-first century amid the vast plains, rugged canyons and lofty mountains of Mars</em>  Arthur Clarke</p> </div>

 

[JonClarke]

Very pure sulphate or halite?<br /><br />That is the closer crater (assuming the more distant one is real as well).<br /><br />Incidently, if people can get of of it, the latest issue of Earth and Planetary Science letters is dedicated to the results from Endurance crater. I am reading them now, most interesting.<br /><br />Jon <div class="Discussion_UserSignature"> <p><em>Whether we become a multi-planet species with unlimited horizons, or are forever confined to Earth will be decided in the twenty-first century amid the vast plains, rugged canyons and lofty mountains of Mars</em>  Arthur Clarke</p> </div>

 

[Swampcat]

<font color="yellow">"Do other people get the same thing I do? I used L4,L5,L6 they are white even with L2,L5,L6 filters."</font><br /><br />No. <br /><br />IMHO, rlb2, your images generally have too much blue in them. Below are my versions of this same set of raw images using different filters for red. The whiteness of the brighter areas is a function of the proportion of blue used in the composite.<br /><br />BTW, I don't know how others feel, but I would rather not have to scroll across to read the occasional text post. Could you please restrict image width to less than about 700 px? I generally use 650px and provide a link to the full size image if appropriate. <div class="Discussion_UserSignature"> <font size="3" color="#ff9900"><p><font size="1" color="#993300"><strong><em>------------------------------------------------------------------- </em></strong></font></p><p><font size="1" color="#993300"><strong><em>"I hold it that a little rebellion now and then is a good thing, and as necessary in the political world as storms in the physical. Unsuccessful rebellions, indeed, generally establish the encroachments on the rights of the people which have produced them. An observation of this truth should render honest republican governors so mild in their punishment of rebellions as not to discourage them too much. It is a medicine necessary for the sound health of government."</em></strong></font></p><p><font size="1" color="#993300"><strong>Thomas Jefferson</strong></font></p></font> </div>

 

[rlb2]

Post deleted by rlb2 <div class="Discussion_UserSignature"> Ron Bennett </div>