Item: WHAT IS A WIND SLAB? A REVIEW OF VARIABLE DEFINITIONS IN RESEARCH AND PRACTICE
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Title: WHAT IS A WIND SLAB? A REVIEW OF VARIABLE DEFINITIONS IN RESEARCH AND PRACTICE
Proceedings: Proceedings, International Snow Science Workshop, Whistler, BC, Canada, 2026
Authors:
- Nata de Leeuw [ West Central Montana Avalanche Center, Missoula MT ]
- Karl Birkeland [ Birkeland Snow and Avalanche, Bozeman MT ]
- Jordy Hendrikx [ Antarctica New Zealand, Christchurch NZ ]
Date: 2026-09-28
Abstract: Despite widespread use in both research and practice, the definition of the term wind slab varies throughout snow and avalanche literature. Publications from as early as the 1930s recognized the role of wind in transporting snow and creating slabs, but acknowledged that the process was poorly understood. Though our understanding of formation processes has advanced, definitions of the term wind slab remain inconsistent. Some definitions focus on physical properties of the slab and snow grains, while others focus on formation. Different definitions are not necessarily mutually inclusive of each other. Associated terms such as wind skin and wind crust, while often used in practical situations, are only infrequently and vaguely defined in avalanche literature. Inconsistent definitions pose challenges for both practitioners and researchers. In avalanche forecasting, inconsistent definitions can hinder communication, which can lead to the application of inappropriate mitigation or avoidance strategies. From a scientific perspective, it is important to accurately and consistently define terms in order to effectively conduct and communicate research. This review paper addresses the varied definitions of the term wind slab and other associated terms. In doing so, it also summarizes how our understanding of wind influence on snow has evolved. Examining both historic and modern uses of the term wind slab can help us form consistent definitions, not just for wind-related terms, but perhaps for other avalanche problem types as well.
Object ID: ISSW2026_P2.45.pdf
DOI: https://doi.org/10.15788/1790099013
Language of Article: English
Presenter(s): Nata De Leeuw
Keywords: Wind Slab, Avalanche Problems, Avalanche Problem Types, Review Article
Page Number(s): 1562 - 1567
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