The Stain - Page 17

Previous 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 ... 32 Next
Author Message
LWS


Posts: 3062

Reply: 321



PostPosted: August 9, 2011 7:05 PM 

Let's see. The berries have gotten much larger; there is a smaller proportion of spherical berries; there is a greater incidence of split, holed and otherwise eroded berries; there are apparently a greater number of berries per unit area near endeavour as compared with earlier craters. But some features of the berries remain the same.

Winston

Psych Author Profile Page



Posts: no

Reply: 322



PostPosted: August 9, 2011 9:46 PM 

OK, I have tried experiments on my own involving different configurations of frayed threads rubbing on dusty surfaces. So far the thread of choice is the glass fiber found in packing tape and nylon threads from braided rope. I attach them to various dusty places on my pickup, some so that the ends can only touch the surface some so that that entire strand rubs the surface. Some are multiple strands, some are frayed into fuzzy balls, some are just single strands. Results so far, unable to duplicate the stain by stray windblown fiber(s). Also, possibly because I'm using a Sony DSC-H20 with no filters, it is very difficult to photograph the results.

Ben


Posts: 2270

Reply: 323



PostPosted: August 9, 2011 10:01 PM 

Winston, your 321.
Much larger berries= erosion into deeper layers containing them
Fewer spherical berries= fluvial erosion of host rock causing shape difference and damage.
Maybe ??

Barsoomer


Posts: 344

Reply: 324



PostPosted: August 9, 2011 11:22 PM 

We saw in a pancam image near the last outcrop MI a bimodal distribution where the small berries are still there, and much more numerous than the large berries, but they are covered by the large berries. That suggests the deeper layers have smaller berries, not larger ones.

Barsoomer


Posts: 344

Reply: 325



PostPosted: August 14, 2011 12:31 AM 

Changes in the L7 filter image.

hortonheardawho


Posts: 3465

Reply: 326



PostPosted: August 14, 2011 10:12 AM 

sol 2881-2883 ( Aug 9-11, 2011 ) L257 changes to the stain:

Perhaps there is a wind blowing out of Endeavour crater that has moved the stain dust about? The next few days should be quite informative.

Barsoomer


Posts: 344

Reply: 327



PostPosted: August 15, 2011 11:27 AM 

The stain is starting to fade now that Oppy has climbed onto Cape York, where it is drier.

LWS


Posts: 3062

Reply: 328



PostPosted: August 15, 2011 7:53 PM 

The general comments as the Endeavour campaign begins suggests that now is not a bad time to bring this up.

Could some thing like the incident below be responsible for the stain?

http://lws.smugmug.com/Other/Martian-Lifeforms/1M236222650EFF85R9P2976M2M1/172376459_Egpry-X3.gif

Winston

LWS


Posts: 3062

Reply: 329



PostPosted: August 16, 2011 8:21 PM 

The link above should be:

here


Winston

LWS


Posts: 3062

Reply: 330



PostPosted: August 16, 2011 8:34 PM 

In case anyone wants to know; The GIF above was made from 2 images of the dust on one of the Oppy Magnets on sol 1217. The images were taken 2.4 minutes apart. The dark spots appear to me to have somewhat of a fluid appearance but might be just dust.

Winston

Ben


Posts: 2270

Reply: 331



PostPosted: August 16, 2011 9:49 PM 

Winston; During that short time it appears the rover moved slightly which just jostled the dust around a bit.

Smile

Barsoomer


Posts: 344

Reply: 332



PostPosted: August 16, 2011 10:23 PM 

What is the order of the two images? If it was in the reverse entropy direction, that would be particularly interesting...

LWS


Posts: 3062

Reply: 333



PostPosted: August 16, 2011 10:25 PM 

Ben;
Magnetic dust? Any evidence of Oppy moving during that 2.4 minutes? Are the black spots holes in the overlying dust that moved in the general direction and manner indicated?

Good suggestion though!

Winston

LWS


Posts: 3062

Reply: 334



PostPosted: August 16, 2011 10:28 PM 

Barsoomer;

The elongated spots followed the initial normally shaped ones. I think that suggests reverse entropy.

Winston

Barsoomer


Posts: 344

Reply: 335



PostPosted: August 16, 2011 10:45 PM 

So the spots went from being spread out evenly to being concentrated in one area with their "tails" generally pointing in the same direction?

That is most definitely reverse entropy. Not what one would expect from random jostling unless other forces were involved.

Ben


Posts: 2270

Reply: 336



PostPosted: August 16, 2011 11:28 PM 

Does anyone know if they have ever tried to take a photo from a moving rover which might indicate vibration of the platform?

Serpens


Posts: xxx

Reply: 337



PostPosted: August 17, 2011 2:39 AM 

Winston. I really don't want to make an issue of this, but I have compared the 2 MI taken on sol 1217 and there is no discernable difference. I can identify the (non-smeared) area of the MI that you used but cannot see anything resembling the smeared image anywhere in either MI. Certainly it is not the same srea with 2.4 sec interval. Or am I going blind? Could others please check these images from the JPL website?

Serpens


Posts: xxx

Reply: 338



PostPosted: August 17, 2011 2:40 AM 



LWS


Posts: 3062

Reply: 339



PostPosted: August 17, 2011 6:59 AM 

Hi Serpens;

A quick look suggests you are right. However, I did not manufacture or enhance the second image and as far as I can recall it came from an exploratorium release. However, I'll check it out later in the MER analyst's notebook and see if they came from there. I think I registered the two images in ImageJ, cropped them and then made the GIF.

I note that you really don't want to make an issue of this. Me neither, but I think it merits investigation.

Later

Winston

hortonheardawho


Posts: 3465

Reply: 340



PostPosted: August 17, 2011 8:12 AM 

Here is the animation of changes to the rover filter magnet during the dust storm on the rim of Victria crater, Mars. Taken by Opportunity Jun 27-Jul 3, 2007 ( sol 1217 - 1223)

The previous image of the filter magnet from sol 1217 was sol 273 - and the next one was on sol 1472 - and I can't find one after that!

Previous 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 ... 32 Next


Join the conversation:















Very Happy Smile Sad Surprised
Shocked Confused Cool Laughing
Mad Razz Embarassed Crying or Very Sad
Evil or Very Mad Twisted Evil Rolling Eyes Wink
Powered by MTSmileys