Item: AVALAUNCHER TARGETING FOR MOBILE GUN PROGRAMS
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Title: AVALAUNCHER TARGETING FOR MOBILE GUN PROGRAMS
Proceedings: International Snow Science Workshop 2024, Tromsø, Norway
Authors:
- Mark Vesely [ 6 Point Avalanche Control ]
Date: 2024-09-23
Abstract: The paper merges the theory of the avalauncher targeting model developed by DuVall and Jenkins (2008) and the practice of avalanche mitigation with a mobile avalauncher. For two seasons we used an avalauncher gun to aid control of several high frequency avalanche paths affecting two high mountain passes in the Omineca Mountains of British Columbia Canada. The program required control of several start zones requiring multiple firing positions. Short daylight hours and consistent extreme winds constrained our avalanche control options. An avalauncher gun was fixed into a truck bed and standard firing locations were established. The most important avalauncher risk is accuracy. Overshooting a ridgeline or missing a start zone creates issues confirming detonations and increases explosive costs. Selecting effective target parameters requires an expert's subjective perspective and objective measurements. Target acquiring initially included field-based measurements and subjective estimates for establishing firing values. To improve accuracy and reduce uncertainty we implemented the targeting model into a field operable spreadsheet that provided objective feedback and firing value options into the work routine. It was determined that both subjective and objective processes are important in working with the avalauncher in a mobile context. The developed work routine was observed to improve confidence, accuracy and safety margins. This experience reinforced the avalauncher as a viable option for avalanche control and offers strategies to reduce uncertainties for future users and projects.
Object ID: ISSW2024_P10.12.pdf
Language of Article: English
Presenter(s): Mark Vesely
Keywords: .
Page Number(s): 1405 - 1408
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