Phoenix surface mission

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centsworth_II

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<p><font color="#666699"><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>So has Phoenix, actually observed fall out from the solar system's largest volcano??????<br /> Posted by 3488</DIV></font></p><p>I would guess that every handful of Mars' wind-blown surface material anywhere on the planet contains fallout from&nbsp; Olympus Mons.&nbsp; Whether one particular grain or another is from there is another question.&nbsp;</p> <div class="Discussion_UserSignature"> </div>
 
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exoscientist

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<p><font size="2"><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Regarding volcanic particles. I am not surprised, in fact I was expecting it, another of my predictions is coming true (another already proven are the squarish rather than hexagonal polygons).Scandia Colles near enough is due north of Tharsis & Olympus Mons in particular. The central caldera of Olympus Mons is approx 50 degrees or 2,961 KM / 1,839 miles due south of Phoenix. A long way, I know, but it was mentioned in the Media conference that ash can be transported thousands of KM. When Olympus Mons was active, the ash from the plume already had a 22 KM altitude head start & a southerly wind, picking it the particles as they descended, would have travelled very far to the north indeed. So has Phoenix, actually observed fall out from the solar system's largest volcano?????? Microscope view of particles. Dodo & Goldilocks trenches in colour.&nbsp; Also I have cropped out the same section, but in colour this time, of Due North, the martian North Pole being 1,303 KM / 809 miles north as the monochrome one on Wednesday or yesterday, can't remember now, getting stoooooooopid I am. 1,303 KM / 809 miles to the North Pole in colour. Weather for Sol 17. &nbsp;Sol 17 max: -26 C / -15 F. Sunny.Sol 17 min: -82 C / -116 F. Sunny.Pressure: 8.35 millibars.Wind: 14 KPH / 8.7 MPH from south east.Andrew Brown. <br />Posted by 3488</DIV></font></p><p><font size="2">&nbsp;&nbsp;Andrew, why did you conclude the polygons would be square rather than hexagonal?</font></p><p><font size="2">&nbsp;Also, in regard to the volcanic particles we had a discussion on this board about the possibility of small volcanic cones near the Phoenix landing site. This arose because of the puzzle of gypsum deposits found in the near polar region of Mars. Note also the light colored deposits seen in the trenches might be gypsum rather than ice.</font></p><p>&nbsp;</p><p><font size="2">&nbsp;&nbsp;&nbsp; Bob Clark</font><br /></p> <div class="Discussion_UserSignature"> </div>
 
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MarkStanaway

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<p><font size="2" color="#000000"><strong>When Olympus Mons was active, the ash from the plume already had a 22 KM altitude head start & a southerly wind, picking it the particles as they descended, would have travelled very far to the north indeed. </strong></font></p><p>Hi there</p><p>Does this mean that Olympus Mons has erupted fairly recently? I always thought the last eruptions were millions of years ago. Picking up ash particles on the surface of the Martian permafrost would seem to imply a fairly recent volvanic event.</p><p>Mark&nbsp;</p> <div class="Discussion_UserSignature"> </div>
 
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exoscientist

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<p><font size="2">&nbsp;Here's a high resolution version of the MECA image:</font></p><p><font size="2">http://www.nasa.gov/images/content/247290main_Sol017SiliconeMosaicComposite.jpg</font></p><p><font size="2">&nbsp;It was mentioned during the news conference that the cohesiveness extends down below the resolution of the microscope at 4 microns.<br />The clumps in the image give the impression of specks of mud.<br />It looks like just like in the case when the Malin/Edgett gullies were first discovered, Mars scientists are going to have to be dragged "kicking and screaming" to the liquid water interpretation.<br /><br /><br />Bob Clark&nbsp;</font></p><p>&nbsp;</p><p><br /><br />&nbsp;</p> <div class="Discussion_UserSignature"> </div>
 
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3488

Guest
<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>&nbsp;<font color="#ff0000">&nbsp;Andrew, why did you conclude the polygons would be square rather than hexagonal?&nbsp;Also, in regard to the volcanic particles we had a discussion on this board about the possibility of small volcanic cones near the Phoenix landing site. This arose because of the puzzle of gypsum deposits found in the near polar region of Mars. Note also the light colored deposits seen in the trenches might be gypsum rather than ice.&nbsp;&nbsp;&nbsp;&nbsp; Bob Clark <br /> Posted by exoscientist</font></DIV></p><p><font size="2"><strong>Hi Bob,</strong></font></p><p><font size="2"><strong>Yes I thought that prior to landing any polygons would be squarins rather than the more familiar hexagonal ones on Earth due to the ground temperature dropping to below -112 C / -170 F. At this point water ice crystals change from hexagons into cubes, hence my prediction of squarish polygons. When the vry first Phoenic images came dwm, a square polygon was clearly visible close to Phoenix as was others that tended to be four rather than six sided. <br /></strong></font></p><p><font size="2"><strong>&nbsp;Thanks for the reminder of arctic volcanic cones, I actually forgot about them & noticed how Phoenix was almost the same longitude as Olympus Mons, so came to the idea that southerly winds could bring volcanic particles, etc from that monster.</strong></font></p><p><font size="2"><strong>Andrew Brown</strong></font>.&nbsp;</p> <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>
 
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MeteorWayne

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<p>Summer seems to be moving along quite well; it's a heat wave! Todays high -11F, -24C; low -94F, -70C.</p><p>We mere humans might even be able to walk out during the afternoon and not run screaming inside (well, other than the lack of oxygen and atmospheric pressure). But temperature-wise, it's tolerable.....</p> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
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3488

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<p>[QUOTE<font color="#ff0000"><font color="#000000">]</font>Summer seems to be moving along quite well; it's a heat wave! Todays high -11F, -24C; low -94F, -70C.We mere humans might even be able to walk out during the afternoon and not run screaming inside (well, other than the lack of oxygen and atmospheric pressure). But temperature-wise, it's tolerable..... <br /> Posted by MeteorWayne</font>[/QUOTE]</p><p><font size="2"><strong>It does indeed Wayne, the highs are quite terrestrial & maybe you get Winter temperatures like that in NJ, with northerlies??</strong></font></p><p><font size="2"><strong>The minimum is still pretty cold though, more akin to Antarctica, but it is the warmest sol overall, since Phoenix arrived. Its 10 days now till the longest sol (Northern Summer Solstice) on Mars, it'll be interesting to see what happens then. Both the midsol & might un will be at their highest that sol (sol 28 - sol 29). </strong></font></p><p><font size="2"><strong>I wonder if Phoenix will measure a lag effect, with temperatures contining to rise after the longest sol, or if temeratures are actually linked to the daylight durations?</strong></font></p><p><font size="2"><strong>Here in Britain, we do not normally get out hottest days till mid August, some two months after the Summer Solstice.&nbsp; It'll be interesting to see if Phoenix oberves something similar. I suspect not. I think here the temperatures are related to daylight hours, as there are no bodies of liquid water to absorb, take time to warm up & radiate warmth.<br /></strong></font></p><p><font size="2"><strong>Interesting.</strong></font></p><p><font size="2"><strong>Andrew Brown.&nbsp;</strong></font></p> <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>
 
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MeteorWayne

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<p>Yes, I'm rather surprised about the rapid warmup, though I shouldn't be considering our 4 day steam wave. </p><p>It will be interesting to see the lag time, though 1 season (which isn't even a full year) is only a single data point.</p><p>While our average peak day is mid July, it can range from May to September in any given year.</p> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
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3488

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'><font color="#ff0000">Yes, I'm rather surprised about the rapid warmup, though I shouldn't be considering our 4 day steam wave. It will be interesting to see the lag time, though 1 season (which isn't even a full year) is only a single data point.While our average peak day is mid July, it can range from May to September in any given year. <br /> Posted by MeteorWayne</font></DIV></p><p><font size="2"><strong>Yes I too am quite surprised by the rapid warmup. The first few sols were virtual clones, now it is much more variable.</strong></font></p><p><font size="2"><strong>Occassionaly we may get the hottest day in June, though that is very rare indeed, more common in July, but but by far the most common in August & September.&nbsp; Apparently in 1963 was the last time it happened in May & in 1952 it did not come till 4th October, the latest recorded in Britain.<br /></strong></font></p><p><strong><font size="2" color="#000080">Sol 19 Azimuth 41.5 degrees.</font></strong><br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/4/11/2417e08c-5ba5-496d-bb33-ef6e157b616e.Medium.jpg" alt="" /></p><p><br /><font size="2" color="#000080"><strong>Sol 19, Azimuth 49.9 Degrees. </strong></font><br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/14/4/cecd530e-c42d-4bca-84b1-41a4e22091cb.Medium.jpg" alt="" /><br />&nbsp;</p><p><strong><font size="2" color="#000080">Sol 19, azimuth 297.8 degrees.</font></strong><br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/0/6/0029283f-6fd9-4b96-b6c1-8cfe0b2f0ac1.Medium.jpg" alt="" /><br />&nbsp;</p><p><font size="2" color="#000080"><strong>Sol 19, Azimuth 320 degrees.</strong></font><br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/11/13/6b3fe4a2-7275-449b-9da8-d027663dde6d.Medium.jpg" alt="" /></p><p><font size="2" color="#000080"><strong>Crop & blowup of central section of Azimuth 151.5 degrees showing a large boulder.</strong></font></p><font size="2"><strong>If Phoenix had landed on it, the landing would have faile</strong><strong>d. Ejecta from Heimdall Crater???</strong></font><br /><p><img src="http://sitelife.space.com/ver1.0/Content/images/store/5/13/5597f8ee-39c7-423c-bd86-29903dbc22e9.Medium.jpg" alt="" /></p><p><font size="2"><strong><font color="#000080">Sol 18, Azimuth 196.58 degrees.</font></strong></font><br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/15/7/cfae395a-ee4b-4911-87e5-4c2a77ccd6b0.Medium.jpg" alt="" /> </p><p><strong><font size="2" color="#000080">S</font></strong><font size="2" color="#000080"><strong>ol 18, Azimuth 199.84 degrees. </strong></font><br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/4/11/344aa491-0d75-402e-8b39-870b62804a6b.Medium.jpg" alt="" /><br /></p><p><font color="#000080"><strong><font size="2">Sol 18, Azimuth 210.56 degrees.</font></strong></font> <br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/3/0/6302b9cf-26b3-41a6-90d9-135381a46494.Medium.jpg" alt="" /><br />&nbsp;</p><p><strong><font size="2" color="#000080">Sol 18, Azimuth 219.06 degrees. </font></strong><br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/0/3/50d671df-18b6-44f8-b371-689ac0bda349.Medium.jpg" alt="" /><br />&nbsp;</p><p><font size="2"><strong><font color="#000080">Detail of Scandia Colles hills on horizon centred at 219.06 degrees.&nbsp;</font></strong></font></p><p><img src="http://sitelife.space.com/ver1.0/Content/images/store/10/2/faa8607d-69b8-4f7e-b2ed-0f10f328388d.Medium.jpg" alt="" /><br />&nbsp;</p><p><font size="2"><strong>Andrew Brown.&nbsp;</strong></font></p> <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>
 
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JonClarke

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>&nbsp;Here's a high resolution version of the MECA image:http://www.nasa.gov/images/content/247290main_Sol017SiliconeMosaicComposite.jpgIt was mentioned during the news conference that the cohesiveness extends down below the resolution of the microscope at 4 microns.The clumps in the image give the impression of specks of mud.It looks like just like in the case when the Malin/Edgett gullies were first discovered, Mars scientists are going to have to be dragged "kicking and screaming" to the liquid water interpretation.Bob Clark&nbsp;&nbsp;&nbsp; <br />Posted by exoscientist</DIV></p><p>Jumping to conclusions Bob.&nbsp; There is an enormous difference between large landforms with clear and obvious similarities to those formed by liquid water and inferring liquid water from the clumping of soils.&nbsp; There are many viable explanations at this stage, some much more viable that traces&nbsp;liquid water.&nbsp; </p><p>You really must try and curb this tendency to see everything as indicating liquid water, otherwise you are not really any different to the Hogalandites who see everything as pointing to ancient civilisations on Mars.</p><p>And you really should stop trying this constant casting of aspersions at the competence of the mission scientists and others, just because they think differently to you.</p><p>Jon</p><p>Jon</p> <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>
 
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MeteorWayne

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Jumping to conclusions Bob.&nbsp; There is an enormous difference between large landforms with clear and obvious similarities to those formed by liquid water and inferring liquid water from the clumping of soils.&nbsp; There are many viable explanations at this stage, some much more viable that traces&nbsp;liquid water.&nbsp; You really must try and curb this tendency to see everything as indicating liquid water, otherwise you are not really any different to the Hogalandites who see everything as pointing to ancient civilisations on Mars.And you really should stop trying this constant casting of aspersions at the competence of the mission scientists and others, just because they think differently to you.JonJon <br />Posted by jonclarke</DIV><br /><br />Indeed. There's nothing wrong with speculating, as long as you realize it is speculation.</p><p>The whole purpose of Phoenix is to answer these questions. Give it time to do it's job!</p> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
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MeteorWayne

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Hi Bob,Yes I thought that prior to landing any polygons would be squarins rather than the more familiar hexagonal ones on Earth due to the ground temperature dropping to below -112 C / -170 F. At this point water ice crystals change from hexagons into cubes, hence my prediction of squarish polygons. When the vry first Phoenic images came dwm, a square polygon was clearly visible close to Phoenix as was others that tended to be four rather than six sided. &nbsp;Thanks for the reminder of arctic volcanic cones, I actually forgot about them & noticed how Phoenix was almost the same longitude as Olympus Mons, so came to the idea that southerly winds could bring volcanic particles, etc from that monster.Andrew Brown.&nbsp; <br />Posted by 3488</DIV><br /><br />Interesting note on the ploygons in this week's Nature (in addition to a great 2 page blowup of the Phoenix over the crater shot). I hadn't heard of this elsewhere, so thougt I'd throw it in our data pool.</p><p>Using images from MRO, Mike Mellon of&nbsp;U of Colorado at Boulder had measured 915 polygons in Phoenix's landing area with an average diameter of 4.6 meters (or metres, since this is in Nature <img src="http://sitelife.space.com/ver1.0/content/scripts/tinymce/plugins/emotions/images/smiley-wink.gif" border="0" alt="Wink" title="Wink" />&nbsp;). The smallest were 2.5m across, although the limits of the MRO camera prevented identifying smaller ones.</p><p>When he modeled the ice cracking process, he calculated 5m would be a typical diameter (paper accepted in Journal of Geophysical Research). </p><p>Also evident was a fainter imprint of a larger polygon system which had troughs 22m apart and which could represent an earlier climactic epoch when Mars' axis was more tilted resulting in deeper ice.</p><p>The modeling made perfect sense until Phoenix images allowed scientists to measure two polygons at just 1.4 and 2.4m, much smaller than the 5 or 22m ones.</p><p>He hopes studies of the soil and ice parameters will help him adjust his models.</p><p>MW</p> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
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efron_24

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Jumping to conclusions Bob.&nbsp; There is an enormous difference between large landforms with clear and obvious similarities to those formed by liquid water and inferring liquid water from the clumping of soils.&nbsp; There are many viable explanations at this stage, some much more viable that traces&nbsp;liquid water.&nbsp; You really must try and curb this tendency to see everything as indicating liquid water, otherwise you are not really any different to the Hogalandites who see everything as pointing to ancient civilisations on Mars.And you really should stop trying this constant casting of aspersions at the competence of the mission scientists and others, just because they think differently to you.JonJon <br />Posted by jonclarke</DIV></p><p>sometimes I wish I was born 800 years from now.</p><p>If the Earth stays inhabitable.. imagine what we will know in 800 years</p><p>We have learned sooo much since 1900</p> <div class="Discussion_UserSignature"> </div>
 
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3488

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'><font color="#ff0000">Interesting note on the ploygons in this week's Nature (in addition to a great 2 page blowup of the Phoenix over the crater shot). I hadn't heard of this elsewhere, so thougt I'd throw it in our data pool.Using images from MRO, Mike Mellon of&nbsp;U of Colorado at Boulder had measured 915 polygons in Phoenix's landing area with an average diameter of 4.6 meters (or metres, since this is in Nature &nbsp;). The smallest were 2.5m across, although the limits of the MRO camera prevented identifying smaller ones.When he modeled the ice cracking process, he calculated 5m would be a typical diameter (paper accepted in Journal of Geophysical Research). Also evident was a fainter imprint of a larger polygon system which had troughs 22m apart and which could represent an earlier climactic epoch when Mars' axis was more tilted resulting in deeper ice.The modeling made perfect sense until Phoenix images allowed scientists to measure two polygons at just 1.4 and 2.4m, much smaller than the 5 or 22m ones.He hopes studies of the soil and ice parameters will help him adjust his models.MW <br /> Posted by MeteorWayne</font></DIV></p><p><font size="2" color="#000000"><strong>Thank you very Wayne, a very interesting post.</strong></font></p><p><font size="2" color="#000000"><strong>I am really fascinated by the area Phoenix has landed in, an incredible landscape, beuatiful, desolate but somehow is a story book revealing much about the martian past, probably in many respects, more so than the landing sites further south.</strong></font></p><p><font size="2" color="#000000"><strong>I must admit, my initial prediction of squarish polygons well before arrival, at the time may had seemed boneheaded (on the old closed thread), but on Sol 0, one of the very first post EDL images showed just that, a beautiful square polygon.&nbsp;</strong></font></p><p><font size="2" color="#000000"><strong>I beleive that you are correct, Phoenix will find evidence of the vastly varying axial tilt in the very remote past, before it somehow moderated (I have seen it suggested that Mars may had been on its side like Uranus at one point & bolt upright at another point).&nbsp;</strong></font></p><p><font size="2" color="#000000"><strong>I'm just off out to meet the over arf, from work, but will be back.</strong></font></p><p><font size="2" color="#000000"><strong>Andrew Brown.&nbsp;</strong></font></p> <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>
 
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silylene old

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>I must admit, my initial prediction of squarish polygons well before arrival, at the time may had seemed boneheaded (on the old closed thread), but on Sol 0, one of the very first post EDL images showed just that, a beautiful square polygon.&nbsp;...</p><p>.Andrew Brown.&nbsp; <br />Posted by 3488</DIV></p><p>&nbsp;</p><p>crap - I just wrote you a long, detailed post about this, then it deleted because I used&nbsp;the spell checker.</p><p>Let me summarize:</p><p>I really doubt that the phases ice 1c (squarish) and ice 1h (hexagonal) are related to the shapes of the polygons on the Martian surface.</p><p>When ice freezes it forms a collection of microcrystallites of random orientation fused on the crystal edges.&nbsp; It does not typically form a single perfect&nbsp;ice crystal a meter on edge.&nbsp; To form a crystal this big, you would need very perfect circumstances (water purity, lack of nucleation sites, controlled very slow growth, etc).</p><p>Polygon shapes in terran permafrost are not due to the ice wanting to freeze in a hexagonal form.&nbsp; Rather they form as a result of annual freeze-thaw cycles which create a slow thermal convection process at the polygon boundries.&nbsp; In a sense this is very much a modified Benard cell circulation.&nbsp; Please look up my thread on this subject in the old pre-Pluck SDC forums about 3 yrs ago for more information about Benard cell mechanisms.</p><p>I don't know even if the shape of the polygons on Mars is squarish.&nbsp; I would like to see a top-down photo map projected in Cartesian coordinates, with the photo contrast enhanced to make the polygon boundries easily visible.&nbsp; This could be constructed using software from the current photo images.&nbsp; Unfortunately, I still haven't seen this.&nbsp; Rather I have seen photos directly from the lander, or photos in a polar coordinate system centered on the lander.&nbsp; This perspective distorts shapes badly.&nbsp; If you have seen a top-down photo map constructed from the lander photos replotted using software ona square Cartesian grid, please let&nbsp; me know.</p><p>If indeed the Martian polygons are squarish, I don't know the mechanism.&nbsp; But the cause of putative squares is almost certainly not that ice 1c phase prefers to form square crystals.</p><p>You know, if we had a microscope with a polarized filter, then examination of original unscraped bulk ice surface would be easily able to see the ice microcrystallite boundries.&nbsp; This would be interesting!&nbsp; And if the microscope had a dark-field attachment, then by examination of original unscraped bulk ice we would be able to easily see the&nbsp;deeper phase boundries, and also embedded particles, air bubbles, and (if these existed) any putative embedded oil drops or putative organic matter.&nbsp; I don't know if we have such an attachment on the lander microscope, nor any capability to move the microscope next to a virgin unscraped ice surface.</p> <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>
 
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exoscientist

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>It does indeed Wayne, the highs are quite terrestrial & maybe you get Winter temperatures like that in NJ, with northerlies??The minimum is still pretty cold though, more akin to Antarctica, but it is the warmest sol overall, since Phoenix arrived. Its 10 days now till the longest sol (Northern Summer Solstice) on Mars, it'll be interesting to see what happens then. Both the midsol & might un will be at their highest that sol (sol 28 - sol 29). I wonder if Phoenix will measure a lag effect, with temperatures contining to rise after the longest sol, or if temeratures are actually linked to the daylight durations?Here in Britain, we do not normally get out hottest days till mid August, some two months after the Summer Solstice.&nbsp; It'll be interesting to see if Phoenix oberves something similar. I suspect not. I think here the temperatures are related to daylight hours, as there are no bodies of liquid water to absorb, take time to warm up & radiate warmth.Interesting.Andrew Brown.&nbsp; <br />Posted by 3488</DIV><br /><br />&nbsp;Thanks for that info about the Northern Solstice coming up.</p><p>&nbsp;I would also like to see some ground temperature readings released now as well. One of the Phoenix instruments&nbsp; determines actual ground temperatures and the thermal inertia of the soil. It's called the&nbsp;Thermal and Electrical Conductivity Probe (TECP). It's located on the Phoenix robot arm. It may be able to tell if there is liquid water on Mars.&nbsp;This page describes it:<br /><br />Sunning Frozen Soil.<br />Summary (Jul 21, 2006): The answer to the question about life on Mars may very well come from analyzing an unsuspecting source - the soil, specifically the icy layer of soil underneath the red planet's surface. By analyzing the properties of Mars frozen layer of soil during NASA s next lander mission, scientists will be able to better understand and theorize about life on Mars. <br />http://www.astrobio.net/news/modules.php?op=modload&name=News&file=article&sid=2028</p><p><br />&nbsp;&nbsp; Bob Clark</p><p>&nbsp;</p><p>&nbsp;</p> <div class="Discussion_UserSignature"> </div>
 
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MeteorWayne

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>It does indeed Wayne, the highs are quite terrestrial & maybe you get Winter temperatures like that in NJ, with northerlies??Posted by 3488</DIV><br /><br />For the record, the all time low temperature in NJ, is -34 degree Fahrenheit = -36.7 degree Celsius on Jan 5, 1904.</p><p>The coldest I can recall from my youth was about -15F.</p><p>Typically, over the last decade or two the winter low in NJ is about -10F.</p><p>&nbsp;</p><p>I do no meteor observing below 0 F (-18C), In fact my lowest observing temp ever was for this year's Quadrantids</p><p>with a temp of 12F, -11 C.</p><p>&nbsp;</p><p>Yes I'm a wimp!!!</p><p>&nbsp;</p><p class="inside-copy">The lowest ever recorded in the contiguous 48 States, was -69.7&deg;F&nbsp; (-56.5 degree Celsius) at Rogers Pass, in Lewis and Clark County, Mont., on Jan. 20, 1954. Rogers Pass is on State Highway 200 about 40 miles northwest of Helena. It is in mountainous and heavily forested terrain about one-half mile east of and 140 feet below the summit of the Continental Divide.</p><p class="inside-copy">The coldest temperature ever recorded east of the Mississippi River was -60&deg;F in Tower, Minn., on Feb. 2, 1996.</p><p class="inside-copy">Hawaii is the only state that's never recorded a below-zero temperature. </p> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
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earth_bound_misfit

Guest
How's the bun coming along? Any idea when the first batch will be finished being cooked? <div class="Discussion_UserSignature"> <p> </p><p> </p><p>----------------------------------------------------------------- </p><p>Wanna see this site looking like the old SDC uplink?</p><p>Go here to see how: <strong>SDC Eye saver </strong>  </p> </div>
 
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MeteorWayne

Guest
<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>How's the bun coming along? Any idea when the first batch will be finished being cooked? <br />Posted by earth_bound_misfit</DIV><br /><br />Preliminary results from the first (100C) bake might be discussed at tomorrow's 3PM EDT teleconference, assuming all went well. None of the pages have been updated yet since Friday.</p><p>The 1000C preliminary results should come a bit later in the week.</p><p>I expect tomorrow will also provide better MECA images (better focus).</p><p>MW</p> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
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earth_bound_misfit

Guest
Thanks Wayne! Looking forward to some results.<br /> <div class="Discussion_UserSignature"> <p> </p><p> </p><p>----------------------------------------------------------------- </p><p>Wanna see this site looking like the old SDC uplink?</p><p>Go here to see how: <strong>SDC Eye saver </strong>  </p> </div>
 
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MeteorWayne

Guest
<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Thanks Wayne! Looking forward to some results. <br />Posted by earth_bound_misfit</DIV><br /><br />Meee Toooooooo!</p><p>&nbsp;</p><p>Sol 16 Weather.</p><p>Hi Temp -24C (-11.2F) {That might not be too bad in the midday sun!}</p><p>Low Temp -70C (-94F)</p><p>Pressure down to 8.4 mb</p><p>(Note Sol 17 pressure is 8.35 mb; it's early morning Mars time.)</p><p>As expected, atmospheric pressure decreases as the atmosphere warms</p> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
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bearack

Guest
<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>&nbsp;crap - I just wrote you a long, detailed post about this, then it deleted because I used&nbsp;the spell checker.Posted by silylene</DIV><br /><br />I have learned that on long responses that I first compose it in word and then transfer it onto here because the same thing happened to me.&nbsp; It's when you highlight a misspelled word and hit delete.&nbsp; There is some sort of auto comand that is link to the back button.&nbsp; </p><p>And if you need to change a word entirely, highlight the word and type a letter.&nbsp; That will remove the word so you can change it.&nbsp; The pluck spell checker is something to be desired.</p><p>&nbsp;</p> <div class="Discussion_UserSignature"> <p><br /><img id="06322a8d-f18d-4ab1-8ea7-150275a4cb53" src="http://sitelife.space.com/ver1.0/Content/images/store/6/14/06322a8d-f18d-4ab1-8ea7-150275a4cb53.Large.jpg" alt="blog post photo" /></p> </div>
 
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brandbll

Guest
<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Meee Toooooooo!&nbsp;Sol 16 Weather.Hi Temp -24C (-11.2F) <br />Posted by MeteorWayne</DIV></p><p>Bah that's nothin.&nbsp; I go outside to smoke cigarettes in nothing more than jeans and a button down shirt in that kind of weather.&nbsp; What are the normal temperature readouts where the rovers are right now?<br /></p> <div class="Discussion_UserSignature"> <p><font size="3">You wanna talk some jive? I'll talk some jive. I'll talk some jive like you've never heard!</font></p> </div>
 
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efron_24

Guest
<p>Record low for the Netherlands was one night in March 2006</p><p>-22 celcius</p><p>and one week later is was + 24 celcius as spring started..</p><p>The largest temp difference in one week ever.</p><p>&nbsp;It is a time of records as climate seems to change</p> <div class="Discussion_UserSignature"> </div>
 
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centsworth_II

Guest
<font color="#666699"><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Hi Temp -24C (-11.2F) {That might not be too bad in the midday sun!}<br /> Posted by MeteorWayne</DIV></font><br />I wonder what the "feels like" temperature would be. <div class="Discussion_UserSignature"> </div>
 
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