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Your search for Subject Snow Instabilityresulted in 708 records.

Title: Snow Cover Evolution in Complex Alpine Terrain: Measurements and Modeling Including Snow Drift Effects
Date: 1998
Authors: Charles Fierz, Peter Gauer
Description: In mountainous areas, snowpack evolution, formation of weak snow layers as well as drifting and blowing snow are key factors in avalanche formation. ...
Object ID: issw-1998-284-289.pdf
Keywords: snow cover, snow cover structure, snow drifting, snow cover simulation
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Title: The Advanced Digital Snow Sonde
Date: 1998
Authors: Osamu Abe, Hiroo Sato, Mitsuharu Chiba, Shizuo Tanasawa
Description: The advanced digital snow sonde (DSS) having four sensors was designed and tested in this study. Using the DSS three kinds of snow profiles could be ...
Object ID: issw-1998-300-304.pdf
Keywords: snow gages, snow surveys, snow property
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Title: Measuring Snow Microstructure and Hardness Using a High Resolution Penetrometer
Date: 1998
Authors: Martin Schneebeli, Christine Pielmeier, Jerome B. Johnson
Description: Using a high resolution snow penetrometer we are able to measure snow penetration resistance and snow meso- and microstructure. We can show that the ...
Object ID: issw-1998-305-311.pdf
Keywords: snow hardness, metamorphism, snow strength, snow stratigraphy, texture
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Title: Forecasting Avalanches from Atmospheric Cross-Sections
Date: 1998
Authors: Nicholas Logan
Description: The weather fashions both weak and strong snow layers. The weather forecast and snowpack data are key ingredients to an accurate avalanche forecast. ...
Object ID: issw-1998-344-346.pdf
Keywords: snow drifting, snow precipitation, avalanche forecasting
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Title: Alternative Risk Management; Fat Man, Utile Boy and the Winch Roller
Date: 1998
Authors: Craig Sterbenz
Description: "Slope compaction and deep slab instability; alternative avalanche risk management: In recent years, ski area expansion into 'extreme' avalanche terr...
Object ID: issw-1998-348-351.pdf
Keywords: snow compaction, snow cover stability, avalanche counter measures, snow vehicles
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Title: Snow Stability Patterns in the Bridger Range, Montana
Date: 1998
Authors: Karl W. Birkeland
Description: Though avalanche workers and scientists recognize that distinct patterns of snow stability exist in mountainous terrain, no field-based research has b...
Object ID: issw-1998-362-367.pdf
Keywords: wind exposure, avalanche forecasters, snow stability
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Title: On-Site Interpretation - A Tool for Increasing Avalanche Awareness
Date: 1998
Authors: Roland V. Emetaz
Description: On-site interpretation is recognized as a useful tool for increasing people's awareness of environmental processes. Interpretation of the 1995 avalanc...
Object ID: issw-1998-381-386.pdf
Keywords: avalanche awareness, interpretation, avalanche interpretive writing, avalanche education
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Title: How Has a Hexagonal Snow Crystal Been Arranged on Science and Design?
Date: 1998
Authors: Kaoru. Izumi, Yasuaki Nohguchi
Description: When a hexagonal snow crystal is drawn or designed, the arrangement of it is divided broadly into two types; horizontal or vertical arrangement. The ...
Object ID: issw-1998-405-409.pdf
Keywords: snow crystal, arrangement, w a bentley, snow culture
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Title: Why Measure New Snow Density - Precipitation and Air Temperature?
Date: 1998
Authors: H. Conway, C. Wilbour
Description: The evolution of snow slope stability during storms is investigated using simple models to calculate the shear strength of a buried layer (from its de...
Object ID: issw-1998-466-473.pdf
Keywords: storm and avalanche cycles, snow slope stability
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Title: Snow Stability and Its Variation in Course of Time
Date: 1998
Authors: Peter Holler
Description: One of the most important questions in avalanche warning is snowpack stability. A main factor when elaborating avalanche bulletins is the settlement ...
Object ID: issw-1998-474-477.pdf
Keywords: avalanches, snow cover, snow stability
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Title: Slab Avalanches and New Snow
Date: 1998
Authors: Alain Duclos
Description: A three-year study based on observations carried out both on the field and inside the laboratory has enabled us to describe accurately 22 slab avalanc...
Object ID: issw-1998-478-488.pdf
Keywords: avalanche forecasting, snow cover stability, snow stratigraphy
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Title: Contribution on the Role of Deficit Zones or Imperfections in Dry Snow Slab Avalanche Release
Date: 1998
Authors: Jurg Schweizer
Description: Dry snow slab avalanche formation starts with failure in the weak layer underlying the slab. The stress has to locally exceed the strength that strong...
Object ID: issw-1998-489-501.pdf
Keywords: snow mechanics, avalanche mechanics, avalanche release
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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: Surface Warming of a Dry Snowpack Increases Skier-Induced Stress and Strain Magnitudes in Deeper Weak Layers
Date: 1998
Authors: A. Wilson, J. Schweizer, C.D. Johnston, J.B. Jamieson
Description: Changes in air temperature, and hence snow temperature, influence snow stability for skiers. This paper studies how warming in the top 20 cm of a hard...
Object ID: issw-1998-514-519.pdf
Keywords: snow stability, avalanche triggering, snow thermal effects
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Title: Snow Densification During Rain
Date: 1998
Authors: H.P. Marshall, H. Conway, L.A. Rasmussen
Description: Observations and measurements indicate rain often has a major impact on snow slope stability. Measurements to investigate the effects of wetting of l...
Object ID: issw-1998-520-525.pdf
Keywords: snow, snow compaction, rain on snow
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