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- Title: The Extended Column Test: Test Effectiveness, Spatial Variability, and Comparison with the Propagation Saw Test
- Date: 2008-09-26
- Authors: Karl W. Birkeland, Ron Simenhois
- Description: The Extended Column Test (ECT) is a new stability test that aims to assess the fracture propagation potential across a 90 cm wide isolated column. Ini...
- Object ID: P__8190.pdf
- Keywords: ect, extended column test, fracture propagation, stability evaluation, avalanches
- View additional details about The Extended Column Test: Test Effectiveness, Spatial Variability, and Comparison with the Propagation Saw Test
- Title: Predictions of the Propagation Saw Test: Comparisons with Other Instability Tests at Skier Tested Slopes
- Date: 2008-09-26
- Authors: Dave Gauthier, Bruce Jamieson
- Description: Several new fracture propagation field tests have been presented in recent years. These are designed to provide specific information about propagation...
- Object ID: P__8217.pdf
- Keywords: propagation propensity, field test, instability assessment, snowpack properties, forecasting
- View additional details about Predictions of the Propagation Saw Test: Comparisons with Other Instability Tests at Skier Tested Slopes
- Title: The Effect of Snowpack Warming on the Stress Bulb Below a Skier
- Date: 2008-09-26
- Authors: Thomas Exner, Bruce Jamieson
- Description: Skier induced stresses are believed to penetrate deeper into the snow pack with increasing snow temperatures, and hence initiation of a fracture in a ...
- Object ID: P__8159.pdf
- Keywords: snowpack stability, snowpack warming, avalanche forecasting, skier stress, skier triggering
- View additional details about The Effect of Snowpack Warming on the Stress Bulb Below a Skier
- Title: Mixed Effect and Spatial Correlation Models for Analyzing a Regional Spatial Dataset
- Date: 2008-09-26
- Authors: Randall S. Mullen, Karl W. Birkeland
- Description: Understanding the spatial variability of snow at many different scales is critically important for avalanche forecasting. This research uses new techn...
- Object ID: P__8204.pdf
- Keywords: mixed models, random effects, spatially dependent models, bridger mountains, stability tests
- View additional details about Mixed Effect and Spatial Correlation Models for Analyzing a Regional Spatial Dataset
- Title: Estimating Rutschblock Stability from Snowmicropen Measurements
- Date: 2008-09-26
- Authors: Christine Pielmeier, Hans-Peter Marshall
- Description: Stability prediction from SnowMicroPen (SMP) profiles would support avalanche forecasting operations, since stability information could be gathered mo...
- Object ID: P__8126.pdf
- Keywords: snowpack stability, rutschblock, micro penetrometer, mechanical properties, avalanche forecasting
- View additional details about Estimating Rutschblock Stability from Snowmicropen Measurements
- Title: Investigations on Snow Hardness as a Measure to Determine Shear Strength
- Date: 2008-09-26
- Authors: Peter Höller, Reinhard Fromm
- Description: The shear strength plays an important role in avalanche formation. However, investigations on shear strength in the field are time-consuming, in parti...
- Object ID: P__8065.pdf
- Keywords: snow hardness, shear strength, snow density
- View additional details about Investigations on Snow Hardness as a Measure to Determine Shear Strength
- Title: Evaluating the Importance of Crystal-Type on New Snow Instability: A Strength vs. Stress Approach Using the SNOSS Model
- Date: 2008-09-22
- Authors: Jerry Casson, Mark Stoelinga, John Locatelli
- Description: Understanding new snow instability is the key factor in predicting the release of direct action avalanches during storm cycles. The compaction rates, ...
- Object ID: P__8046.pdf
- Keywords: crystal-type, shear strength, densification, direct action avalanche, stability
- View additional details about Evaluating the Importance of Crystal-Type on New Snow Instability: A Strength vs. Stress Approach Using the SNOSS Model
- Title: Statistical Assessment of Regional Avalanche Danger Using Parameters from the Snow Cover Model Snowpack
- Date: 2008-09-22
- Authors: Michael Schirmer, Michael Lehning, Jürg Schweizer
- Description: Numerical avalanche prediction with statistical methods using meteorological input parameters has shown insufficient results, mainly since snow cover ...
- Object ID: P__8182.pdf
- Keywords: avalanche forecasting, numerical simulation, snow cover model, snow cover stability, nearest neighbor, feature selection, genetic algorithm
- View additional details about Statistical Assessment of Regional Avalanche Danger Using Parameters from the Snow Cover Model Snowpack
- Title: On the Predictability of Snow Avalanches
- Date: 2008-09-22
- Authors: Jürg Schweizer
- Description: Snow avalanches are generally rare and occasionally extreme events. In the general context of prediction and predictably of extreme events, we will ex...
- Object ID: P__8205.pdf
- Keywords: snow stability evaluation, avalanche forecasting, risk management
- View additional details about On the Predictability of Snow Avalanches
- Title: Character of Naturally Triggered Avalanches and Cornice Failures
- Date: 2008-09-22
- Authors: Robert A. Burrows, David M. Mcclung
- Description: Three meteorologically-related triggers of slab avalanches and cornice failure are observed by avalanche workers: (1) Snow loading during storm and wi...
- Object ID: P__8198.pdf
- Keywords: snow stability, avalanche, cornice, avalanche trigger
- View additional details about Character of Naturally Triggered Avalanches and Cornice Failures
- Title: AK Block Project Status Update 2008
- Date: 2008-09-26
- Authors: Bill Glude, Randall S. Mullen
- Description: The AK Block is a large block snow test sized to the tester's weight and their ski or snowboard contact length, dug out on three sides, and loaded muc...
- Object ID: P__8059.pdf
- Keywords: avalanche, snow stability tests, block tests, sized-block, ak block, rutschblock
- View additional details about AK Block Project Status Update 2008
- Title: Enso and Avalanche Fatalities: Is there a Correlation?
- Date: 2008-09-22
- Authors: Mark Moore
- Description: Preliminary statistical evidence suggests that some correlation may exist between ENSO (El Niño Southern Oscillation) events and annual North Ameri...
- Object ID: P__8068.pdf
- Keywords: weather, snowpack evolution, avalanche fatality, snowpack structure, character of the winter
- View additional details about Enso and Avalanche Fatalities: Is there a Correlation?
- Title: Predicting Snow Cover Stability with the Snow Cover Model Snowpack
- Date: 2006
- Authors: Sascha Bellaire, Jürg Schweizer, Charles Fierz, Michael Lehning, Christine Pielmeier
- Description: The snow cover model SNOWPACK simulates snow stratigraphy for the locations of
automatic snow and weather stations. Based on the stratigraphy, snow s...
- Object ID: issw-2006-038-043.pdf
- Keywords: avalanche forecasting, snow cover modelling, snow stability evaluation, numerical simulation
- View additional details about Predicting Snow Cover Stability with the Snow Cover Model Snowpack
- Title: Minimizing “False-Stable†Stability Test Results: Why Digging More Snowpits is a Good Idea
- Date: 2006
- Authors: Karl W. Birkeland, Doug Chabot
- Description: The worst nightmare for an avalanche worker is to assess an unstable slope as stable since the consequence of such an assessment is that you, your cli...
- Object ID: issw-2006-498-504.pdf
- Keywords: avalanche forecasting, stability assessment, stability tests, false-stable conditions
- View additional details about Minimizing “False-Stable†Stability Test Results: Why Digging More Snowpits is a Good Idea
- Title: Uncertainties in Assessing the Stability of Fractured Slopes
- Date: 2006
- Authors: Karl W. Birkeland, Scott Savage, Simon Trautman, Kalle Kronholm, Spencer Logan, Jürg Schweizer
- Description: While doing avalanche mitigation work or traveling in the backcountry, occasionally a
sizable part of a slope fractures without triggering an avalanc...
- Object ID: issw-2006-029-037.pdf
- Keywords: snow stability, fracture, whumpf, avalanche release, avalanche forecasting
- View additional details about Uncertainties in Assessing the Stability of Fractured Slopes
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