1. Common snowpack tests


    from Bruce Jamieson Added 14.3K 123 7

    A brief how-to for common snowpack tests to locate and assess instabilities within the snowpack, presented by Mike Conlan. Start times of tests in this video are as follows: 1:32 Compression…

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    • a PST on PI day


      from Bruce Jamieson Added 332 2 0

      Scott Thumlert demonstrates a Propagation Saw Test in which only about 25 cm of a 118 cm long column was cut before the fracture propagated to the end of the column and - in this case - the block…

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      • Some sped up video of Asarc staff doing various snowpack tests and observations


        from Bruce Jamieson Added 106 0 0

        This video was prepared by Dave Gauthier in 2007 as b-roll for the media, i.e. clips they could show during voice-over parts of a interview.

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        • Propagation saw test (PST) on level ground


          from Bruce Jamieson Added 467 2 0

          Dave Gauthier demonstrates a propagation saw test on level ground. He drags the blunt edge of a snow saw along the weak layer for about 25% of the column length before the fracture propagates to the…

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          • Propagation Saw Test


            from AIARE Avalanche Education Added 1,123 4 1

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            • An early propagation saw test with an extra long column


              from Bruce Jamieson Added 432 1 0

              For weak layers up to 100 cm vertically below the surface, SWAG recommends a 100 cm long column. In the early days we used a variety of column lengths. This is a long one! Thomas Exner is the saw…

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              • A propagation saw test (PST)


                from Bruce Jamieson Added 510 3 0

                A propagation saw test (PST) in an surface hoar layer under a soft slab. Indicates fracture propagation is likely where conditions are similar.

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                • Propagation saw test (PST)


                  from Bruce Jamieson Added 1,541 4 1

                  This video explains why the the PST was developed, shows two demonstrations of the propagation saw test, explains the usual interpretation of test results, and shows how it performed next to real…

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