Hairline Fractures

• by Kitharode moderator

  Running down the image (top left and near centre) are some very thin 'hairline fracture' features. We met some of these many moons ago but I've not noticed them for a long time. They were mysterious then and they are mysterious now.

  Posted September 1, 2015 5:18 PM

• by Kitharode moderator

  Just like buses: None for ages, then two come along together. APF0001e6x

  Posted September 1, 2015 5:27 PM

• by wassock moderator

  Would be interesting to see a later image when the fans really get going, if they are cracks we should see them venting?

  Posted September 7, 2015 10:25 AM

• by mschwamb scientist, translator

  I had a summer student work this summer on developing some of the tools necessary so that we can do that. So we can identify different P4 images that have the same position in it. Hopefully in time we'll have that all ready to go to link fans from one image to another.

  Cheers,

  ~Meg

  Posted September 8, 2015 7:27 AM

• by HMB6EQUJ5

  There's some recently classified images having similar hairline fractures: APF0001e4m APF0001ee2 APF0001e3v

  I have them in a new collection entitled fractures if ur able to access my collections.

  Posted September 19, 2015 3:53 PM

• by p.titchin

  Just classified this image from Giza. APF0001e63 . It has a well developed system of fine 'cracking' outlining polygons, the 'cracks being outlined themselves by dark material. Could this be vented deposits from very low level and low pressure venting or seepage? ~ Pete

  Posted December 14, 2015 9:52 AM

• by mschwamb scientist, translator in response to p.titchin's comment.

  Hi,

  Looking at the bigger image, it does look the dark is outlining polygonal cracks, though not fully. It looks like the image is taken in Autumn so there is not more ice around. I can't remember if you can processes that concentrate soil into the cracks or preferred size of paticle.

  Cheers,

  ~Meg

  Posted December 14, 2015 10:06 AM

• by floriel

  I started to tag pictures with those hairline cracks with #cracks until I realized that the tag was in some cases used for other, bigger cracks. So I now use #hairlines since it hasn't been used jet.
  A recently classified image clearly shows loads of fans being emitted along the hairline cracks: APF0001eqs

  Posted December 23, 2015 12:51 PM

• by floriel

  And I just realized p.titchin already gathered a whole collection of em: Linear emissions

  Posted December 23, 2015 12:55 PM

• by mschwamb scientist, translator in response to floriel's comment.

  Hi floriel,

  You're very welcome to make your own collection of these and do your own investigation as well.

  Cheers,

  ~Meg

  Posted December 25, 2015 6:21 AM