In this episode of The Avalanche Hour, Caleb Merrill makes another appearance to sit down with Mark Staples, director of the Gallatin National Forest Avalanche Center, and avalanche researcher/educator Bruce Jamieson. The group discuss heavyweight topics in the avalanche industry such as snow-surface energy exchange, near-surface faceting, and communicating avalanche hazard. 

Staples recounts his path from powder skiing to avalanche work, his research on snow-surface energy balance, and his experience connecting with varied user groups. Jamieson describes collaborating with Staples on educational videos and credits Karl Birkeland’s 1998 papers for focusing attention on near-surface faceting. Staples also contrasts surface hoar (vapor deposition) with near-surface facets (metamorphism of existing snow grains), and they cover conditions that promote growth, including cooling to a clear sky and relative humidity. The conversation also explores simplifying avalanche problem types, terrain-based risk management, the public’s interest in science, and learning from accidents. 

Thanks to the sponsors of the show!

Legacy Sponsors:

Darren Johnson Avalanche Education Memorial Fund

AVSS

Drone Amplified

Partner Sponsors:

CIL Avalanche

Safeback

onX Backcountry

Episode Sponsor:

Arva

Music: Ketsa

Artwork: Mike Tea 

Production: Caleb Merrill, Bob Keating