Variable hydrograph inputs for a numerical  debris-flow runout model

Mitchell, Andrew; Zubrycky, Sophia; McDougall, Scott; Aaron, Jordan; Jacquemart, Mylène; Hübl, Johannes; Kaitna, Roland; Graf, Christoph

doi:https://doi.org/10.5194/nhess-22-1627-2022

Articles | Volume 22, issue 5

https://doi.org/10.5194/nhess-22-1627-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/nhess-22-1627-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 5

Research article

|

17 May 2022

Research article |

| 17 May 2022

Variable hydrograph inputs for a numerical debris-flow runout model

Andrew Mitchell, Sophia Zubrycky, Scott McDougall, Jordan Aaron, Mylène Jacquemart, Johannes Hübl, Roland Kaitna, and Christoph Graf

Data sets

Geomorphic mapping and UAV lidar of debris flow fans in southwestern British Columbia, Canada S. Zubrycky, A. Mitchell, and S. McDougall https://doi.org/10.1594/PANGAEA.932864

Debris flow discharge hydrographs from Dorfbach & Spreitgraben, Switzerland, and Lattenbach, Austria A. Mitchell, M. Jacquemart, J. Hübl, R. Kaitna, and C. Graf https://doi.org/10.1594/PANGAEA.943970

Short summary

Debris flows are complex, surging movements of sediment and water. Discharge observations from well-studied debris-flow channels were used as inputs for a numerical modelling study of the downstream effects of chaotic inflows. The results show that downstream impacts are sensitive to inflow conditions. Inflow conditions for predictive modelling are highly uncertain, and our method provides a means to estimate the potential variability in future events.