Videos for avalanche practitioners

The videos on this page posted since ~2015 are by Bruce Jamieson (snowline.ca) and colleagues. Some of the earlier videos on this page are links to videos made by Bruce Jamieson and ASARC colleagues (UCalgary.ca/asarc). The links to all these videos can be shared freely and the videos used for any purpose, including commercially, provided the content and authorship are not altered.

Communicating avalanche likelihood and probability

Starting with the likelihood definition and terms in the Conceptual Model of Avalanche Hazard (Statham et al., 2018), Scott Thumlert, Grant Statham and Bruce Jamieson present some ideas for improving avalanche likelihood and how it can be communicated. Presented at the Virtual Snow Science Workshop, October 2020. CC BY-ND.

Tradeoffs in avalanche operations

How do avalanche practitioners decide which runs, roads or backcountry terrain to open and when to close areas down? In this 12 minute video, John Stimberis, Larry Stanier and Bruce Jamieson attempt a high level overview of the decision process. September 2020. CC BY-ND.

Near crust faceting and resulting avalanches

A technical video for avalanche practitioners and recreationsts interested in avalanche science. Outlines the formation of faceted layers near melt-freeze crusts, the persistence of these layers as potential failure layers for slab avalanches and some ideas on anticipating the resulting slab avalanches. Bruce Jamieson and Scott Savage, May 2020. CC-BY-ND.

A more visual method for rating avalanche size on the D-scale

A video to start discussion about whether visualization will help us rate avalanche size on the D-scale. By Bruce Jamieson, Montse Bacardit, Ethan Greene and Ian Tomm. May 2020. CC BY-ND.

Exercise for rating avalanche size on the D-scale

Photos of 15+ avalanches so you can practice rating their size with the more visual method and compare your rating to ours. Bruce Jamieson, Montse Bacardit, Ethan Greene and Ian Tomm. May 2020. CC BY-ND.

Avalanche decision aids - the good, the bad and the disruptive

This video outlines some general advantages and disadvantages of avalanche decision aids. The advantages and disadvantages are general enough that – I hope – both backcountry recreationists and avalanche practitioners find something useful in this video. This video does not explain how to use any decision aids but does show four decision aids and identify where to find more information on them.

Bruce Jamieson, Pascal Haegeli, and Mike Conlan, 2020, CC BY-ND.

How risky is ski cutting by avalanche practitioners?

Highlights of a paper on the risk of ski cutting by avalanche practitioners. Bruce Jamieson, Karl Birkeland, Mark Vesely, Ilya Storm, John Stimberis, 2019, CC BY-ND.

Case study of facets-on-crust in western Canada

A case study for avalanche practitioners about a difficult winter in which a weak layer of facets on a melt-freeze crust produced avalanches - including many large hard-to-forecast avalanches - throughout the winter. Bruce Jamieson, 2019, CC BY-ND.

Is conventional avalanche forecasting Bayesian updating?

We explain why we prefer to describe conventional avalanche forecasting as an iterative process or, simply, updating. Bruce Jamieson and Karl Birkeland, July 2020. CC BY-ND.

Common snowpack instability tests, by Mike Conlan

A brief how-to for common snowpack tests to locate and assess instabilities within the snowpack, presented by Mike Conlan (UCalgary.ca/asarc).  Start times of tests in this video are as follows: 

1:32  Compression Test 

5:06  Deep Tap Test 

7:28  Extended Column Test

10:54  Rutschblock Test

14:48  Propagation Saw Test

18:48  Shovel Shear Test

20:49  Hand Shear Test

22:11  Concluding remarks on initiation, propagation, and limitations.

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