Your search for Subject Snow Instabilityresulted in 708 records.
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- Title: Warm Storms Associated with Avalanche Hazard in the Sierra Nevada
- Date: 1998
- Authors: Randall Osterhuber, Richard Kattelmann
- Description: Rain-on-snow events occasionally produce avalanches of varying magnitude depending on both snowpack properties and storm characteristics. Under rain-o...
- Object ID: issw-1998-526-533.pdf
- Keywords: avalanche, avalanche frequency, rain-on-snow, snow stability, wet-snow avalanche
- View additional details about Warm Storms Associated with Avalanche Hazard in the Sierra Nevada
- Title: Sintering in a Dry Snow Cover
- Date: 1998
- Authors: S. C. Colbeck
- Description: Earlier theories of sintering in snow were based on an incorrect assumption about the geometry of the bond. The bond was assumed to have the reverse, ...
- Object ID: issw-1998-534.pdf
- Keywords: snow, snow crystal growth, snow metamorphism
- View additional details about Sintering in a Dry Snow Cover
- Title: Experiments and Numerical Simulation of Ping-Pong Ball Avalanches
- Date: 1998
- Authors: Y. Ito, K. Nishimura, Y. Nohguchi, J. McElwaine, S. Keller, K. Izumi
- Description: Snow avalanche experiments at a ski jump have been carried out since 1995. Instead of snow, we used up to 550,000 ping-pong balls to simulate three-di...
- Object ID: issw-1998-537-543.pdf
- Keywords: snow avalanche, ping-pong ball, ski jump, particle and air interaction
- View additional details about Experiments and Numerical Simulation of Ping-Pong Ball Avalanches
- Title: A New Swiss Test-Site for Avalanche Experiments in the Vallee de la Sionnei Valais
- Date: 1998
- Authors: Walter J. Ammann
- Description: A new Swiss test-site for avalanche experiments has been built to study the overall dynamic behaviour of dense-flow and powder-snow avalanches and to ...
- Object ID: issw-1998-551-558.pdf
- Keywords: avalanche deposits, avalanche mechanics, avalanche modelling, avalanche pressure, avalanche velocities, snow load on structures, impact forces
- View additional details about A New Swiss Test-Site for Avalanche Experiments in the Vallee de la Sionnei Valais
- Title: Effectively Using and Interpreting Stability Tests
- Date: 1998
- Authors: Ron Johnson, Karl Birkeland
- Description: Determining the likelihood of an avalanche occurring on a given slope is a critical decision faced by both avalanche professionals and backcountry ent...
- Object ID: issw-1998-562-565.pdf
- Keywords: snow stability, stability tests, avalanche forecasting, avalanches
- View additional details about Effectively Using and Interpreting Stability Tests
- Title: The Cantilever Beam or Bridgeblock Snow Strength Test
- Date: 1998
- Authors: Craig Sterbenz
- Description: Weak layers buried within the snowpack are chiefly responsible for slab avalanche formation. These weak layers tend to fail in shear when subjected to...
- Object ID: issw-1998-566-573.pdf
- Keywords: avalanche forecasting, avalanche formation, snow mechanics, snow hardness, snow strength
- View additional details about The Cantilever Beam or Bridgeblock Snow Strength Test
- Title: Tensile Strength and Strength Changes in New Snow Layers
- Date: 1998
- Authors: Arthur I. Mears
- Description: The tensile strength (rupture modulus) of new snow layers was measured at a 3,200m elevation Colorado site during February and March, 1998 to determin...
- Object ID: issw-1998-574-576.pdf
- Keywords: avalanches, snow mechanics, snow strength
- View additional details about Tensile Strength and Strength Changes in New Snow Layers
- Title: The Cyberspace Snow and Avalanche Center an Avalanche Information Center for the Future
- Date: 1996
- Authors: Jim Frankenfield
- Description: The Cyberspace Snow and Avalanche Center, or CSAC, is an internet based avalanche center which provides reports on current weather and snowpack condit...
- Object ID: issw-1996-027-028.pdf
- Keywords: forecasting, snowpack conditions, weather, media
- View additional details about The Cyberspace Snow and Avalanche Center an Avalanche Information Center for the Future
- Title: Near Surface Faceted Crystals: Conditions Necessary for Growth and Contribution to Avalanche Formation, Southwest Montana, U.S.A.
- Date: 1996
- Authors: Karl Birkeland, Ron Johnson, Scott Schmidt
- Description: In the winter of 1995-96 we investigated the formation of faceted crystals that develop in the upper levels of the snowpack. We used an array of six t...
- Object ID: issw-1996-075-080.pdf
- Keywords: avalanche, snow metamorphism, faceted crystals, temperature gradient
- View additional details about Near Surface Faceted Crystals: Conditions Necessary for Growth and Contribution to Avalanche Formation, Southwest Montana, U.S.A.
- Title: The Basic Ideas Behind Snow Metamorphism
- Date: 1996
- Authors: S. C. Colbeck
- Description: The basic concepts of thermodynamics and crystal growth that account for the metamorphism of snow are presented. First, the differences between wet an...
- Object ID: issw-1996-080b.pdf
- Keywords: snow metamorphism, temperature gradient, faceted ice crystals
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- Title: Observations on Buried Surface Hoar - Persistent Failure Planes for Slab Avalanches in British Columbia, Canada
- Date: 1996
- Authors: Robert E. Davis, Bruce Jamieson, Jill Hughes, Colin Johnston
- Description: To relate shear strength of buried surface hoar to metamorphic changes, prominent layers of surface hoar buried on 7 January 1995 and 28 December 1995...
- Object ID: issw-1996-081-085.pdf
- Keywords: surface hoar, avalanche, snow metamorphism, snow, strength, plane sections, microphotography
- View additional details about Observations on Buried Surface Hoar - Persistent Failure Planes for Slab Avalanches in British Columbia, Canada
- Title: Dry-Slab Density and Thickness During Major Storms
- Date: 1996
- Authors: Art Mears
- Description: Observations of forest destruction throughout various snow climates suggest that design avalanches (=100-year return periods) usually result from frac...
- Object ID: issw-1996-091-093.pdf
- Keywords: avalanche, design-avalanche, slab, densities, thickness
- View additional details about Dry-Slab Density and Thickness During Major Storms
- Title: The Stochastic Model of Snow Cover Stability on Mountain Slopes
- Date: 1996
- Authors: Pavel A. Chernouss, Yury V. Fedorenko
- Description: Three-dimensional deterministic model of thin elastic shell on a rigid underlying surface of arbitrary configuration is used as approach to a snow sla...
- Object ID: issw-1996-104-106.pdf
- Keywords: avalanche, stochastic model, snowpack stability
- View additional details about The Stochastic Model of Snow Cover Stability on Mountain Slopes
- Title: Creep and Failure of Alpine Snow: Measurements and Observations
- Date: 1996
- Authors: H. Conway, S. Breyfogle, J.B. Johnson, C. Wilbour
- Description: We investigated the creep behavior of alpine snow in an effort to help understand and predict the timing of avalanche release. Measurements of motion ...
- Object ID: issw-1996-107-112.pdf
- Keywords: rain-on-snow, creep, avalanches
- View additional details about Creep and Failure of Alpine Snow: Measurements and Observations
- Title: Effect of Snow Temperatures on Skier Triggering of Dry Slab Avalanches
- Date: 1996
- Authors: D.M. McClung, Jurg Schweizer
- Description: Field observations and experience show that snow temperatures can have a strong influence on dry snow slab instability. Experience shows that there ar...
- Object ID: issw-1996-113-117.pdf
- Keywords: dry snow, snow temperature, snow strength, slab avalanche, avalanche formation, skier triggering
- View additional details about Effect of Snow Temperatures on Skier Triggering of Dry Slab Avalanches
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