Backcountry Avalanche Awareness

Backcountry Avalanche Awareness

by Bruce Jamieson


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Product Details

ISBN-13: 9780968585610
Publisher: Canadian Avalanche Association
Publication date: 11/28/2001
Pages: 78
Product dimensions: 6.30(w) x 9.20(h) x 0.20(d)

Table of Contents

Chapter 1Introduction1
Chapter 2Account of an Avalanche and Rescue3
Chapter 3Reducing the Risk--Key Points8
Before You Go8
On the Way to the Backcountry8
Some Signs to Watch for in the Backcountry8
Choosing Routes and Slopes8
Good Habits9
Chapter 4Avalanche Characteristics10
Types of Avalanches10
Avalanche Motion and Forces11
Chapter 5Avalanche Terrain13
Recognizing Avalanche Terrain13
Slope Angle of the Start Zone14
Orientation of Slope to Wind14
Orientation to Sun15
Size of Slope16
Shape of Slope16
Gullies and Bowls17
Terrain Roughness17
Islands of Safety18
Terrain Traps19
Route Selection19
Terrain Summary20
Chapter 6Mountain Snowpack23
The Strength of Storm Snow Layers23
The Strength of Old Snow Layers23
Surface Hoar24
Regional Differences in Snowpack25
Local Differences in Snowpack25
Effect of Recent Weather on Snow Stability26
Chapter 7Recognizing Avalanche Danger27
Avalanche Danger27
Making a Decision27
Snowpack and Previous Weather29
Avalanche Bulletins29
Field Observations29
Snowpack Tests32
Present Weather38
Assessing Snow Stability38
Terrain Alternatives39
Human Factors40
Danger Factors Often Neglected40
Decision-Making Scenario41
Decision-Making Scenario 242
Decision-Making Scenario 343
Chapter 8Winter Backcountry Travel44
Safety Equipment44
Safety Training44
Trip Preparation45
Group Safety46
Traveling in Avalanche Terrain46
Crossing a Potentially Unstable Slope47
Caught in an Avalanche!47
When the Avalanche Slows47
When the Avalanche Stops48
Drawn to the Pass49
Chapter 9Search and Rescue51
Once Buried, Time is Short51
Companion Rescue51
When you Enter the Slope52
Transceiver Search52
Fine Search Patterns for Transceivers53
Probe Search55
Going for Organized Help57
Organized Rescue57
A Few Runs with Friends58
Books, Videos and References59
Appendix AGlossary62
Appendix BSnow Metamorphism66
Appendix CAvalanche Danger Scales69
Appendix DClassifying the Size of Avalanches71
Appendix ESources for Current Avalanche Conditions72
Appendix FReporting Avalanche Incidents74
Appendix GIncident Response77
Appendix HEquipment Checklist for Day Trip78

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