Your search for Keyword "fracture."resulted in 80 records.
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- Title: Fracture Energy of Weak Snowpack Layers
- Date: 2010
- Authors: Jürg Schweizer, Alec van Herwijnen, Benjamin Reuter
- Description: Recent experimental and theoretical work has provided new insight into weak layer fracture in view of dry-snow slab avalanche release. The two main pa...
- Object ID: ISSW_P-079.pdf
- Keywords: snowpack layers, fracture, dry snow
- View additional details about Fracture Energy of Weak Snowpack Layers
- Title: Some Insights Into Fracture Propagation in Weak Snowpack Layers
- Date: 2010
- Authors: Joachim Heierli, Alec van Herwijnen, Peter Gumbsch, Michael Zaiser
- Description: Dry snow slab avalanches form when fracture, once initiated in a weak snowpack layer, propagates over large distances, progressively debonding a vast ...
- Object ID: ISSW_P-078.pdf
- Keywords: dry snow, weak snowpack layers, fracture
- View additional details about Some Insights Into Fracture Propagation in Weak Snowpack Layers
- Title: Validating the Propagation Saw Test on the Slope Scale
- Date: 2009
- Authors: Cameron Ross, Bruce Jamieson
- Description: Over the past few seasons, the Propagation Saw Test (PST) has gained increasing
acceptance in some guiding and highway operations in western North Am...
- Object ID: issw-2009-0282-0286.pdf
- Keywords: fracture propagation, snowpack stability, propagation saw test, avalanche forecasting
- View additional details about Validating the Propagation Saw Test on the Slope Scale
- Title: Field Study on Fracture Propagation in Weak Snowpack Layers
- Date: 2008-09-22
- Authors: Alec van Herwijnen, Joachim Heierli, Jürg Schweizer
- Description: Instabilities in snow slopes generally involve the progressive fracture along a weak snowpack layer. Recent field observations on fractures in weak la...
- Object ID: P__8213.pdf
- Keywords: snow avalanche, avalanche release, fracture mechanics, fracture propagation
- View additional details about Field Study on Fracture Propagation in Weak Snowpack Layers
- Title: Anticracks: A New Theory of Fracture Initiation and Fracture Propagation in Snow
- Date: 2008-09-22
- Authors: J. Heierli, A. van Herwijnen, P. Gumbsch, M. Zaiser
- Description: Shear failure models have traditionally dominated the research on slab avalanche initiation in snow science, but evidence has accumulated that they te...
- Object ID: P__8212.pdf
- Keywords: fracture, anticrack, packing order
- View additional details about Anticracks: A New Theory of Fracture Initiation and Fracture Propagation in Snow
- Title: Slab Fracture at 1900 Frames Per Second-Experimental Methods
- Date: 2008-09-22
- Authors: Chris Borstad, David McClung
- Description: We present high speed video images of slab fracture experiments. Slab bending tests were conducted in a cold laboratory at Rogers Pass in Glacier Nati...
- Object ID: P__8197.pdf
- Keywords: fracture mechanics, high speed photography
- View additional details about Slab Fracture at 1900 Frames Per Second-Experimental Methods
- Title: Extended Column Test Results During Surface Warming: Does Surface Warming Affect Fracture Propagation Potential?
- Date: 2008-09-22
- Authors: Ron Simenhois, Karl Birkeland
- Description: Dry slab avalanche stability typically increases over time in the absence of active loading from new snow or wind. However, field observations suggest...
- Object ID: P__8037.pdf
- Keywords: extended column test, pst, propagation saw test, fracture propagation
- View additional details about Extended Column Test Results During Surface Warming: Does Surface Warming Affect Fracture Propagation Potential?
- Title: Slope Scale Spatial Variability Across Time and Space: Comparison of Results from Continental and Maritime Climates
- Date: 2008-09-23
- Authors: Jordy Hendrikx, Karl Birkeland
- Description: Understanding the spatial variability of the snowpack is a crucial step to improve accuracy in field data collection and avalanche forecasting. While ...
- Object ID: P__8036.pdf
- Keywords: spatial variability, temporal variability, fracture initiation, fracture propagation
- View additional details about Slope Scale Spatial Variability Across Time and Space: Comparison of Results from Continental and Maritime Climates
- Title: Predicting the Fracture Character of Potential Weak Layers in Penetrometer Signals
- Date: 2008-09-23
- Authors: James Floyer, Bruce Jamieson
- Description: Digital penetrometers have been shown to provide reliable assessments of snow hardness with depth; however, extracting useful information from the sig...
- Object ID: P__8222.pdf
- Keywords: snow penetrometer, fracture character, snowpack stratigraphy, avalanche forecasting, snowpack properties, snow hardness
- View additional details about Predicting the Fracture Character of Potential Weak Layers in Penetrometer Signals
- Title: Comparing Fracture Propagation Tests and Relating Test Results to Snowpack Characteristics
- Date: 2008-09-26
- Authors: Cameron Ross, Bruce Jamieson
- Description: The Propagation Saw Test (PST) and the Extended Column Test (ECT) are two recently and independently developed field tests that indicate the propensit...
- Object ID: P__8177.pdf
- Keywords: fracture propagation, snowpack stability test, extended column test, propagation saw test, avalanche forecasting, snowpack properties
- View additional details about Comparing Fracture Propagation Tests and Relating Test Results to Snowpack Characteristics
- 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: The Effect of Changing Slab Thickness on Fracture Propagation
- Date: 2008-09-22
- Authors: Ron Simenhois, Karl Birkeland
- Description: Many avalanches are triggered from shallower parts of a slope. Past research demonstrates that initiating fractures in such areas is easier than in de...
- Object ID: P__8045.pdf
- Keywords: ect, extended column test, pst, propagation saw test, fracture propagation
- View additional details about The Effect of Changing Slab Thickness on Fracture Propagation
- 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
- Title: The Extended Column Test: A Field Test for Fracture Initiation and Propagation
- Date: 2006
- Authors: Ron Simenhois, Karl Birkeland
- Description: For dry slab avalanches, fractures initiate and propagate in a weak layer or along an
interface. Current field tests like compression or stuffblock t...
- Object ID: issw-2006-079-085.pdf
- Keywords: stability test, avalanche forecasting, stability assessment, fracture propagation
- View additional details about The Extended Column Test: A Field Test for Fracture Initiation and Propagation
- 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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