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Your search for Subject weak layersresulted in 67 records.

Title: Interfacial Crack Velocities in a Snow Slab – Numerical Simulation
Date: 2006
Authors: P. Mahajan, S.K. Joshi
Description: A snow pack consists of weak layers embedded in strong layers. The interface bond between a weak layer and layers in between which it is sandwiched m...
Object ID: issw-2006-092-100.pdf
Keywords: cohesive zone, dynamic crack growth, weak layer, snow, finite element
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Title: Slab Avalanche Triggering: A Combination of Four Basic Phenomena in Series
Date: 2006
Authors: Alain Duclos, François Louchet
Description: There is still a significant gap between models describing slab avalanche triggering mechanisms and practical field applications in terms of risk pre...
Object ID: issw-2006-101-106.pdf
Keywords: avalanche triggering, crack propagation, avalanche program
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Title: The Effect of Slab and Bed Surface Stiffness on the Skier-Induced Shear Stress in Weak Snowpack Layers
Date: 2006
Authors: Alan Jones, Bruce Jamieson, Jürg Schweizer
Description: A finite element model was developed to simulate a snowpack with localized surface loading of a skier on a slab of varying stiffness overlaying a thin...
Object ID: issw-2006-157-164.pdf
Keywords: snow avalanche, avalanche formation, skier triggering, numerical modeling
View additional details about The Effect of Slab and Bed Surface Stiffness on the Skier-Induced Shear Stress in Weak Snowpack Layers

Title: Sawlem: Slab and Weak Layer Evolution Model
Date: 2006
Authors: Antonia Zeidler, Bruce Jamieson, Thomas Chalmers, Greg Johnson
Description: Snowpack evolution models developed in Europe require meteorological and radiation instrumentation rarely used in North America. In contrast, SAWLEM ...
Object ID: issw-2006-228-233.pdf
Keywords: slab avalanches, avalanche forecasting, snowpack stratigraphy, persistent weak layers
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Title: Shear Strength of Natural and Artificial Depth Hoar Layers
Date: 2006
Authors: Osamu Abe, Junrong Xu, Jian Liu, Hiroyuki Hirashima, Shigeto Mochizuki, Satoru Yamaguchi, Takeshi Sato, Atsushi Sato
Description: Many data on shear strength and density of natural depth hoar layers were collected from Japan, west China and Alaska. Snow metamorphism experiments u...
Object ID: issw-2006-007-014.pdf
Keywords: shear strength, depth hoar, avalanche occurrence
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Title: Associations Between Shear Strength of a Buried Surface Hoar Layer and Stratigraphic, Topographic and Vegetation Characteristics on a “Uniform” Slope
Date: 2006
Authors: Eric Lutz, Karl W. Birkeland, Martin Schneebeli, Kathy J. Hansen, Kalle Kronholm
Description: In this study we quantify 1) changes in spatial and aspatial characteristics of the shear strength of a buried surface hoar layer, and 2) identify ch...
Object ID: issw-2006-027-028.pdf
Keywords: shear strength, snow stratigraphy, snow microstructure, slope uniformity
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Title: Snowpack Basal Layer Facets in the Sierra Nevada
Date: 2006
Authors: Randall Osterhuber
Description: Though California’s Sierra Nevada generally experiences deep snowpacks and modest midwinter air temperatures, faceted snow grains do form and p...
Object ID: issw-2006-183-186.pdf
Keywords: facets, depth hoar, wet slab avalanche
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Title: A Comparison of the Spatial Patterns of Penetration Resistance of Slabs and Weak Layers
Date: 2004
Authors: K. Birkeland, K. Kronholm
Description: Extended Abstract. Several studies have quantified the spatial variability of snow stability and structure on specific slopes. One consequence of such...
Object ID: ISSW-2004-002.pdf
Keywords: snowmicropen, persistent weak layers, spatial patterns
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Title: Correlating Snow Micro-Structure with Snow Shear Strength
Date: 2004
Authors: Eric R. Lutz, Karl W. Birkeland, Kalle Kronholm, Kathy Hansen, Richard Aspinall
Description: Extended Abstract. Researchers and avalanche forecasters have used an array of probes over the years to quickly analyze snow structure with the goal ...
Object ID: ISSW-2004-008.pdf
Keywords: snow microstructure, shear strength, stability, persistent weak layer
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Title: The Effects of Slope Aspect on the Formation of Surface Hoar and Diurnally Recrystalized Near-Surface Faceted Crystals: Implications for Avalanche Forecasting
Date: 2004
Authors: Mike S. Cooperstein, Karl W. Birkeland, Kathy J. Hansen
Description: This study presents evidence that slope aspect plays a significant role in the formation, size, type, and extent of surface hoar and near-surface face...
Object ID: issw-2004-083-093.pdf
Keywords: avalanche, avalanche forecasting, large scale spatial variability, surface hoar, diurnally recrystalized near-surface faceted crystals, temperature and vapor pressure gradients
View additional details about The Effects of Slope Aspect on the Formation of Surface Hoar and Diurnally Recrystalized Near-Surface Faceted Crystals: Implications for Avalanche Forecasting

Title: Correlating Snow Micro-Structure with Snow Shear Strength
Date: 2004
Authors: Eric R. Lutz, Karl W. Birkeland , Kalle Kronholm , Kathy Hansen , Richard Aspinall
Description: Extended Abstract
Object ID: issw-2004-121-123.pdf
Keywords: snow microstructure, shear strength, stability, persistent weak layer
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Title: A Simple Model of Snow Slope Stability During Storms
Date: 2004
Authors: P. Hayes, C. Wilbour, R. Gibson, H.P. Marshall, H. Conway
Description: Snow slope stability is controlled by the geometry of the start zone and the mechanical properties of the snow pack. Here we report progress toward de...
Object ID: issw-2004-165-171.pdf
Keywords: snow slope stability, avalanches, modeling
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Title: Snow Avalanche Climatology of the Eastern Sierra Nevada, California
Date: 2004
Authors: Susan Burak
Description: The Sierra Nevada mountain range of California lies between 35o and 40oN and is located within 320 km (200 miles) of the Pacific Ocean. Previous inve...
Object ID: issw-2004-245.pdf
Keywords: weak layers, temperature gradient, human triggered, climatology
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Title: Initial Description of Avalanche Winter Regimes for Western Canada
Date: 2004
Authors: Pascal Hageli, David M. McClung
Description: Existing snow climate classifications rely heavily on meteorological parameters that describe the average weather during the main winter months. Field...
Object ID: issw-2004-247-254.pdf
Keywords: snow climate, avalanche climate, avalanche winter regime, avalanche forecasting
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Title: A Comparison of the Spatial Patterns of Penetration Resistance of Slabs and Weak Layers
Date: 2004
Authors: K. Birkeland, K. Kronholm
Description: Several studies have quantified the spatial variability of snow stability and structure on specific slopes. One consequence of such spatial variabili...
Object ID: issw-2004-287.pdf
Keywords: pattern, weak layer, slab, grain, snow stability
View additional details about A Comparison of the Spatial Patterns of Penetration Resistance of Slabs and Weak Layers