Your search for Subject weak layer fractureresulted in 115 records.
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- 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 Relationship Between Measured Snow Hardness and Shear Strength
- Date: 2010
- Authors: Peter Höller, Reinhard Fromm
- Description: Snow hardness is an important parameter in avalanche forecasting; however, hardness has not that relevance as the shear strength of snow. On the other...
- Object ID: ISSW_P-021.pdf
- Keywords: snow hardness, shear strength, push-pull gauge
- View additional details about The Relationship Between Measured Snow Hardness and Shear Strength
- 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: Faceted Melt Forms, a Deadly and Unpredictable Weak Layer
- Date: 2009
- Authors: Bill Glude
- Description: Faceted melt forms are a particularly persistent and difficult-to-predict weak layer we
have commonly found in Alaska and in the Japanese Alps. This ...
- Object ID: issw-2009-0092-0096.pdf
- Keywords: avalanche, case histories, persistent weak layer, facets, faceted melt forms
- View additional details about Faceted Melt Forms, a Deadly and Unpredictable Weak Layer
- Title: Measurements of Weak Snowpack Layer Friction
- Date: 2009
- Authors: Alec van Herwijnen, Joachim Heierli
- Description: An essential stage in the release of an avalanche is the propagation of a fracture through a weak snowpack layer. As the fracture propagates, the slab...
- Object ID: issw-2009-0112-0114.pdf
- Keywords: particle image velocimetry, friction, weak layers, avalanche formation
- View additional details about Measurements of Weak Snowpack Layer Friction
- Title: Could Retrieval of Snow Layer Formation by Optical Satellite Remote Sensing Help Avalanche Forecasting? Presentation of First Results.
- Date: 2009
- Authors: Rune Solberg, Regula Frauenfelder, Hans Koren, Kalle Kronholm
- Description: Of special interest within the field of avalanche research and avalanche warning are
properties related to snow grain type and snow grain size at the...
- Object ID: issw-2009-0207-0210.pdf
- Keywords: avalanche forecasting, remote sensing, snow grain size, snow temperature, snow wetness
- View additional details about Could Retrieval of Snow Layer Formation by Optical Satellite Remote Sensing Help Avalanche Forecasting? Presentation of First Results.
- Title: Fracture Line Profiles in Japan
- Date: 2009
- Authors: Shinji Ikeda
- Description: Numerous studies have been conducted on snow pack characteristics associated
with avalanches formation, mainly in North America and Europe. In recent...
- Object ID: issw-2009-0334-0335.pdf
- Keywords: snowpack stratigraphy, weak layer, structural weakness, snow climate, avalanche forecasting
- View additional details about Fracture Line Profiles in Japan
- 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: Validation of the Propagation Saw Test Near Whumpfs and Avalanches
- Date: 2008-09-22
- Authors: Dave Gauthier, Cameron Ross, Bruce Jamieson
- Description: The Propagation Saw Test (PST) is a recently developed field test method for evaluating the fracture propagation propensity of slab and weak layer com...
- Object ID: P__8216.pdf
- Keywords: propagation propensity, field test, instability assessment, snowpack properties, forecasting
- View additional details about Validation of the Propagation Saw Test Near Whumpfs and Avalanches
- 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: Avalanche Fracture Mechanics Results for Practitioners
- Date: 2008-09-22
- Authors: D.M. McClung
- Description: It is indisputable that dry slab avalanches are initiated by weak layer shear fractures. I formulated the first fracture mechanical model of dry slab ...
- Object ID: P__8180.pdf
- Keywords:
- View additional details about Avalanche Fracture Mechanics Results for Practitioners
- 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: On Snow Avalanche Flow Regimes: Inferences from Observations and Measurements
- Date: 2008-09-22
- Authors: Peter Gauer, Dieter Issler, Karstein Lied, Krister Kristensen, Frode Sandersen
- Description: Mixed dry-snow avalanches are commonly thought to consist of a dense core and a dilute suspension layer, even though observations and measurements fro...
- Object ID: P__8041.pdf
- Keywords: avalanche dynamics, flow regimes, observations, measurements
- View additional details about On Snow Avalanche Flow Regimes: Inferences from Observations and Measurements
- Title: Experimental Study of Short-Term Loading Influence on Snow Shear Strength
- Date: 2008-09-22
- Authors: Evgeny Podolskiy, Pavel Chernous, Osamu Abe, Nikolay Barashev, Kouichi Nishimura
- Description: It is well known that short-term loadings caused by earthquakes, explosions, skiers etc. can trigger avalanches. There are some models of similar infl...
- Object ID: P__8050.pdf
- Keywords: snow, seismicity, shear strength, avalanche
- View additional details about Experimental Study of Short-Term Loading Influence on Snow Shear Strength
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