Your search for Subject surface hoar layerresulted in 80 records.
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- Title: Cooling and Avalanches
- Date: 2012
- Authors: Penelope H. Goddard
- Description: Avalanches which occur during periods of cooling are important because they can surprise people, even very experienced practitioners. However, the inf...
- Object ID: issw-2012-580-585.pdf
- Keywords: freezing levels, slab failure, snow surface temperature, snowpack conditions
- View additional details about Cooling and Avalanches
- Title: The Effectiveness of Boot Packing for Snowpack Stabilization
- Date: 2012
- Authors: Matt Wieland, Jordy Hendrikx, Karl W. Birkeland
- Description: Depth hoar is a persistent weak layer that is a common instability problem in the snowpack of many areas around the world. Boot packing or compaction ...
- Object ID: issw-2012-993-997.pdf
- Keywords: hoarfrost, weak layer, boot packing, snow density
- View additional details about The Effectiveness of Boot Packing for Snowpack Stabilization
- Title: How Snow Fails
- Date: 2010
- Authors: Ingrid Reiweger, Jürg Schweizer
- Description: Dry-snow slab avalanches start with a failure in a weak layer below a cohesive slab. Avalanche release models start with an initial crack which may pr...
- Object ID: ISSW_O-039.pdf
- Keywords: dry-snow slab, cohesive slab, surface hoar
- View additional details about How Snow Fails
- Title: Surface Hoar Morphology and Association With Snow Surface Substrate
- Date: 2010
- Authors: Eric White, Edward E. Adams
- Description: Field observations of surface hoar crystal formation onto the snow surface raised the question of the potential influence which the surface snow grain...
- Object ID: ISSW_P-027.pdf
- Keywords: snow crystals, snowpack, surface hoar, macrophotography
- View additional details about Surface Hoar Morphology and Association With Snow Surface Substrate
- Title: Field and Analytical Examination of Near-Surface Facets
- Date: 2010
- Authors: Andrew E. Slaughter, Edward E. Adams
- Description: North- and south-facing field research locations were established that included meteorological stations coupled with daily observations and grain-scal...
- Object ID: ISSW_O-006.pdf
- Keywords: near-surface facets, radiation recrystallization, heat-transfer model, sensitivity analysis, monte carlo simulations
- View additional details about Field and Analytical Examination of Near-Surface Facets
- Title: The Spatial Distribution of Two Surface Hoar Events in the Chilkat and Takhinsha Mountains of Southeast Alaska
- Date: 2010
- Authors: Matthew Borish, Karl W. Birkeland, Stuart Challender, Stephan Custer
- Description: Understanding the spatial distribution of weak layers is a significant challenge for avalanche forecasters. Thus, improving our understanding of the p...
- Object ID: ISSW_O-014.pdf
- Keywords: chilkat and takhinsha mountains, avalanche, near-surface facets
- View additional details about The Spatial Distribution of Two Surface Hoar Events in the Chilkat and Takhinsha Mountains of Southeast Alaska
- Title: Shear Deformation of Radiation Recrystallized Near Surface Facets
- Date: 2010
- Authors: David J. Walters, Edward E. Adams, Patrick J. Staron, Ladean R. McKittrick
- Description: A layer of radiation recrystallized near surface facets was produced in a controlled
environmental chamber at Montana State University. Environmental...
- Object ID: ISSW_O-015.pdf
- Keywords: radiation recrystallization, shear, strain, optical, mechanics, snow
- View additional details about Shear Deformation of Radiation Recrystallized Near Surface Facets
- Title: On the Sustainability and Arrest of Weak Layer Fracture in Whumpfs and Avalanches
- Date: 2010
- Authors: Dave Gauthier, Bruce Jamieson
- Description: Recent theoretical and practical descriptions of weak layer fracture have focused on the mechanics of achieving a state of propagation, which is assum...
- Object ID: ISSW_O-043.pdf
- Keywords: whumpfs, avalanches, en-echelon slab fractures,
- View additional details about On the Sustainability and Arrest of Weak Layer Fracture in Whumpfs and Avalanches
- Title: A Field Method for Measuring Slab Stiffness and Weak Layer Fracture Energy
- Date: 2010
- Authors: Alec van Herwijnen, Joachim Heierli
- Description: Traditional field measurements, such as snow profiles and stability tests, are widely used to provide information on snow cover stability for avalanch...
- Object ID: ISSW_O-044.pdf
- Keywords: fracture energy, slab, avalanche forecasting,
- View additional details about A Field Method for Measuring Slab Stiffness and Weak Layer Fracture Energy
- Title: Monitoring Diurnal Near-Surface Faceting
- Date: 2010
- Authors: Brett Kobernik, Wendy Wagner
- Description: Near-surface faceting produces weak snow grains at or near the snow surface and
once buried has the potential to form weak layers in the snowpack str...
- Object ID: ISSW_P-010.pdf
- Keywords: near-surface faceting, snowpack structure, fatalities, ibuttons
- View additional details about Monitoring Diurnal Near-Surface Faceting
- Title: On Surface Warming and Snow Instability
- Date: 2010
- Authors: Jürg Schweizer, Bruce Jamieson
- Description: Warming is believed to be one of the most prominent causes of snow instability – although experimental evidence is rare. We know that – ...
- Object ID: ISSW_P-058.pdf
- Keywords: surface warming, slab avalanches, dry-snow, near-surface layers
- View additional details about On Surface Warming and Snow Instability
- Title: Modeling Variation of Surface Hoar and Radiation Recrystallization Across a Slope
- Date: 2009
- Authors: E. Adams, L. McKittrick, A. Slaughter, P. Staron, R. Shertzer, D. Miller, T. Leonard, D. McCabe, I. Henninger, D. Catharine, M. Cooperstein, K. Laveck
- Description: Faceted ice crystals (plane faced grains) are frequently observed in investigations of
slab snow avalanches. Morphologies of this sort can develop wh...
- Object ID: issw-2009-0097-0101.pdf
- Keywords: snow, metamorphism, near surface faceting, surface hoar
- View additional details about Modeling Variation of Surface Hoar and Radiation Recrystallization Across a Slope
- Title: Numerical Investigation of Factors Causing Near-Surface Metamorphism
- Date: 2009
- Authors: Andrew E. Slaughter, Edward E. Adams
- Description: Buried layers of surface hoar or near-surface facets within the snowpack are well known to be the culprit in a majority of avalanches. Near-surface me...
- Object ID: issw-2009-0072-0076.pdf
- Keywords: facets, surface hoar, radiation-recrystallization, numerical analysis, monte carlo, sensitivity
- View additional details about Numerical Investigation of Factors Causing Near-Surface Metamorphism
- Title: Faceted Melt Forms, a Deadly and Unpredictable Weak Layer
- Date: 2009
- Authors: Bill Glude
- Description: Faceted melt forms are a particularly persistent and difficult-to-predict weak layer we
have commonly found in Alaska and in the Japanese Alps. This ...
- Object ID: issw-2009-0092-0096.pdf
- Keywords: avalanche, case histories, persistent weak layer, facets, faceted melt forms
- View additional details about Faceted Melt Forms, a Deadly and Unpredictable Weak Layer
- Title: Spatially Predicting Surface Hoar Crystal Size in Sparse Forests Using Shading in Satellite Imagery
- Date: 2009
- Authors: Cora Shea, Bruce Jamieson
- Description: Surface hoar size and location can help predict avalanche trigger points after burial. This paper presents an empirical model to predict the size of s...
- Object ID: issw-2009-0102-0106.pdf
- Keywords: spatial variability, surface hoar, mapping, prediction, satellite imagery
- View additional details about Spatially Predicting Surface Hoar Crystal Size in Sparse Forests Using Shading in Satellite Imagery
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