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FREQUENCY-MAGNITUDE OF ROCKFALL EVENTS FOR HAZARD ANALYSIS; A COMPARISON OF DATA FROM LIDAR SCANNING WITH TRADITIONAL METHODS OF REPORTING
Session: Landslides and Slope Stability II / Mouvements de terrain et stabilité des pentes II
Megan van Veen, Department of Geological Sciences and Geological Engineering - Queen's University (Canada)
D. Jean Hutchinson, Department of Geological Sciences and Geological Engineering, Queen's University (Canada)
Ryan Kromer, Department of Geological Sciences and Geological Engineering, Queen's University (Canada)
Dave Gauthier, BGC Engineering Inc. (Canada)
Matt Lato, BGC Engineering Inc. (Canada)
Tom Edwards, CN Rail (Canada)
Railways in Western Canada are exposed to rockfall hazards that can be understood and managed through the use of a rockfall database, which includes information on rockfall magnitude and frequency. Traditional rockfall inventories collected by railway personnel are often incomplete or lacking in volume information. In this study, LiDAR change detection is used to understand rockfall magnitudes, mechanisms, and source zones for an area of track along the Thompson River valley near Lytton, BC. Results are compared to traditional inventories to understand how each may contribute to establishing a complete rockfall inventory for this section of vulnerable railway track.
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