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Your search for Subject surface hoar growthresulted in 72 records.

Title: Roughness Effect on Vapor Transfer for Surface Hoar Growth
Date: 2000
Authors: Akihiro Hachikubo
Description: In order to examine the roughness effect of surface hoar crystals on their growth and obtain a relation between surface roughness and the amount of su...
Object ID: issw-2000-128-134.pdf
Keywords: surface hoar, bulk transfer coefficient, surface roughness
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Title: Contrasting Stability Trends of Two Surface Hoar Layers in the Columbia Mountains, British Columbia, Canada
Date: 2000
Authors: Thomas S. Chalmers, Bruce Jamiesona
Description: Buried layers of surface hoar pose a challenge to avalanche forecasters in many areas. Some layers stabilize quickly and others remain unstable for a ...
Object ID: issw-2000-094-100.pdf
Keywords: surface hoar, snow stability, skier triggering, avalanches
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Title: Near-Surface Faceted Crystals and Avalanche Dynamics in High-Elevation, Tropical Mountains of Bolivia
Date: 2000
Authors: Douglas Hardy, Mark W. Williams, Carlos Escobar
Description: The importance of near-surface faceted crystals in forming weak layers associated with snow avanches has recently received greater attention. However,...
Object ID: issw-2000-109-114.pdf
Keywords: avalanches, avalanche formation, snow, snow stratigraphy, mountains
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Title: Snowpack Factors Associated With Strength Changes of Buried Surface Hoar Layers
Date: 1998
Authors: Bruce Jamieson, Colin Johnston
Description: Every winter in North America, failures in layers of buried surface hoar (frost) release many slab avalanches, some of which kill recreationists. Some...
Object ID: issw-1998-074-085.pdf
Keywords: snow strength, avalanches, avalanche forecasting, snow metamorphism, snow physical properties, snow temperature
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Title: Observations on Buried Surface Hoar in British Colombia, Canada: Section Analyses of Layer Evolution
Date: 1998
Authors: Robert E. Davis, Bruce Jamieson, Colin Johnston
Description: Observations on sections cut through buried surface hoar layers over time offer the opportunity to measure microstructural changes associated with str...
Object ID: issw-1998-086-092.pdf
Keywords: avalanche, snow metamorphism, snow strength, snow crystal, snow cover structure
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Title: A Model to Determine Snow Surface Properties from Remote Measurements
Date: 1998
Authors: Hansueli Gubler
Description: The formation of weak layers before they are buried by new snow is crucial for the determination of the actual danger level from measurements by auto...
Object ID: issw-1998-035-048.pdf
Keywords: snow cover stability, snow surface, snow metamorphism
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Title: Depth Hoar Growth Rates Near A Rocky Outcrop
Date: 1998
Authors: E.M. Arons, S.C. Colbeck, J.M.N.T. Gray
Description: Observations of slab avalanche releases in alpine terrain have led to the hypothesis that rocky outcrops can influence the spatial distributions of te...
Object ID: issw-1998-093.pdf
Keywords: snow crystal growth, snow metamorphism, snow crystal
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Title: Experiments of Depth Hoar Formation Under Extremely Low Temperature
Date: 1998
Authors: Y.Kamata, A.Sato
Description: To investigate the growth of depth hoar crystals in a very cold region, an experiment was carried out for three days with temperature gradients of 200...
Object ID: issw-1998-254-259.pdf
Keywords: depth hoar, extremely low temperature, saturated water vapor concentration
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Title: The Temporal Variations of Near-Surface Faceted Crystals, Red Mountain Pass Corridor, Colorado
Date: 1998
Authors: Joe Stock, Kelly Elder, Karl Birkeland
Description: Avalanches are an important natural hazard. Slab avalanches initiate when a more cohesive layer lies over a less cohesive weak layer and the stresses ...
Object ID: issw-1998-265-269.pdf
Keywords: snow crystals, snow metamorphism, snow stability, avalanches
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Title: Snowpack Temperature and Decreases in Tensile Strength
Date: 1998
Authors: R. S. Rosso, D. Howlett, S. Calhoun
Description: In an effort to understand post-control and other natural avalanches that occur shortly after rain begins or the sun's rays start to warm the starting...
Object ID: issw-1998-508-513.pdf
Keywords: rain-on-snow, snow temperature, snow strength
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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
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Title: Surface Hoar Growing for Several Days
Date: 1996
Authors: Akihiro Hachikubo, Eizi Akitaya
Description: Surface hoar growing for several clear and humid days were observed. In the daytime, the air and the snow surface temperature increased and the relati...
Object ID: issw-1996-086-090.pdf
Keywords: surface hoar, weak layer, radiative cooling
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Title: Experience with Stability Evaluation for a Surface Hoar Layer During Winter 1995-96 at Rogers Pass, British Columbia, Canada
Date: 1996
Authors: Jurg Schweizer, David Skjonsberg, Bruce McMahon
Description: The avalanche control section at Rogers Pass, British Columbia, Canada, is responsible for the avalanche safety within Glacier National Park. This inv...
Object ID: issw-1996-126-128.pdf
Keywords: snow crystals, snow strength, snow cover stability, avalanche forecasting, avalanche control
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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
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Title: Formation Rate of Surface Hoar Crystals Under Various Wind Velocities
Date: 1994
Authors: Akihiro Hachikubo, Takuya Fukuzawa, Eizi Akitaya
Description: Field observation of surface hoar crystals formation was carried out with measuring vapor condensation and meteorological elements: snow surface temp...
Object ID: issw-1994-132-137.pdf
Keywords: snow surface temperature, humidity, wind velocity, water vapor
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