Your search for Keyword "extended column test"resulted in 20 records.
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- Title: STABILITY TEST CRAFTSMANSHIP: DOES IT MATTER?
- Date: 2023-10-08
- Authors: Andy Moderow, John Sykes
- Description: It can be difficult in a field setting to cut perfectly square and vertical columns for Extended Column Tests (ECT) and Compression Tests (CT). This s...
- Object ID: ISSW2023_O16.01.pdf
- Keywords: compression test, stability test, extended column test
- View additional details about STABILITY TEST CRAFTSMANSHIP: DOES IT MATTER?
- Title: Using a High-Resolution Particle Tracking Method to Analyze Extended Column Tests
- Date: 2018-10-07
- Authors: Arden Feldman, Ladean R. McKittrick, Edward E. Adams
- Description: The Extended Column Test (ECT) has become a very popular tool for assessing snowpack stability, yet its mechanics are still not well understood. Using...
- Object ID: ISSW2018_P10.3.pdf
- Keywords: collapse, shear, crack propagation, particle tracking, extended column test
- View additional details about Using a High-Resolution Particle Tracking Method to Analyze Extended Column Tests
- Title: The Role of Collapse in Avalanche Release: Review and Implications for Practitioners and Future Research
- Date: 2016-10-02
- Authors: Edward Bair, Johan Gaume, Alec van Herwijnen
- Description: Reports of collapses and whumpfing sounds and their links to instability in the snowpack have been around for decades, but like many areas of snow sci...
- Object ID: ISSW16_O1.04.pdf
- Keywords: fracture, collapse, anticrack, extended column test, propagation saw test
- View additional details about The Role of Collapse in Avalanche Release: Review and Implications for Practitioners and Future Research
- Title: Comparison of ECT, RB, Threshold Sum and Relative Threshold Sum Approach to To Snowpack Instability Evaluation - New Results
- Date: 2016-10-02
- Authors: Igor Chiambretti, Fabiano Monti, Mauro Valt
- Description: The Italian regional avalanche forecasting services (AINEVA) collect snowpack observations such as snowpack profiles or stability tests on a daily or ...
- Object ID: ISSW16_P3.05.pdf
- Keywords: rutschblock (rb), extended column test (ect), structural instability indices, threshold sum (tsa), relative threshold sum (rta)
- View additional details about Comparison of ECT, RB, Threshold Sum and Relative Threshold Sum Approach to To Snowpack Instability Evaluation - New Results
- Title: Extended Column Test: Repeatability and Comparison to Slope Stability and the Rutschblock
- Date: 2016-10-02
- Authors: Frank Techel, Matthias Walcher, Kurt Winkler
- Description: Information on snow stability is key information when assessing the avalanche situation. However, stability tests like the Extended Column Test (ECT) ...
- Object ID: ISSW16_P4.08.pdf
- Keywords: extended column test, rutschblock, test repeatability, snow stability, fracture propagation
- View additional details about Extended Column Test: Repeatability and Comparison to Slope Stability and the Rutschblock
- Title: Using Large Column Tests to Successfully Forecast Persistent Deep Slab Avalanches in the Central Sierra Nevada Mountains
- Date: 2016-10-02
- Authors: Brandon Schwartz, Andy Anderson
- Description: Forecasting of Persistent Deep Slab avalanches presents a unique and at times difficult problem for Backcountry Regional Forecasters, Guide Services, ...
- Object ID: ISSW16_P4.26.pdf
- Keywords: avalanche forecasting, persistent deep slab, propagation saw test (pst), extended column test (ect), sierra nevada
- View additional details about Using Large Column Tests to Successfully Forecast Persistent Deep Slab Avalanches in the Central Sierra Nevada Mountains
- Title: Changes in Extended Column Test Results with Varying Depths
- Date: 2016-10-02
- Authors: Ian Hoyer, Ethan Greene, Doug Chabot, Karl W. Birkeland
- Description: Knowing the Extended Column Test's (ECT's) effectiveness at different slab thicknesses is critically important for practitioners. To better understand...
- Object ID: ISSW16_P4.29.pdf
- Keywords: extended column test, snowpack test, propagation
- View additional details about Changes in Extended Column Test Results with Varying Depths
- Title: What Do Longer Tests Tell Us About Fracture and Stability?
- Date: 2014-09-29
- Authors: Edward H. Bair, Ron Simenhois, Alec van Herwijnen, Karl Birkeland
- Description: Extended Column Tests (ECT) and Propagation Saw Tests (PST) are used to assess crack propagation; that is, the likelihood of a crack self-propagating....
- Object ID: ISSW14_paper_O7.03.pdf
- Keywords: stability tests, extended column test, propagation saw test, fracture.
- View additional details about What Do Longer Tests Tell Us About Fracture and Stability?
- Title: Field Observations of the Effects of Explosives on Snow Density and Snow Stability Test Results
- Date: 2014-09-29
- Authors: Robyn E. Wooldridge, Jordy Hendrikx, Daniel A. Miller
- Description: Ski areas, highway departments and other avalanche programs around the world routinely use explosives to both initiate avalanches and to test snowpack...
- Object ID: ISSW14_paper_P1.30.pdf
- Keywords: stability tests, extended column test, compression test, propagation, explosives.
- View additional details about Field Observations of the Effects of Explosives on Snow Density and Snow Stability Test Results
- Title: Examining the Slope Scale Spatial Variability of Extended Column Test Results
- Date: 2014-09-29
- Authors: Ian Hoyer, Jordy Hendrikx, Karl W. Birkeland
- Description: Though a significant amount of research examines the spatial variability of snow stability at the slope scale, most of that work focuses on tests prim...
- Object ID: ISSW14_paper_P2.29.pdf
- Keywords: extended column test, spatial variability, stability evaluation, propagation.
- View additional details about Examining the Slope Scale Spatial Variability of Extended Column Test Results
- Title: Edge Effects In Propagation Tests
- Date: 2013-10-07
- Authors: Edward H. Bair, Ron Simenhois, Alec van Herwijnen, Karl Birkeland
- Description: Guidelines suggest beams with lengths around 1 m for Extended Column Tests (ECTs) and Propagation Saw Tests (PSTs). The longest unstable tests publish...
- Object ID: ISSW13_paper_O5-02.pdf
- Keywords: crack propagation, extended column test, propagation saw test
- View additional details about Edge Effects In Propagation Tests
- Title: Using High-Speed Video to Better Understand Extended Column Tests
- Date: 2012
- Authors: Karl W. Birkeland, Alec van Herwijnen
- Description: Extended Column Tests (ECTs) have become increasingly popular for assessing snowpack stability. However, we still do not fully understand what happen...
- Object ID: issw-2012-098-103.pdf
- Keywords: extended column test, propagation saw test, snowpack stability test,
- View additional details about Using High-Speed Video to Better Understand Extended Column Tests
- 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: The Effect of Additional Snow Load on Extended Column Test and Propagation Saw Test Results
- Date: 2010
- Authors: Ron Simenhois, Karl Birkeland
- Description: The number of skier triggered dry slab avalanches typically increases during or shortly after snow loading events. However, field observations and res...
- Object ID: ISSW_O-041.pdf
- Keywords: extended column test, propagation saw test, snow, dry slab
- View additional details about The Effect of Additional Snow Load on Extended Column Test and Propagation Saw Test Results
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