Scope profile data

Sample Test Data and Results  Winter 2018 | 2019

Results of manual hand hardness tests overlayed on snow profile graphs generated from a 1-2 second probe of the Scope.

The following six snow profiles are only a selection of our data, meant to represent a wide selection of snow conditions from a variety of locations, including the Wasatch, Tetons, Beartooths, and Selkirks.

A few things are important to note when comparing hand hardness data to Scope profiles:

  • 1.All of these charts were generated with the same processing algorithm, meaning that data was not manipulated to match individual hand hardness profiles.
  • 2.The scope profile data is much more detailed than a hand hardness pit, collecting one hardness value per mm of depth. This means it picks up many minor layers and grain boundaries that are not identified in a hand hardness profile, giving a more accurate picture of the snowpack.
  • 3.Hand Hardness profiles have by their nature a large amount of human error. There is opportunity for minor layers to be missed in a hand hardness profile, and potential for large variation in absolute hardness estimations depending on the practitioner. What should be compared is the general trend in hardness and critical layers, not so much the absolute hardness values.
  • 4.Several of the scope profiles show a very hard layer at the ground that is not identified in the hand hardness profile. This is actually the probe picking up a mud layer at the ground and should be ignored. We are working on filtering this out in processing.
March 7, 2019 Esplanade Range, Interior British Columbia
Generally Cohesive snowpack, with healing basal facets and a dose of 20cm of powder on top with no reactive weak layers
Avatech Scope
Avatech Scope
Jan 12, 2019 Big Cottonwood Canyon, Utah
Significant large weak layer in the midpack under a stout windcrust. Lower snowpack is strengthening facets. Two Artificial thin weak layers were added to the pack to test the ability of the Scope to pick up on sub 1cm weak layer
Avatech Scope
Avatech Scope
March 16, 2019 Southern Desert, Utah
Stable late winter snowpack - no significant weak layers and a generally right side up form. The force sensor of the scope hit its maximum limit on the very hard ice layers near the bottom of the snow pack.
Avatech Scope
Avatech Scope
December 16, 2018 Little Cottonwood Canyon, Utah
Early season snowpack, with touchy persistent depth hoar issue from october snowfall.
Avatech Scope
Avatech Scope
January 19, 2019 Teton Range , Wyoming
Highly wind affected location with many buried wind crust layers. Generally fairly hard snowpack resting on top of a weaker layer of rounding basal facets. An artificial weak layer was added to test the Scope’s ability to pick up thin weak layers.
Avatech Scope
Avatech Scope
January 02, 2019 Beartooth Range , Montana
Shallow, mostly faceted early season snowpack. Lower snowpack is slowly rounding.
Avatech Scope
Avatech Scope