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Sensitivity Analysis of UBCDFLOW and Debris Flow Travel Distance in Mountainous Forested Terrain around the Kootenay, British Columbia Region

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Title: Sensitivity Analysis of UBCDFLOW and Debris Flow Travel Distance in Mountainous Forested Terrain around the Kootenay, British Columbia Region
Author: Kurylo, John Bohdan
Issue Date: 2010-04-13
Citation: Kurylo, John Bohdan. 2010. Sensitivity Analysis of UBCDFLOW and Debris Flow Travel Distance in Mountainous Forested Terrain around the Kootenay, British Columbia Region. Undergraduate Honours Thesis. Department of Earth and Ocean Sciences. University of British Columbia. http://hdl.handle.net/2429/23467
Abstract: Two current approaches for the analysis of debris flows exist; semiempirical and empirical approaches. Fannin and Wise (2001) have proposed and developed an empirical–statistical model for predicting debris flow travel distance. This empiricalstatistical model is known as UBCDFLOW. Application of the UBCDFLOW model was completed for five sites within British Columbia. Forensically informed UBCDFLOW simulations, where the governing mode of flow in a reach was know beforehand, were compared against path informed simulations, where the benefits of knowing the mode of flow were not realized. It was observed that, due to the variances in entrainment and deposition widths, minor fluctuations in cumulative volume resulted. However, no significant variance in travel distance was observed. It was found that UBCDFLOW cumulative flow and travel distance was insensitive to variations in initial volume. Further, it was confirmed that the flow volumes generated by UBCDFLOW are moderately sensitive to a change in the event width while the predicted travel distance appears insensitive.
Affiliation: Earth and Ocean Sciences, Dept. of (EOS), Dept ofGeological Engineering, Dept of
URI: http://hdl.handle.net/2429/23467
Peer Review Status: Unreviewed

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