Dust Devils of the '07 season |
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Dust Devils of the '07 season |
 Jun 5 2007, 07:27 PM
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#46
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 Senior Member  Group: Moderator Posts: 3173 Joined: 11-August 04 From: USA Member No.: 98  |
Now this is a really nit-picky point but, is the DD in the movie going the right direction? It's shown going north or east; I thought they usually went more or less the other way. I could be wrong - perhaps they can go whichever way they want to. Anyway, great movie, Astro0.
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Jun 6 2007, 03:39 AM
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#47
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 Senior Member Group: Members Posts: 2248 Joined: 15-January 05 From: center Italy Member No.: 150 |
Beautiful (and big) DD on Sol 1215:
Attached thumbnail(s)
-------------------- - Marco -
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Jun 19 2007, 05:22 AM
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#48
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Member Group: Admin Posts: 466 Joined: 11-February 04 From: USA Member No.: 21 |
I just posted up an update to my dust devil page.
Sol 1204 was a lucky movie, catching a tall dust devil showing fine structure right from the start of the movie (when frames are the quickest). Sol 1215 shows another tall dust devil, this one heading straight in towards Spirit (although it does appear to grow more diffuse as it comes...it might not have made it all the way to the hills). Sol 1217 is a bit different. The fourth frame shows a diffuse 'ghost' of a dust devil passing by on the left side of the frame. It could just be one that was very nearby, or it could just be a disorganized shell of a dust devil blowing by. It reminded me of the close pass in front of the rover we saw back on Sol 568. The sol 1215 and 1217 movies might still have more frames coming down. |
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Jun 20 2007, 06:12 AM
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#49
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Senior Member Group: Members Posts: 2248 Joined: 15-January 05 From: center Italy Member No.: 150 |
Another great DD on Sol1230:
Attached thumbnail(s)
-------------------- - Marco -
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Jun 21 2007, 08:11 AM
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#50
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 Senior Member Group: Members Posts: 1116 Joined: 12-February 06 From: Marseille - FR Member No.: 678 |
And the same, in anaglyph
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Jun 28 2007, 10:05 AM
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#51
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Senior Member Group: Members Posts: 1116 Joined: 12-February 06 From: Marseille - FR Member No.: 678 |
A distant dust devil near Grissom Hill on Sol 1235 :
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Jul 11 2007, 08:19 PM
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#52
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 Senior Member Group: Members Posts: 1620 Joined: 20-November 04 From: Iowa Member No.: 110 |
This one looks close, rear hazcan 1250
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Jan 23 2008, 02:30 AM
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#53
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Member Group: Admin Posts: 466 Joined: 11-February 04 From: USA Member No.: 21 |
Even though the '07 dust devil season didn't yield a large number of impressive new navcam movies, it was still a very active year. MRO's CTX PDS archive has thorough coverage of Gusev Crater through the entire season, showing some very dramatic changes.
Here is a cropped animation of 3 CTX images (roughly calibrated, then stretched) showing changes from December 12, 2006 (Spirit sol 1045) through May 27, 2007 (Spirit sol 1207, slightly before beginning of the dust storm). The third image actually captured an active dust devil slightly to the east of the south edge of the Columbia Hills!  High res (2x downsampled from CTX original) Source images: P02_001777_1653_XI_14S184W.IMG P05_003122_1653_XI_14S184W.IMG P07_003900_1653_XI_14S184W.IMG The 3 images above barely scratch the surface of what's available. There are 11 or so images taken in only 6 months time that cover that area. Stay tuned... |
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Jan 23 2008, 03:35 AM
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#54
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 Senior Member Group: Moderator Posts: 2606 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
QUOTE (slinted @ Jan 22 2008, 09:30 PM)  The 3 images above barely scratch the surface of what's available. There are 11 or so images taken in only 6 months time that cover that area. Stay tuned... Wow! Beautiful work. It amazing to see how the track pattern changes as the season progresses, and to watch how some of the initial tracks get wiped out. (Like that one in the top right.) I think I stared at the animation mesmerized for a good ten minutes. Thank you for posting this! -Mike -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Jan 23 2008, 06:03 AM
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#55
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 Senior Member Group: Members Posts: 2164 Joined: 1-December 04 From: Marble Falls, Texas, USA Member No.: 116 |
Ditto, Juramike. I was mesmerized, too. I'm staying tuned.
-------------------- ...Tom (thinks he should use more emoticons)
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Jan 23 2008, 10:19 AM
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#56
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 Member Group: Members Posts: 275 Joined: 11-December 07 From: Dar es Salaam, Tanzania Member No.: 3978 |
Slinted-Your MRO animation is superb, magnefique.
The images seem to indicate the presence of local monsoonal winds. i.e the 2nd image shows the DD trails oriented toward NE. The 3rd image shows all the DD trails suddenly oriented toward SE. -------------------- |
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Jan 23 2008, 10:31 AM
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#57
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 Special Cookie Group: Members Posts: 2149 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
Great work slinted!
 On the May27 image, to the west of the hills, near the bottom of the image in a crater, what is that? a huge DD caught in action? Or is it an artifact? EDITED: A DD I guess, it has some shadow associated...beautiful work! -------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
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Jan 23 2008, 10:41 AM
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#58
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 Senior Member Group: Moderator Posts: 2127 Joined: 9-February 04 From: UK Member No.: 16 |
To the EAST of the hills you mean? Looks like a nice DD caught in action to me, nice.
-------------------- My MER & MSL Imagery site - Martian Vistas ---- Twitter Feed (including sol by sol updates on Opportunity's activity)
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Jan 23 2008, 10:59 AM
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#59
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Special Cookie Group: Members Posts: 2149 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
QUOTE (jamescanvin @ Jan 23 2008, 10:41 AM) To the EAST of the hills you mean? Looks like a nice DD caught in action to me, nice. You know what I mean... A nice and BIG one indeed... -------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
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Jan 23 2008, 12:26 PM
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#60
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Senior Member Group: Moderator Posts: 2606 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
(more staring at animation)
Interesting how tracks seem to cross the northern hills, and some craters. But they don't seem to cross the larger hills. Don't know if dust devils are disrupted by the higher terrain, or if the higher terrain landscape doesn't show tracks. -Mike -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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