Chapter 1 (of 3) outlines the formation of surface hoar.
Chapter 2 covers changes to buried surface hoar and propagation propensity.
Chapter 3 is about choosing terrain and how pros track persistent weak layers.
#surfacehoar #slabavalanche #avalanche #forecasting #persistentweaklayer #avalancheforecasting #simonhorton
For more on the following topics briefly mentioned in the video, follow the links:
- Rider triggering (including triggering from a thin area) and crack propagation in weak layers. https://vimeo.com//773056211
- Surface energy exchange and near surface faceting. https://vimeo.com/243958459
Simon Horton and Bruce Jamieson, uploaded 23 October 2023. CC BY-ND.
For help with the video, we thank Greg Johnson, Marc Piché, Dave Gauthier, Karl Klassen, Doug Chabot, John Buffery, Bill Mark, Ryan Buhler, Steve Conger, Brad Stanton, Dan Miller, Ed Adams & past ASARC students and staff.
Key references:
1. S. Horton and Jamieson, B. 2016. Modelling hazardous surface hoar layers throughout western Canada with a coupled weather and snow cover model. Cold Regions Science and Technology 128, 22-31.
2. B. Jamieson and Schweizer, J. 2000. Texture and strength changes of buried surface hoar layers with implications for dry snow-slab avalanche release. Journal of Glaciology 46(152), 151-160.