Your search for Subject surface hoar layerresulted in 80 records.
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- 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: Aerodynamic and Surface Characteristic Length Scales of Snow Covered Flat Planes
- Date: 2009
- Authors: Christof Gromke, Michele Guala, Costantino Manes, Benjamin Walter, Michael Lehning
- Description: Velocity profiles over fresh fallen snow surfaces have been measured in the SLF cold
atmospheric boundary layer wind tunnel. Aerodynamic roughness le...
- Object ID: issw-2009-0136-0140.pdf
- Keywords: aerodynamic roughness length, digital image analysis, snow surface roughness, structure functions, surface characteristic length scales, turbulent boundary layer flow
- View additional details about Aerodynamic and Surface Characteristic Length Scales of Snow Covered Flat Planes
- 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: Associations Between Shear Strength of a Buried Surface Hoar Layer and Stratigraphic, Topographic and Vegetation Characteristics on a “Uniform†Slope
- Date: Unknown
- Authors: Eric Lutz, Karl W. Birkeland, Martin Schneebeli, Kathy J. Hansen, Kalle Kronholm
- Description: Extended Abstract. In this study we quantify 1) changes in spatial and aspatial characteristics of the shear strength of a buried surface hoar layer,...
- Object ID: issw-2006-027-028.pdf
- Keywords: shear strength, snow stratigraphy, snow microstructure, slope uniformity
- View additional details about Associations Between Shear Strength of a Buried Surface Hoar Layer and Stratigraphic, Topographic and Vegetation Characteristics on a “Uniform†Slope
- Title: An Observation of Depth Hoar in the Maritime
- Date: 2006
- Authors: S. Ikeda, M. Ryan
- Description: Generally speaking, in continental climates thick depth hoar layer may
develop near at or near the ground, where in maritime climates a compacted sno...
- Object ID: issw-2006-132-138.pdf
- Keywords: depth hoar, maritime climate, wind erosion, rainfall
- View additional details about An Observation of Depth Hoar in the Maritime
- Title: Skier Triggered Surface Hoar: A Discussion of Avalanche Involvements During the 2006 Valdez Chugach Helicopter Ski Season
- Date: 2006
- Authors: Sarah Carter, Peter Carter, Jeff Levison
- Description: April of the 2006 helicopter ski season in the Valdez Alaska Chugach Mountains is characterized by numerous skier triggered avalanches. Preliminary da...
- Object ID: issw-2006-860-867.pdf
- Keywords: buried surface hoar, skier triggered, chugach, helicopter ski
- View additional details about Skier Triggered Surface Hoar: A Discussion of Avalanche Involvements During the 2006 Valdez Chugach Helicopter Ski Season
- Title: Surface Hoar Growth from Valley Clouds
- Date: 2006
- Authors: Sam Colbeck, Bruce Jamieson
- Description: Avalanches release from buried surface hoar layers which form when stratus clouds extend across valleys on consecutive nights. Water vapor diffusion o...
- Object ID: issw-2006-001-006.pdf
- Keywords: surface hoar, stratus cloud, snowpack stratigraphy, snow slab avalanches
- View additional details about Surface Hoar Growth from Valley Clouds
- Title: Associations Between Shear Strength of a Buried Surface Hoar Layer and Stratigraphic, Topographic and Vegetation Characteristics on a “Uniform†Slope
- Date: 2006
- Authors: Eric Lutz, Karl W. Birkeland, Martin Schneebeli, Kathy J. Hansen, Kalle Kronholm
- Description: In this study we quantify 1) changes in spatial and aspatial characteristics of the
shear strength of a buried surface hoar layer, and 2) identify ch...
- Object ID: issw-2006-027-028.pdf
- Keywords: shear strength, snow stratigraphy, snow microstructure, slope uniformity
- View additional details about Associations Between Shear Strength of a Buried Surface Hoar Layer and Stratigraphic, Topographic and Vegetation Characteristics on a “Uniform†Slope
- Title: Shear Strength of Natural and Artificial Depth Hoar Layers
- Date: 2006
- Authors: Osamu Abe, Junrong Xu, Jian Liu, Hiroyuki Hirashima, Shigeto Mochizuki, Satoru Yamaguchi, Takeshi Sato, Atsushi Sato
- Description: Many data on shear strength and density of natural depth hoar layers were collected from Japan, west China and Alaska. Snow metamorphism experiments u...
- Object ID: issw-2006-007-014.pdf
- Keywords: shear strength, depth hoar, avalanche occurrence
- View additional details about Shear Strength of Natural and Artificial Depth Hoar Layers
- Title: The Microstructual Effects of Kinetic Growth Metamorphism in a Layered Snow Structure
- Date: 2006
- Authors: Ethan M. Greene, Martin Schneebeli, Kelly Elder
- Description: Faceted snow near a hard crust often poses a dangerous problem for avalanche forecasters. producing a persistent weakness where the avalanches are dif...
- Object ID: issw-2006-022-026.pdf
- Keywords: snow microstructure, kinetic growth metamorphism, facets near crusts
- View additional details about The Microstructual Effects of Kinetic Growth Metamorphism in a Layered Snow Structure
- Title: The Effect of Slab and Bed Surface Stiffness on the Skier-Induced Shear Stress in Weak Snowpack Layers
- Date: 2006
- Authors: Alan Jones, Bruce Jamieson, Jürg Schweizer
- Description: A finite element model was developed to simulate a snowpack with localized surface loading of a skier on a slab of varying stiffness overlaying a thin...
- Object ID: issw-2006-157-164.pdf
- Keywords: snow avalanche, avalanche formation, skier triggering, numerical modeling
- View additional details about The Effect of Slab and Bed Surface Stiffness on the Skier-Induced Shear Stress in Weak Snowpack Layers
- Title: Snowpack Basal Layer Facets in the Sierra Nevada
- Date: 2006
- Authors: Randall Osterhuber
- Description: Though California’s Sierra Nevada generally experiences deep snowpacks and modest midwinter air temperatures, faceted snow grains do form and p...
- Object ID: issw-2006-183-186.pdf
- Keywords: facets, depth hoar, wet slab avalanche
- View additional details about Snowpack Basal Layer Facets in the Sierra Nevada
- Title: Measuring Near-Surface Snow Temperature Changes Over Terrain
- Date: 2006
- Authors: Laura Bakermans, Bruce Jamieson
- Description: The energy balance at the snow surface results in substantial diurnal temperature
fluctuations within the top portion of the snowpack. These temperat...
- Object ID: issw-2006-377-386.pdf
- Keywords: daytime warming, near-surface temperature change, snow surface energy balance, radiation, seasonal snowcover
- View additional details about Measuring Near-Surface Snow Temperature Changes Over Terrain
- Title: Slope Scale Modeling of Snow Surface Temperature in Topographically Complex Terrain
- Date: 2006
- Authors: J.M. Staples, E.E. Adams, A. E. Slaughter, L.R. McKittrick
- Description: In mountainous terrain, landscape strongly influences the thermal state of snow. An energy balance model, Radtherm/RT, can be used to account for topo...
- Object ID: issw-2006-806-814.pdf
- Keywords: snow surface, temperature, topography, energy balance, modeling, radiation
- View additional details about Slope Scale Modeling of Snow Surface Temperature in Topographically Complex Terrain
- Title: A Comparison of the Spatial Structure of the Penetration Resistance of Snow Layers in Two Different Snow Climates
- Date: 2004
- Authors: Karl Birkeland, Kalle Kronholm, Spencer Logan
- Description: This paper compares the spatial structure of the compressive strength of slab
and weak layers from two different snow climates. Our data come from ar...
- Object ID: ISSW-2004-003.pdf
- Keywords: avalanches, avalanche forecasting, spatial variability, snow layers, stratigraphy
- View additional details about A Comparison of the Spatial Structure of the Penetration Resistance of Snow Layers in Two Different Snow Climates
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