Your search for Subject persistent slabsresulted in 33 records.
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- Title: Deep Slab Instability: Loading and Settlement Rate Thresholds Related to Failure – Part II
- Date: 2016-10-02
- Authors: Patrick J. Wright, Bob Comey, Chris McCollister, Mike Rheam
- Description: Deep slab avalanches, which tend to be large and destructive, remain a challenge to accurately forecast. Using 42 seasons of historical data from Jack...
- Object ID: ISSW16_P1.08.pdf
- Keywords: deep slab, persistent slab, settlement, loading, avalanche forecasting
- View additional details about Deep Slab Instability: Loading and Settlement Rate Thresholds Related to Failure – Part II
- Title: A New Crack Propagation Criterion for Skier-Triggered Snow Slab Avalanches
- Date: 2016-10-02
- Authors: Johan Gaume, Benjamin Reuter, Alec van Herwijnen, Jürg Schweizer
- Description: Dry-snow slab avalanches begin with a local failure in a weak snowpack layer buried below cohesive slab layers. If the size of the failed zone exceeds...
- Object ID: ISSW16_P1.01.pdf
- Keywords: snow avalanche, skier-triggering, failure initiation, crack propagation, pst, slab, weak layer
- View additional details about A New Crack Propagation Criterion for Skier-Triggered Snow Slab Avalanches
- Title: Weather Preceding Persistent Deep Slab Avalanches
- Date: 2013-10-07
- Authors: Michael Conlan, Bruce Jamieson
- Description: Deep slab avalanches release on persistent weak layers of facets, surface hoar, depth hoar, or poorly bonded crusts and are generally hard to forecast...
- Object ID: ISSW13_paper_P1-01.pdf
- Keywords: deep slab avalanche, persistent weak layer, weather, natural, localized dynamic load
- View additional details about Weather Preceding Persistent Deep Slab Avalanches
- Title: Measurements of ECT Scores and Crack-Face Friction in Non-Persistent Weak Layers: What are the Implications for Practitioners?
- Date: 2012
- Authors: Ron Simenhois, Karl W. Birkeland, Alec van Herwijnen
- Description: Field observations suggest that avalanches releasing on non-persistent weak layers tend to slide on steeper slopes than other dry slab avalanches. Rec...
- Object ID: issw-2012-104-110.pdf
- Keywords: weak snowpack layers, extended column test, slopes, dry slab avalanche,
- View additional details about Measurements of ECT Scores and Crack-Face Friction in Non-Persistent Weak Layers: What are the Implications for Practitioners?
- Title: Storm Snow Avalanches: Characteristics and Forecasting
- Date: 2012
- Authors: Edward H. Bair, Ron Simenhois, Alec van Herwijnen, Karl Birkeland, Jeff Dozier
- Description: At ski areas, a majority of avalanches fail in storm snow. We investigate these avalanches using stability tests and avalanche observations from Calif...
- Object ID: issw-2012-111-114.pdf
- Keywords: storm snow, ski area, extended column test
- View additional details about Storm Snow Avalanches: Characteristics and Forecasting
- Title: Which OBS for Which Avalanche Type?
- Date: 2010
- Authors: Bruce Jamieson, Jürg Schweizer, Grant Statham, Pascal Haegeli
- Description: At the 2004 ISSW, Roger Atkins proposed that—early in the terrain selection process— backcountry travellers could identify which types o...
- Object ID: ISSW_O-029.pdf
- Keywords: avalanches types, atkins’ approach
- View additional details about Which OBS for Which Avalanche Type?
- Title: Experience is Not Enough: Persistent Weak Layers in Western Canada 2007 – 2010
- Date: 2010
- Authors: Karl Klassen
- Description: The winters of 2007/08, 2008/09, and 2009/10 in British Columbia were characterized by numerous persistent weak layers (PWLs). Professional avalanche ...
- Object ID: ISSW_O-032.pdf
- Keywords: weak layers, human factors, avalanche practitioners
- View additional details about Experience is Not Enough: Persistent Weak Layers in Western Canada 2007 – 2010
- Title: Snow Characterization by Facet Number and Size From Snow Pit Wall Photographs
- Date: 2010
- Authors: Mathias Gergely, Martin Schneebeli
- Description: Faceted snow within a natural snowpack often weakens its stability, with depth hoar being a prime example for a persistent weak layer. Traditionally, ...
- Object ID: ISSW_P-005.pdf
- Keywords: faceted snow, depth hoar, persistent weak layers, snow properties, wind-pressed snow
- View additional details about Snow Characterization by Facet Number and Size From Snow Pit Wall Photographs
- Title: The Avalanche Situation in a Special Winter. Review of the 09/10 Season in Norway
- Date: 2010
- Authors: Christian Jaedicke, Kjetil Brattlien, Regula Frauenfelder, Krister Kristensen, Kalle Kronholm
- Description: The 2009/10 season featured significantly different snow conditions compared to the
usually maritime snow pack in most of Norway. A stable high-press...
- Object ID: ISSW_P-070.pdf
- Keywords: high-pressure system, depth hoar, weak layers, fatalities
- View additional details about The Avalanche Situation in a Special Winter. Review of the 09/10 Season in Norway
- Title: Evolving Shear Strength, Stability and Snowpack Properties in Storm Snow
- Date: 2006
- Authors: Catherine Brown, Bruce Jamieson
- Description: There is a lack of measurements on the rapidly changing mechanical and physical
properties of non-persistent instabilities in storm snow. Given the i...
- Object ID: issw-2006-015-021.pdf
- Keywords: non-persistent weak layers, storm snow, shear strength, stability indices
- View additional details about Evolving Shear Strength, Stability and Snowpack Properties in Storm Snow
- 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
- View additional details about Interfacial Crack Velocities in a Snow Slab – Numerical Simulation
- 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
- View additional details about Slab Avalanche Triggering: A Combination of Four Basic Phenomena in Series
- 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
- View additional details about Sawlem: Slab and Weak Layer Evolution Model
- 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
- View additional details about A Comparison of the Spatial Patterns of Penetration Resistance of Slabs and Weak Layers
- 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
- View additional details about Correlating Snow Micro-Structure with Snow Shear Strength
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