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djellison
post Dec 24 2005, 06:15 PM
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New SS Update - "December 23, 2005

Things have been going well at Gusev. We've spent most of the past week looking at a rock right next to Comanche that we call Comanche Spur. Like everything we've seen since we've descended off of Haskin Ridge, Comanche Spur has undergone very little alteration and has a lot of olivine in it. But the composition is different from what we saw at Seminole and Algonquin, so we seem to have yet another rock type at Gusev.

With the Comanche campaign wrapping up, it was decision time... Allegeny Ridge or El Dorado? We had a long meeting about that at mid-week, and the consensus decision was to head for El Dorado. We should begin the drive on about Sol 704, and we're hoping it will go quickly. Expect Spirit to do a lot of driving and (except at El Dorado) not much IDD work in the weeks ahead...."


704 is Boxing Day smile.gif

What do you think - El Dorado for New Year with a nice 6 x 3 pancam postcard....go on Jim, you know you want to wink.gif


Doug
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Astro0
post Jan 5 2006, 12:01 PM
Post #202


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Fantastic to see Spirit pass the two year mark in the last few days.
Opportunity's arrivial anniversary coming up rapidly.

What a remarkable adventure, full of incredible images.

Thought I'd drop onto he forum and put another little image contribution forward.
Inspired by the recent pic of El Dorado above, here's Spirit dipping her 'toes' in.

just for fun smile.gif

Astro0

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Nirgal
post Jan 5 2006, 06:54 PM
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QUOTE (Astro0 @ Jan 5 2006, 02:01 PM)
Fantastic to see Spirit pass the two year mark in the last few days.
Opportunity's arrivial anniversary coming up rapidly.

What a remarkable adventure, full of incredible images.

Thought I'd drop onto he forum and put another little image contribution forward.
Inspired by the recent pic of El Dorado above, here's Spirit dipping her 'toes' in.

just for fun smile.gif

Astro0

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Very good work Astro0, congrats !

especuially with the realistic shadow and sun glares ... gives a real feel of scale to this world ...

smile.gif

Nirgal
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ustrax
post May 26 2006, 03:00 PM
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From Lunar and Planetary Science:

http://www.lpi.usra.edu/meetings/lpsc2006/pdf/1829.pdf


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"Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe
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Marz
post May 26 2006, 03:38 PM
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QUOTE (ustrax @ May 26 2006, 10:00 AM) *


Thanks for the post. Dumb question of the day; what is the difference between a megaripple and a small dune? I always thought aeolian ripples were just "micro-dunes", but this paper makes it sound like they are different beasts. Aren't they both formed by saltation? Does a dune require different grain sizes to allow it to form classic dune structures, whereas a ripple implies only small waveforms are possible?
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ustrax
post May 26 2006, 03:50 PM
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QUOTE (Marz @ May 26 2006, 04:38 PM) *
Thanks for the post. Dumb question of the day; what is the difference between a megaripple and a small dune? I always thought aeolian ripples were just "micro-dunes", but this paper makes it sound like they are different beasts. Aren't they both formed by saltation? Does a dune require different grain sizes to allow it to form classic dune structures, whereas a ripple implies only small waveforms are possible?


On megaripples:

https://www.ldeo.columbia.edu/~mspieg/CMG20...ega_ripples.pdf


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"Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe
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