Tuesday, February 13, 2007

Day 28 - Friday Feb. 9 - "Ski" Tour?


I had my avalanche course today. I carpool with a couple people from class. Today I drove and we were blessed to hear the sweet sounds of Radiohead - OK Computer. We split up into two groups. My group went out and just skinned around the cardiac / pole-line pass area. Our goal was to just look at the snow on different aspects and see if we could interpolate what might happen after the storm to come this weekend (it's about time). On a SW aspect of about 35 degrees we had a fairly easy shear from a quick pit about a foot to two feet below the surface. This broke on a layer of very large facets. This could prove to be a good propogation layer for slides to come. On a SE aspect of about 30 degrees we found a collapsible crust in the trees along with a harder crust in the sun. We once again had easy shears, but this time it was closer to the surface. Our interpolations for this next storm is to watch out for trouble. Because of the water amount that is supposed to come (thus providing excess weight) we can expect to see a number of slides on a number of different aspects. This will be a good time to stick to the trees or at the resort.
The pit data attached is from the other group. They also took some shear frame data which I don't totally know what to do with just yet, but I am sure I will find out soon.
Shear Pulls # height density size
1.7 40cm 340kg/m3 .10m
2.2 45 340 .10
2.1 27 320 .10
1.1 27 320 .10
1.5 27 320 .10
The skiing was poor today, but it was nice to have a reason to get out.

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